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Crucible Steel HALCOMB® 425 Tool Steel, AISI H19

Category Metal , Ferrous Metal , Tool Steel
Manufacturer Crucible Steel
Trade Name HALCOMB®
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Crucible Steel HALCOMB® 425 Tool Steel, AISI H19.pdf
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Material Notes:
Halcomb 425 is designed for higher operating temperatures than H13, where wear resistance and heat check resistance are more critical than toughness. While H19 has excellent heat checking resistance, drastic cooling (flooding, dunking) should be avoided due to the risk of thermal shock. Halcomb 425 may be used for tool temperatures up to about 1100F, with brief exposures up to about 1200/1250F.Information provided by Crucible Industries
Physical Properties Metric English Comments
Density 7.97 g/cc
0.288 lb/in³
Mechanical Properties Metric English Comments
Hardness, Brinell 207 - 241
207 - 241
Hardness, Rockwell C 39 - 40

@Tempering Temp. 677 °C
 39 - 40

@Tempering Temp. 1250 °F
 oil quenched from 2100°F then tempered
45 - 46

@Tempering Temp. 649 °C
 45 - 46

@Tempering Temp. 1200 °F
 oil quenched from 2100°F then tempered
49 - 50

@Tempering Temp. 621 °C
 49 - 50

@Tempering Temp. 1150 °F
 oil quenched from 2100°F then tempered
51 - 52

@Tempering Temp. 593 °C
 51 - 52

@Tempering Temp. 1100 °F
 oil quenched from 2100°F then tempered
54 - 55

@Tempering Temp. 566 °C
 54 - 55

@Tempering Temp. 1050 °F
 oil quenched from 2100°F then tempered
56 - 67

@Tempering Temp. 538 °C
 56 - 67

@Tempering Temp. 1000 °F
 oil quenched from 2100°F then tempered
Modulus of Elasticity 207 GPa
30000 ksi
Charpy Impact 8.13 J

@Temperature 21.1 °C
 6.00 ft-lb

@Temperature 70.0 °F
 48-50 HRC; V-notch
14.9 J

@Temperature 21.1 °C
 11.0 ft-lb

@Temperature 70.0 °F
 38-40 HRC; V-notch
17.6 J

@Temperature 260 °C
 13.0 ft-lb

@Temperature 500 °F
 48-50 HRC; V-notch
20.3 J

@Temperature 538 °C
 15.0 ft-lb

@Temperature 1000 °F
 48-50 HRC; V-notch
31.2 J

@Temperature 260 °C
 23.0 ft-lb

@Temperature 500 °F
 38-40 HRC; V-notch
40.7 J

@Temperature 538 °C
 30.0 ft-lb

@Temperature 1000 °F
 38-40 HRC; V-notch
Thermal Properties Metric English Comments
CTE, linear 11.0 µm/m-°C

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

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

@Temperature 21.1 - 427 °C
 6.70 µin/in-°F

@Temperature 70.0 - 800 °F
13.0 µm/m-°C

@Temperature 21.1 - 649 °C
 7.20 µin/in-°F

@Temperature 70.0 - 1200 °F
Thermal Conductivity 2.23 W/m-K

@Temperature 93.3 °C
 15.5 BTU-in/hr-ft²-°F

@Temperature 200 °F
2.45 W/m-K

@Temperature 316 °C
 17.0 BTU-in/hr-ft²-°F

@Temperature 600 °F
Component Elements Properties Metric English Comments
Carbon, C 0.40 %
0.40 %
Chromium, Cr 4.25 %
4.25 %
Cobalt, Co 4.2 %
4.2 %
Iron, Fe 83.65 %
83.65 %
as balance
Manganese, Mn 0.40 %
0.40 %
Molybdenum, Mo 0.40 %
0.40 %
Silicon, Si 0.40 %
0.40 %
Tungsten, W 4.2 %
4.2 %
Vanadium, V 2.1 %
2.1 %
Chemical Properties Metric English Comments
Critical Temperature 838 °C
1540 °F
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