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Schmolz + Bickenbach Cryodur® 2379 (D-2) Cold Work Die Steel

Category Metal , Ferrous Metal , Tool Steel , Cold Work Steel
Manufacturer Schmolz + Bickenbach (Swiss Steel International)
Trade Name Cryodur®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Schmolz + Bickenbach Cryodur® 2379 (D-2) Cold Work Die Steel.pdf
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Material Notes:
Description: Cryodur® 2379 is a high carbon, high chromium tool steel developed for high wear applications and Supplied in the annealed conditionCharacteristics: Excellent abrasive wear resistance; High compressive strength; Good stability during heat treatment; and Good through hardening propertiesApplications: Forming Rolls, Threading rolls, Fine blanking die, Cold extrusion dies, Coining dies, and Trim dieStress Relieving (Heat Treatment): 1200°F-1290°F; Cooling: Hold time 2 hours, slowly cool to 930°F, then air coolHardening (Heat Treatment): 1840°F-1905°F Hold at temperature for 30 minutes; Cooling: Furnace quench to 350°F, air cool to 120°F, immediately temper; Hardness:
Physical Properties Metric English Comments
Density 7.70 g/cc
0.278 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell C 50

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

@Treatment Temp. 1112 °F,
Time 2.00 hour
56

@Treatment Temp. 550.0 °C,
Time 7200 sec
56

@Treatment Temp. 1022 °F,
Time 2.00 hour
58

@Treatment Temp. 300 °C,
Time 7200 sec
58

@Treatment Temp. 572 °F,
Time 2.00 hour
58

@Treatment Temp. 400 °C,
Time 7200 sec
58

@Treatment Temp. 752 °F,
Time 2.00 hour
58

@Treatment Temp. 500 °C,
Time 7200 sec
58

@Treatment Temp. 932 °F,
Time 2.00 hour
61

@Treatment Temp. 200 °C,
Time 7200 sec
61

@Treatment Temp. 392 °F,
Time 2.00 hour
63

@Treatment Temp. 100 °C,
Time 7200 sec
63

@Treatment Temp. 212 °F,
Time 2.00 hour
Compressive Strength 1900 MPa
275000 psi
55 HRC
2140 MPa
310000 psi
60 HRC
2210 MPa
320000 psi
62 HRC
Thermal Properties Metric English Comments
CTE, linear 10.4 µm/m-°C

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

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

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

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

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

@Temperature 70.0 - 750 °F
Thermal Conductivity 16.7 W/m-K

@Temperature 20.0 °C
116 BTU-in/hr-ft²-°F

@Temperature 68.0 °F
20.5 W/m-K

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

@Temperature 650 °F
24.2 W/m-K

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

@Temperature 1300 °F
Component Elements Properties Metric English Comments
Carbon, C 1.55 %
1.55 %
Chromium, Cr 12 %
12 %
Iron, Fe 84.15 %
84.15 %
Manganese, Mn 0.35 %
0.35 %
Molybdenum, Mo 0.75 %
0.75 %
Silicon, Si 0.30 %
0.30 %
Vanadium, V 0.90 %
0.90 %
Processing Properties Metric English Comments
Annealing Temperature 829.4 - 860 °C
1525 - 1580 °F
Soft; Cooling: Furnace 20°F/hour to 1200°F/ Then air cool; < 250 HB
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