Plastics Steel Brochure

The Tool Steel Pros



Mold &Tool Steels

for Plastics

Crucible

The Tool Steel Pros



Application

Hardness

(HRC)

* Also see the CPM section on pages 6-7.

Crucible supplies a variety of stainless steels specifically
alloyed for injection mold and holder block applications
in the plastics industry. These steels offer several levels
of corrosion resistance for molding PVC and other
corrosive resins, and for resisting attack from moisture,
acids or caustic by-products of the molding process.
Stainless steels resist the effects of condensation during
production or prolonged storage.

Stainless mold and holder block steels are simple to
heat treat and offer a wide range of wear resistance and
toughness to meet your requirements. Crucible stainless
steels are machinable, can be polished to a fine finish, and
can be readily textured due to the uniformity throughout
each block.

Grades

Other

CSM 21 XL

32 - 35

0.02

15.25

—

4.80 3.50 Cu

CSM 420 XL

48 - 52

0.38

13.60

—

0.30 V

CPM S30V*

58 - 60

1.45

14.00

2.00

—

4.00 V

CPM S90V*

(XL)

54 - 58

2.25

14.00

1.00

—

9.00 V

Maxel 2000

35 - 39

.03

12.50

.30

2.75

0.16 S

Crucible, the CM logo, CSM, CPM, 3V, 9V, 10V, 15V, S30V, S90V, S125V,
REX, 121, CRU-WEAR, CRU-CLAD, and MAXEL, are all registered
trademarks of Crucible Materials Corporation, Syracuse, New York.

Stainless Steels

Tool Steels for the

Plastics Industry

The demands on the molds and wear parts used

to process plastics have risen dramatically.

The increased use of engineering resins and

glass fillers, coupled with more complex

designs and performance requirements have

led to extensive research and development of

the various tool steels and alloys used with

these plastics.
Crucible Service Centers has a full range of

steels for use in the plastics industry available

from our warehouse stock. Included along with

many conventional tool and mold steels are

highly wear resistant materials made using our

proprietary CPM process as well as stainless

steels for molds and holder blocks.
This brochure was developed to assist those

involved with the plastics industry to match

the most cost-effective steel alloys to their

specific plastic product requirements. More

technical information is available on request by

contacting your local Crucible Representative.

Contents

Stainless Steels.....................................................2
Mold Steels & Tool Steels .....................................4
CPM Tool Steels....................................................6
CRU-CLAD Components .......................................9
Mechanical Property Comparisons ......................10
Physical Property Comparisons...........................11
Crucible Service Centers......................................12

NOTES:

Applications mentioned in this brochure
are typical. Your specific application
should not be undertaken without
independent study and evaluation
for suitability.

Many of the values used in this brochure
are converted and approximate.

Relative Corrosion Resistance

of Stainless Steels

CSM 21 XL

Maxel 2000

CSM 420 XL

CPM S30V

CPM S90V

CPM S30V is a new, general purpose, heat treatable
stainless steel. With 4% vanadium, S30V is designed
to offer wear properties between 440C and S90V. S30V
offers the same corrosion resistance, but is easier to heat
treat, grind, and fabricate compared to S90V. It is an
excellent choice for larger diameter and longer length
injection and extrusion screws. It can also replace 420 XL
in molds and extrusion dies for higher hardness and high-
er wear resistance. S30V can also replace 440C for much
higher transverse toughness and better wear resistance.

CPM S30V is supplied annealed at approximately BHN
255. Its typical application hardness is HRC 58-60.

CPM S90V is a 9% vanadium heat treatable stainless steel
designed for highly abrasive wear applications requiring
good corrosion resistance. S90V is used as extrusion dies,
wet pelletizer knives, screws, screw segments, screw tips,
barrels, non-return valves, and mold and gate inserts.
Where optimal polishability is required, choose S90V XL.

CPM S90V is supplied annealed at about BHN 255.
Its typical application hardness is about HRC 54-58.

Maxel 2000 is a prehardened, free-machining stainless
steel mold base material. It can also be used for molds
in those applications where good corrosion resistance
is required but high polishability is not. It is specifically
alloyed to offer improved resistance to corrosion and
cracking compared to 420F type holder block.

Maxel 2000 offers optimum machinability in the
prehardened condition at about HRC 35-39.

