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Schmolz + Bickenbach Thermodur® E38K Hot Work Die Steel

Category Metal , Ferrous Metal , Tool Steel , Hot Work Steel
Manufacturer Schmolz + Bickenbach (Swiss Steel International)
Trade Name Thermodur®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Schmolz + Bickenbach Thermodur® E38K Hot Work Die Steel.pdf
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Material Notes:
Description: Thermodur® E38K is an electro slag remelted (ESR) modified H-11 die steel, developed for hot working applications where maximum mechanical strength (toughness) properties are required.Characteristics: Superior toughness; Excellent hardenability; Good thermal conductivity; and Good polishabilityApplications: Large high pressure die casting dies, Large hot forging dies and Aluminum extrusion toolingStress Relieving (Heat Treatment): 1200°F for 2 hours; Cooling: Cool slowly to 930°F in air; Hardness:
Physical Properties Metric English Comments
Density 7.78 g/cc
0.281 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell C 34

@Treatment Temp. 700.0 °C,
Time 7200 sec
 34

@Treatment Temp. 1292 °F,
Time 2.00 hour
47

@Treatment Temp. 650.0 °C,
Time 7200 sec
 47

@Treatment Temp. 1202 °F,
Time 2.00 hour
50

@Treatment Temp. 600.0 °C,
Time 7200 sec
 50

@Treatment Temp. 1112 °F,
Time 2.00 hour
51

@Treatment Temp. 400 °C,
Time 7200 sec
 51

@Treatment Temp. 752 °F,
Time 2.00 hour
51

@Treatment Temp. 500 °C,
Time 7200 sec
 51

@Treatment Temp. 932 °F,
Time 2.00 hour
52

@Treatment Temp. 550.0 °C,
Time 7200 sec
 52

@Treatment Temp. 1022 °F,
Time 2.00 hour
Tensile Strength 1410 MPa
204000 psi
44 HRC
1620 MPa
235000 psi
48 HRC
1810 MPa
263000 psi
52 HRC
Tensile Strength, Yield 1170 MPa

@Strain 0.200 %
 169000 psi

@Strain 0.200 %
 44 HRC
1300 MPa

@Strain 0.200 %
 188000 psi

@Strain 0.200 %
 48 HRC
1450 MPa

@Strain 0.200 %
 210000 psi

@Strain 0.200 %
 52 HRC
Elongation at Yield 12 %
12 %
52 HRC
13 %
13 %
48 HRC
14 %
14 %
44 HRC
Reduction of Area 35 %
35 %
52 HRC
38 %
38 %
48 HRC
50 %
50 %
44 HRC
Thermal Properties Metric English Comments
CTE, linear 11.9 µm/m-°C

@Temperature 21.1 - 93.3 °C
 6.60 µin/in-°F

@Temperature 70.0 - 200 °F
12.4 µm/m-°C

@Temperature 21.1 - 204 °C
 6.90 µin/in-°F

@Temperature 70.0 - 400 °F
12.8 µm/m-°C

@Temperature 21.1 - 399 °C
 7.10 µin/in-°F

@Temperature 70.0 - 750 °F
Thermal Conductivity 24.2 W/m-K

@Temperature 21.1 °C
 168 BTU-in/hr-ft²-°F

@Temperature 70.0 °F
27.2 W/m-K

@Temperature 343 °C
 189 BTU-in/hr-ft²-°F

@Temperature 650 °F
30.3 W/m-K

@Temperature 704 °C
 210 BTU-in/hr-ft²-°F

@Temperature 1300 °F
Component Elements Properties Metric English Comments
Carbon, C 0.35 %
0.35 %
Chromium, Cr 5.0 %
5.0 %
Iron, Fe >= 92.547 %
>= 92.547 %
Manganese, Mn 0.30 %
0.30 %
Molybdenum, Mo 1.35 %
1.35 %
Silicon, Si 0.30 %
0.30 %
Sulfur, S <= 0.0030 %
<= 0.0030 %
Vanadium, V 0.45 %
0.45 %
Processing Properties Metric English Comments
Annealing Temperature 740.6 - 779.4 °C
1365 - 1435 °F
Soft; Cooling: Furnace 20°F/hour to 1200°F/ Then air cool; < 170 HB
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