USA 800.323.1233 CANADA 800.268.4977 HEAT TREATMENT 800.265.0862
www.schmolz-bickenbach.us www.schmolz-bickenbach.ca
THYROTHERM
®
2367 SUPRA ESR
Technical Data Sheet
Chemistry
Typical
C
Si
S
Cr
Mo
V
Analysis % 0.37 0.40 .003 max. 5.0 3.0 0.60
Description
• THYROTHERM® 2367 SUPRA is an electro slag remelted
(ESR) hot work die steel developed for applications where
high temperature properties (tensile strength & thermal con-
ductivity) are required to resist thermal fatigue and temper-
ing.
Characteristics
• Excellent resistance to heat checking
•
Excellent resistance to wear (erosion & abrasion)
•
Excellent high-temperature strength
•
Good tempering resistance
•
Good toughness
Applications
•
High pressure die casting dies
•
Hot forging dies
•
Hot extrusion tooling
•
Forming dies
•
Plastic molds
•
Mandrels
Physical Properties
(Hardened and tempered to 46 HRC)
Mechanical Properties
Density:
0.281 lbs/in
3
(room temperature)
Toughness (CVN): Average 10 ft-lbs. at 44-46 HRC
Tensile Properties: (room temperature)
Hard-
ness
HRC
Y.S
(0.2%)
ksi
T.S.
Ksi
EL
(%)
RA
(%)
52
48
44
225
193
171
267
234
203
12
13
12
35
38
40
Coefficient of
Thermal
Expansion
70
0
F – 200
0
F
6.6
X 10
-6
/
0
F
70
0
F – 400
0
F
6.9
X 10
-6
/
0
F
70
0
F – 750
0
F
7.0 X 10
-6
/
0
F
Thermal
Conductivity
70
0
F
206
Btu/in/ft
2
/
hr/
0
F
650
0
F
235
Btu/in/ft
2
/
hr/
0
F
1300
0
F
245 Btu/in/ft
2
/
hr/
0
F
Heat Treatment
Welding
Soft Annealing
Stress Relieving
Hardening (Refer to TTT diagram on page 2)
Tempering (See tempering diagram on page 2)
• Tempering hardness is approximate and based on two hours at
temperature
• In order to achieve faster quench rates, generous radii and ma-
chining stock should be left on during rough machining.
• Optimal heat treatment parameters should be followed to achieve
maximum potential die performance.
• Please contact your Schmolz & Bickenbach heat treat representa-
tive for more detailed in
formation.
Temperature
Cooling
Hardness
1345
o
F - 1435
o
F
Furnace 20
o
F/hour to 1200
o
F
Then air cool.
235 HB
Max
Temperature
Cooling
Hardness
1200
o
F for 2
hours
Cool slowly to 900
o
F in air
230 HB
Max
Temperature
Cooling
Hardness
1875
o
F - 1920
o
F
Hold at
temperature for
30 minutes
Vacuum quench at 50
o
F/min.
to 1000
o
F then cool to below
150
o
F
55 HRC
Max
Quenched
Temperature
o
F
752
932
1022
1112
1202
1292
Hardness
HRC
52
55
55
52
45
36
• THYROTHERM® 2367 Supra can be welded in an annealed and
hardened condition if machining errors, design changes or minor
cracking have occurred. TIG (Tungsten Inert Gas) should pref-
erably be used.
Welding Guidelines
Welding Temperatures
Process
Tig
Current
D.C.
Amperage (A)
100-150
Electrode
Tungsten Thorium
Electrode Diameter
0.10 – 0.17
Protective Gas
Argon
Flow (L/mm)
10
Filler Rod
AISI H-13
Preheat
Temp.
Maintained
Temperature
during
welding
Cool
Down to:
Stress Relieve
620
o
F to
900
o
F
Above 600
o
F 150
o
F
1050
o
F for 2 hours
or 30-50
o
F below previous
tempering temperature
Polishing
For highly cosmetic applications, the tool should be heat treated to the
highest hardness possible. Size of the tool will determine the maxi-
mum hardness. A-1 polish is achievable when proper procedures are
followed. A Schmolz & Bickenbach
representative should be con-
sulted when
determining the hardness.
USA 800.323.1233 CANADA 800.268.4977 HEAT TREATMENT 800.265.0862
www.schmolz-bickenbach.us www.schmolz-bickenbach.ca
THYROTHERM
®
2367 SUPRA
Technical Data Sheet (cont.)
Time-Temperature-Transformation Diagram.
Austenitizing Temperature 1875—1920
o
F
Cooling Curve Number
1
2
3
4
5
6
7
8
9
10
11
Hardness (HV 10)
690 673 665 627 620 620 634 606 606 554 548
Hardness (HRc approx.) 62 61 59 58 58 58 59 57 57 54.5 54
12
525
53
Tempering Diagram
Industry Standards
THYROTHERM® 2367 SUPRA ESR meets or ex-
ceeds the following standards:
• NADCA #207-2006
• Ford Motor Company AMTD-DC2010
•
All statements regarding the properties or utilization
of the materials or products mentioned are for the
purposes of description only. Guarantees regarding
the existence of certain properties or a certain utiliza-
tion are only valid if agreed upon in writing.
General Notes
30
34
42
38
46
50
54
58
62
66
70
212 392 572 752 932 1112
0
1292 1472
Hardness in HRC
Temperature in °F
2 1 9 2
2 0 1 2
1 8 3 2
1 6 5 2
1 4 7 2
1 2 9 2
111 2
9 3 2
7 5 2
5 7 2
3 9 2
2 1 2
0
10
0
10
1
10
2
10
0
10
1
10
2
10
3
10
4
10
0
10
1
10
2
10
3
10
4
10
5
10
6
Ac
1b
A + C
M
S
M
P
1
2
3
4
5
6
6
7
8
9
10
11
Ac
1c
Temperature in
o
F
Time (s)
Time (min)
Time
Hardness
:1560oF
:1740oF
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