CSM 21 XL is a high quality precipitation hardening
stainless steel with better corrosion resistance and higher
toughness than CSM 420 XL. It is remelted for the micro-
structural uniformity and microcleanliness levels that are
required for critical polishing. It is readily welded, making
mold repair and engineering changes relatively simple.

CSM 21 XL’s excellent corrosion resistance makes it the
the preferred mold material for use with PVC and the best
choice for use with fire-retardant engineering grade resins.
Molds of CSM 21 can go in and out of extended storage
with far less maintenance than most other stainless grades.

CSM 21 XL is stocked in two conditions: smaller sections
are supplied in the solution treated condition at approxi-
mately BHN 302. It may be used in this condition for
molding applications where the processing temperature
remains below 400F. For higher temperature applications
or for higher hardnesses (up to HRC 42-44), CSM 21 XL
may be age-hardened through a simple low-temperature
process (925-1100F). Larger sections are generally
stocked in the heat treated (H-1100) condition at about
HRC 32-35.

CPM



S90V



(

)

CPM



S30V



Maxel



2000

PREHARDENED

CSM



21 XL

PREHARDENED

CSM



420 XL

CSM 420 XL is the workhorse premium quality stainless
mold steel for applications requiring corrosion resistance.
Molds made from CSM 420 XL are resistant to the rust
and pitting from water cooling or condensation and can
go in and out of extended storage with little maintenance.
CSM 420 XL is remelted to improve the microcleanliness
and microstructural uniformity for optimal polishability.

CSM 420XL is supplied in the annealed condition at
approximately BHN 212. Its typical working hardness
is HRC 48-52.

Automotive lens mold made from CSM 21 XL.

(Photo courtesy of Prospect Mold, Akron, Ohio)

Mold Steels and
Tool Steels

plus 3.00% Ni, 1.10% Al, 2.00% Cu

plus 0.08% S

plus 1.15% W

Crucible offers many tool steels for the manufacture of
molds and components used in the plastics industry. These
various tool steels provide a wide range of properties
which permit them to directly address the requirements
of each specific plastics processing application.

For highest wear resistance, consider the use of Crucible
CPM Wear Resistant Tool Steels which offer characteristics
far surpassing those available with conventional grades.
See pages 6-7.

Nu-Die V (AISI H13) is a hot work, air hardenable tool
steel that has been successfully used for many applications
in the plastics industry. It has excellent toughness and
good hardness and is widely used for plastic extrusion
dies, ejector pins, nozzles and cores.

Nu-Die XL (Premium AISI H13) is a refined version of
Nu-Die V often used to replace P20 molds where longer
runs are required or where abrasive fillers are used. Nu-Die
XL is remelted to improve the microcleanliness and
microstructural uniformity, making it an excellent choice
for molds requiring critical polishability.

Nu-Die V and Nu-Die XL are supplied in the annealed
condition at about BHN 217. Their typical application
hardness is about HRC 44-52.

PREHARDENED

HEAT TREATABLE

Grades

AISI

CSM #2 Plus

P20

0.30

1.70

0.40

—

0.75

0.50

HiStar 40

—

0.15

1.20

—

0.60

0.85

0.30

Holder Block

4150S

0.50

0.65

—

0.18

1.25

0.25

Nu-Die V/XL

H13

0.40

5.20

0.95

1.30

0.35

1.00

S7/ S7 XL

0.55

3.25

0.25

1.40

0.70

0.35

Crucible 161

—

0.50

5.00

1.10

1.60

0.40

1.00

Airkool

1.00

5.25

0.25

1.10

0.85

0.35

Airdi 150

1.55

11.50

0.80

0.90

0.35

0.45

CRU-WEAR

—

1.10

7.50

2.40

1.60

0.35

1.10

CSM #2 Plus (AISI P20) is a free-machining mold steel
for the production of general purpose plastic molds and
extrusion dies. Our special melting and carefully
controlled processing ensures a uniform composition
and microstructure resulting in superior machinability,
polishability and photo-etching characteristics.

Crucible ís CSM #2 Plus is 100% ultrasonic tested and
warranted. It is available in rounds, flats, and blocks,
as well as custom forgings up to 60,000 pounds. It is
normally supplied heat treated to HRC 30-32. If better
wear resistance or higher compressive strength is required,
choose the High Hard version of CSM #2 Plus at HRC 35-38.

HiStar 40 is a pre-hardened mold steel which is ideal
for plastic or rubber molds. It requires no additional heat
treatment and it is easy to machine, polish, texture, and
weld. Because it is precipitation hardened, rather than
quenched and tempered, it exhibits full, uniform hardness
through thick and thin sections. This is especially impor-
tant in deep cavity molds where P20 and other heat
treated grades are typically softer away from the surface.
Because of its high as-supplied hardness, HiStar 40 is
also recommended for such applications as hot runner
manifolds and blow molds.

HiStar 40 is supplied prehardened to HRC 37-41.

Crucible Holder Block (AISI 4150S Modified) is a free-
machining steel produced specifically for holders, shoes,
and mold bases which support injection or compression
molds. Special chemistry and controlled processing of
Crucible Holder Block provides excellent machinability.

Crucible Holder Block is normally supplied prehardened to
about HRC 28-32. It is available in blocks up to 60,000
pounds.

CSM



2 Plus

PREHARDENED

Crucible

Holder Block

HiStar 40



PREHARDENED

Nu-Die V



/ XL

PREHARDENED

S7 (AISI S7) is a shock resistant tool steel having an
excellent combination of toughness and attainable
hardness. In small sections the grade can be quenched
in air which assures minimal distortion. It is well suited
for small to medium molds that require higher compression
resistance while retaining a fair degree of toughness.

S7 XL is remelted, resulting in a cleaner, more uniform
microstructure offering better consistency in wire EDM
cutting, higher polishability, more uniform texturing,
and higher impact toughness across the grain.

Crucible S7 and S7 XL are available in the annealed
condition at a hardness of about BHN 207. These grades
may be heat treated to a typical working hardness of
HRC 55-57.

S7 XL is ideal for molding small, intricate plastic
products such as caps and closures.

(Photo courtesy of Wheaton Plastics, May’s Landing, New Jersey)

Crucible 161 is a special air hardening tool steel for
hot work or cold work applications. Having the basic
chemistry of AISI H13 with the exception of slightly
higher carbon, Crucible 161 possesses the air hardening
characteristics, and good dimensional control of H13,
while offering slightly higher hardness levels. This
makes Crucible 161 a good choice for plastic molds
and machinery parts requiring peening resistance and
wear resistance greater than H13.

Crucible 161 is supplied annealed at about BHN 220. Its
typical application hardness is about HRC 52-56.

Airkool (AISI A2) and Airdi 150 (AISI D2) are
conventional air hardening tool steels heat treatable to
HRC 60-62. They have good abrasion resistance which
makes them suitable for inserts and parts used in
processing abrasive plastics.

Airkool and Airdi 150 are supplied in the annealed
condition at BHN 235. Their typical application hardness
is about HRC 60.

CRU-WEAR is an air hardening tool steel heat treatable
to HRC 60-64 with better wear resistance and greater
toughness than AISI D2. CRU-WEAR is readily machined
in the annealed condition and, like other air hardening
tool steels, exhibits minimal distortion in hardening. Its
tempering temperature range is higher than that of AISI
D2, and therefore more compatible with a wide variety
of subsequent coating/nitriding operations. It is an
excellent choice for pins, cores, screws, and non-return
valves.

CRU-WEAR is supplied in the annealed condition at BHN
235. Its typical application hardness is about HRC 60-64.

(

)

Crucible 161

CRU-WEAR



Airkool



and

Airdi



150

Grades

58 - 60

0.80

7.50

2.75

1.30

—

52 - 56

1.78

5.25

9.00

1.30

—

14.5

10V

60 - 62

2.45

5.25

9.75

1.30

—

17.5

15V

58 - 60

3.40

5.25 14.50 1.30

—

S30V

58 - 60

1.45 14.00 4.00

2.00

—

14.5

S90V(XL)

54 - 58

2.25 14.00 9.00

1.00

—

The CPM process involves the production of fine steel
particles by gas atomization of a prealloyed melt. In the
atomizer, molten steel is poured through a nozzle where
high pressure gas disperses the liquid stream into
a fine spray of spherical droplets. These liquid droplets
rapidly solidify into tiny individual powder particles
which are spherical in shape and uniform in chemical
composition. The atomized powder is collected and loaded
into steel cans which are then evacuated and welded shut.
Subsequent exposure to sufficient temperature and
pressure consolidates the powder to 100% density.
The fully dense compacts then undergo normal mill
processing to finished bar.

The CPM process results in a homogeneous microstructure
with a finer, more uniform carbide distribution imparting
superior dimensional stability, grindability, and toughness
(especially transverse toughness) when compared to
conventional steels. The high tempering temperatures
typical of the CPM grades make them suitable for all types
of surface treatments and coatings. The CPM process also
allows the design of more highly alloyed grades which
cannot be produced by conventional steelmaking.

These high magnification photomicrographs compare
the carbide distribution in CPM 10V with that of D2
manufactured by conventional ingot metallurgy.

Crucible CPM



Tool Steels

CRUCIBLE CPM 10V

Atomization

Powder

Compact

AISI D2

CARBIDE

VOLUME

APPLICATION

HARDNESS

(HRC)

CPM Wear Resistant Killer V’s

Gas atomization produces spherical powder particles.
The powder is vacuum-sealed in steel containers and
consolidated to 100% density.

CPM (Crucible Particle Metallurgy) high performance alloys
are produced by a powder metallurgy process. Crucible has
developed a family of CPM high vanadium “Killer V” tool
steels for wear resistance: CPM 3V, 9V, 10V, 15V and the
stainless grades CPM S30V and S90V. These steels are
used in a variety of plastics tooling applications such as:
feed screws, barrel liners, non-return valves, pelletizer/
granulator blades, nozzles, trim dies, molds, and mold
inserts and gates. CPM high speed steels are also finding
use in selected plastics applications because of their
superior wear resistance and heat resistance.

In non-return valve assemblies, the screw tip and check ring
are typically made from CPM high performance alloys.

(Photo courtesy of Component Manufacture & Design, Brunswick, Ohio)

CPM 15V contains 15% vanadium and provides higher
wear resistance and longer tool life than CPM 10V. It may
be considered as the optimal candidate for barrel liners in
metal or ceramic injection molding applications.

CPM 15V is available in the annealed condition at BHN
262. Its typical application hardness is HRC 60-62.

CPM S30V is supplied annealed at approximately BHN
255. Its typical application hardness is HRC 58-60.

CPM S90V is supplied annealed at about BHN 255.
Its typical application hardness is about HRC 54-58.

CPM 3V is ideal for applications requiring the high impact
toughness of a shock resistant tool steel and the wear
properties of a high alloy tool steel. Its 3% vanadium
provides wear resistance greater than D2 and similar to
M2. Its impact toughness approaches that of S7 and is
far higher than any tool steel with this level of wear
resistance. CPM 3V is well suited for many plasticizing
components such as non-return valves, and screws.

CPM 3V is available in the annealed condition at BHN
229. Its typical application hardness is HRC 58-60.

CPM 9V contains 9% vanadium and offers high
toughness and excellent wear resistance. It’s tougher than
A2 with wear resistance approaching that of CPM 10V.

CPM 9V should be considered as an alternative to CPM
10V where toughness is a major consideration. It is a
good choice for feed screws and granulator blades. The
combination of 9V feed screws and 10V barrel liners has
become widely recognized as the industry standard.

CPM 9V is supplied in the annealed condition at BHN 241.
Its typical application hardness is HRC 52-56.

CPM 10V, introduced in 1978, has become widely
recognized as the standard high performance tool steel
for demanding wear applications. With its 10% vanadium,
CPM 10V provides higher wear resistance than D2 and
M4. It is used for barrel liners, non-return valve
components, mold inserts and pelletizer blades used
to process abrasive plastics.

CPM 10V is supplied in the annealed condition at BHN
255. Its typical application hardness is HRC 60-62.

CPM



CPM



10V



CPM



15V



CPM



CPM



S30V



CPM



S90V



(

)

Plasticizing components made from Crucible CPM tool steels.

(Photo courtesy of Zeiger Industries, Canton, Ohio)

CPM Rex MPL-1 is a 9% vanadium high carbon tool
steel with wear resistance superior to that of CPM 10V.
It also contains 24% Cr and 3% Mo for excellent corrosion
resistance. Its high annealed hardness makes it most
practical in CRU-CLAD applications which require minimal
machining after fabrication. Originally designed to line
mud pumps for the oil industry, it has been used in the
plastics industry to line bimetallic twin screw barrels, or to
clad bimetallic twin screw segments, especially in highly
abrasive, filled plastics applications where corrosion plays
a significant role.

CPM MPL-1 is supplied in the annealed condition at HRC
44-46. It’s typical application hardness is about HRC 62.

CPM S125V is a high performance upgrade to CPM S90V.

With 12% vanadium, it has superior wear resistance while

maintaining similar corrosion resistance. S125V has the

highest attainable hardness of any CPM stainless steel. It

is available only as CRU-CLAD.

CPM S125V is supplied in the annealed condition at BHN
280. Its typical application hardness is HRC 62-64.

CPM Rex 121 is a super high speed steel which offers
good frictional heat resistance and the highest wear
resistance and hardness available in any tool steel.
It is a cost-effective replacement for carbide-faced
plasticizing components such as twin screw extruder
barrels and screw segments.

CPM Rex 121 is supplied in the annealed condition at
BHN 360. Its typical application hardness is HRC 68.

Grades

MPL-1

62 - 64

3.75 24.00 9.00

3.00

—

S125V

62 - 64

3.25

14.0 12.00

2.5

—

Rex 121

67 - 69

3.40

4.00

9.50

5.00 10.00 9.00

Grades

Rex M4

58 - 64

1.42

4.00

5.25 5.50

—

12.5

Rex 20

66 - 68

1.35

3.75

2.00

10.5 6.25

—

High speed steels provide excellent red hardness for
resistance to frictional heating along with high wear
resistance.

CPM M4 (AISI M4) is a 4% vanadium high speed steel
with a good combination of toughness and wear resis-
tance, as well as good frictional heat resistance. It is the
best choice for wear applications over HRC 60. It is also
easier to machine than CPM 9V/10V. CPM M4 is used for
non-return valves, screws, barrels, and pelletizer knives.

CPM M4 is supplied in the annealed condition at BHN
255. Its typical application hardness is HRC 60-62.

CPM Rex 20 (AISI M62) is a cobalt-free high speed steel
containing vanadium, molybdenum and tungsten, that
has the red-hardness characteristics of the 8% cobalt
grades. Its 2% vanadium and its high carbide volume
fraction provide greater wear resistance than M42, while
offering frictional heat resistance comparable to M42, but
without the cobalt. CPM Rex 20 is used for segmented
screws, barrels, and non-return valve components.

CPM Rex 20 is supplied in the annealed condition at BHN
277. Its typical application hardness is HRC 68.

CPM



Rex



CPM



Rex 20



CPM



Rex 121



CARBIDE

VOLUME

APPLICATION

HARDNESS

(HRC)

CPM High Speed Tool Steels

CARBIDE

VOLUME

APPLICATION

HARDNESS

(HRC)

CRU-CLAD



CPM Specialty Tool Steels

CPM



S125V



CPM



MPL-1



CRU-CLAD



Components

Some of the most unique CPM products for the plastics industry
are CRU-CLAD, Crucible’s bi-metallic HIP clad components. These
are made at Crucible Compaction Metals by a proprietary process
involving Hot Isostatic Pressing (HIP). The CRU-CLAD process
economically produces perfectly bonded bi-metallic components
with longer lives and improved productivity.

CRU-CLAD bi-metallic twin screw segments are used in high
torque applications where wear resistant flights and lands are
required but a relatively soft, ductile core is desired. To produce a
CRU-CLAD screw blank, CPM is HIP clad to the OD of a low alloy
or carbon steel bar. This results in a bi-metallic blank with an outer
shell of CPM alloy which is metallurgically bonded to the bar.
This blank can then be machined to produce screw segments with
working surfaces of wear resistant CPM and a ductile, low alloy core.

Similarly, for

CRU-CLAD bi-metallic twin

barrels, the ID bores of low to medium alloy
steel blocks or bars are HIP clad with highly
wear resistant or wear/corrosion resistant
CPM alloys for a long-lasting solution to a
demanding application. Twin screw extruder
barrels are typically HIP clad with CPM 10V
or 15V, CPM M4, MPL-1 or our newest
CPM alloys, S125V and Rex 121. CRU-CLAD
barrels can also be produced with Alloy 6 or
Alloy 12 cobalt base grades or the newer
nickel base alloys with varying percentages
of tungsten carbide (WC). Other alloys are
available and may be appropriate depending
on the specific application.

Recommendations
for High Performance
Components

Nu-Die V (H13)
S1, S5
Maxel 3-1/2 (4140/50)
17-4 PH

Nozzle Tip

Nozzle Body

Nu-Die V (H13)
S1, S5
Maxel 3-1/2 (4140/50)
17-4 PH

End Cap

Maxel 3-1/2 (4140/50)
Nu-Die V (H13)
17-4 PH
Nitriding 135

Screw Tip

CPM S30V
CPM 9V
CPM 3V
CPM S90V
CPM M4
CRU-WEAR
Nu-Die V (H13)

Barrel

CPM 10V
CPM 15V
CRU-CLAD
CPM S90V
CPM M4

Check Ring

CPM S90V
CPM S30V
CPM Rex 20
CPM 10V
CPM M4
CPM 9V
CPM 3V
CRU-WEAR
Airdi 150 (D2)

Rear Seat

CPM S30V
CPM 3V
Airdi 150 (D2)
Nu-Die V (H13)

Feed Screw

CPM S30V
CPM 9V
CPM S90V
CPM 3V
CRU-WEAR
17-4 PH
Nitriding 135

CRU-CLAD Twin Barrel Blanks –
ID is HIP clad with CPM

CRU-CLAD Twin Screw Blanks –
OD is HIP clad with CPM

Mechanical

Property

Comparisons

The properties of tool

steels for the plastics

industry must be

compared in two

separate groupings:

those grades that are

considered highly

wear resistant and

those that are tougher

but not as wear

resistant.

In general, the

development of the

properties needed for

wear resistance cause

a decrease in other

properties such as

the toughness of the

material, its machin-

ability, and its work-

ability. Many of the

Wear Resistant Tool

Steels are used in

relatively small

sections, whereas

conventional Mold

and Tool Steels are

available in large

section sizes.

Mold Steels and Tool Steels

The conventional mold steels and tool steels are characterized by having generally lower alloy
content. This permits relatively high toughness levels at the sacrifice of wear resistance. The
wear resistance of these materials may be improved by surface treatments including chromium
plating, nickel plating, and nitriding. In general, the wear resistance is not improved to the
same levels as seen for the materials classed in the Wear Resistant Tool Steels category.

Airkool

Airdi 150

CRU-WEAR

CPM CPM

CPM

(A2)

(D2)

Rex 20

Rex M4

10V

15V

Rex 121

S30V

S90V

HRC 60 HRC 60 HRC 60 HRC 60 HRC 68 HRC 62 HRC 54 HRC 60 HRC 60 HRC 68 HRC 60 HRC 56

Wear Resistant Tool Steels

Wear Resistance is achieved by a combination of hardness and chemistry. The chemistry causes
the steels to have carbides of various compositions. One of the hardest carbides is the VC type
found in the high vanadium CPM Wear Resistant Tool Steels. Unlike other high alloy tool steels,
the CPM Wear Resistant Tool Steels retain outstanding toughness while providing high wear
resistance.

CSM 2

Holder

NuDieV/XL

S7/XL

HiStar 40 Crucible

Airkool

CSM 21XL

Maxel

CSM 21XL

CSM

(P20)

Block

(H13)

161

(A2)

(Cond. A)

2000

(H 950)

420 XL

HRC 32

HRC 30

HRC 47

HRC 56

HRC 40

HRC 52

HRC 60

HRC 32

HRC 37

HRC 42

HRC 50

Stainless

Steels

Relative Values

Stainless

Steels

In examining these graphs,
please note that there is a
very large difference in the
scales between those
grades classified as Wear
Resistant Tool Steels, and
those classified as Mold
Steels and Tool Steels.
To provide a reference
basis, AISI A2 has been
included on both graphs
and shown in a box.

Toughness

Wear Resistance

Toughness

Wear Resistance

Crucible CPM High Speed Tool Steels

Alloy

Thermal

Coefficient of

Size Change w/

Conductivity*

Thermal Expansion**

Heat Treat ***

CPM Rex M4

13.6

6.4

+0.0020

CPM Rex 20

14.2

7.0

+0.0022

* Approximate Thermal Conductivity at 200°F in BTU/hr-ft -°F
**Approximate Coefficient of Thermal Expansion between 70°F and 600°F in (inch/inch x 10

)

***Approximate Length Size Change when heat treated to normal working hardness in (inch/inch)

Physical

Property

Comparisons

Physical properties of

tooling materials used

in the plastics industry

are of importance since

they relate to the way

in which tool sections

interact and how the

tools may remove heat

from the molded part.

Care should be exercised

in using these numbers

since other factors

can affect true mold

performance. A prime

example of this is the

effect of corrosion build

up in non-stainless

molds. While the Thermal

Conductivity numbers

suggest that stainless

material would inhibit

a tool’s productivity, the

field experience suggests

that corrosive build up

in the cooling water lines

of non-stainless tools

have a more deleterious

effect than the low

thermal conductivity

of stainless tools. For

more information on

the physical properties

of these materials and

how they relate to your

application, contact

your local Crucible

Representative.

Crucible CPM Wear Resistant Tool Steels

Alloy

Thermal

Coefficient of

Size Change w/

Conductivity*

Thermal Expansion**

Heat Treat ***

CPM 3V

14.0

6.0

+0.0010

CPM 9V

12.4

6.2

+0.0004

CPM 10V

12.4

6.2

+0.0004

CPM 15V

12.2

6.2

+0.0004

CPM S30V

11.2

6.2

+0.0003

CPM S90V

(

)

9.7

6.4

+0.0003

Stainless Steels

Alloy

Thermal

Coefficient of

Size Change w/

Conductivity*

Thermal Expansion**

Heat Treat ***

CSM 21 XL

10.0

6.2

-0.0005

CSM 420 XL

14.4

6.0

+0.0004

CPM S30V

11.2

6.2

+0.0003

CPM S90V

(

)

9.7

6.4

+0.0003

Maxel 2000

15.0

6.1

N.A.

Mold Steels and Tool Steels

Alloy

Thermal

Coefficient of

Size Change w/

Conductivity*

Thermal Expansion**

Heat Treat ***

CSM #2 Plus

24.0

7.0

N.A.

HiStar 40

19.0

7.0

N.A.

Nu-Die V/XL

15.0

6.7

+0.0006

S7/XL

16.5

7.2

+0.0001

Crucible 161

14.5

6.7

+0.0006

Airkool

15.0

7.2

+0.0007

Airdi 150

12.1

6.6

+0.0001

CRU-WEAR

13.6

6.2

+0.0015

Holder Block

23.0

7.0

N.A.

United States

Phone

Toll Free

FAX

Auburn, MA

508-832-5353

800-365-1101

508-832-2217

Charlotte, NC

704-372-3073

800-365-1160

704-342-0985

Chicago, IL

630-378-0093

800-365-1151

630-378-1965

Cincinnati, OH

513-771-1310

800-365-1163

513-771-0119

Cleveland, OH

330-562-3131

800-365-1132

330-562-7818

Columbus, OH

614-771-1333

800-365-1131

614-771-7918

Dallas, TX

817-649-2800

800-365-1168

817-633-8142

Detroit, MI

248-528-0332

800-365-1133

248-528-1977

Grand Rapids, MI

616-554-9699

800-365-1137

616-554-9328

Huntsville, AL

256-772-0201

800-365-1161

256-772-3361

Indianapolis, IN

317-638-4501

800-365-1146

317-634-7375

Long Island, NY

631-232-9810

800-232-3404

631-232-9403

Los Angeles, CA

323-775-7344

800-365-1179

310-830-9784

Meadville, PA

814-337-8804

800-365-0530

814-337-8808

Milwaukee, WI

262-781-6710

800-242-0948

262-781-6743

Minneapolis, MN

612-331-6320

800-365-1153

612-331-4137

Nashville, TN

615-227-7999

800-365-1162

615-227-6466

Rochester, NY

716-254-4320

800-365-1128

716-254-4616

St. Louis, MO

636-272-7220

877-201-4049

636-978-9559

Canada

Montreal, QUE

450-443-8060

800-363-8756

450-443-8712

Toronto, ONT

905-793-1600

800-263-2367

905-793-1660

Wallaceburg, ONT

519-627-2245

800-265-5293

519-627-2247

Mexico

Monterrey, N.L.

(52) 81 8351-7220

(52) 81 8351-2981

Naucalpan, E de M (52) 55 5576-4011

(52) 55 5360-1865

CRUCIBLE SERVICE CENTERS

DIVISIONAL HEADQUARTERS:

Camillus,

315-487-0800 800-365-1185 315-487-4028

www.crucibleservice.com email: crucible@crucibleservice.com

For a list of our worldwide partners, please visit our website:

www.crucibleservice.com

The Tool Steel Pros



ADVS 339 5M-0802



2002 Crucible Materials Corporation Printed in U.S.A.

Crucible Service Centers

Crucible
Service Centers

A Division of Crucible Materials Corporation

(Photo courtesy of RW Machine & Tool, Ravenna, Ohio)

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