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Crucible Steel Cru-Wear® Tool Steel

Category Metal , Ferrous Metal , Carbon Steel , High Carbon Steel , Tool Steel , Air-Hardening Steel
Manufacturer Crucible Steel
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Crucible Steel Cru-Wear® Tool Steel.pdf
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Material Notes:
CRU-WEAR is an air-hardening tool steel, heat treatable to HRC 60-65. Designed as an upgrade to D2, it offers better wear resistance, greater toughness and higher attainable hardness. Compared to the chemistry of D2, (D2 = 1.55% carbon, 11.5% chromium, 0.8% vanadium, and 0.9% molybdenum), CRU-WEAR has less carbon and less chromium, but more vanadium and tungsten. Both D2 and CRU-WEAR contain carbides for wear resistance, but CRU-WEAR has more vanadium carbides than D2. Vanadium carbides are harder than chromium carbides and are much more effective in providing wear resistance. Because CRU-WEAR contains less carbon than D2, its overall carbide volume is lower, making it tougher than D2. (Note: Although CRU-WEAR contains fewer total carbides, it has more of the type of carbides that are most effective for wear resistance.) CRU-WEAR’s higher attainable hardness results from the fact that it contains sufficient tungsten and molybdenum to cause a secondary hardening response, (up to HRC 65), which does not occur in D2. Finally, CRU-WEAR tempers at a higher range (900-1050°F) than D2 (400-600°F), so it is more compatible with a wide variety of surface treatments.Information provided by Specialty Metals.
Physical Properties Metric English Comments
Density 7.80 g/cc
0.282 lb/in³
Mechanical Properties Metric English Comments
Hardness, Brinell 225 - 255
225 - 255
Annealed
Hardness, Rockwell C 62
62
Modulus of Elasticity 207 GPa
30000 ksi
Charpy Impact 40.0 J
29.5 ft-lb
Austenitizing Temperature- 1065°C
Thermal Properties Metric English Comments
CTE, linear 11.2 µm/m-°C

@Temperature 20.0 - 325 °C
6.22 µin/in-°F

@Temperature 68.0 - 617 °F
Thermal Conductivity 23.5 W/m-K

@Temperature 95.0 °C
163 BTU-in/hr-ft²-°F

@Temperature 203 °F
Shrinkage -0.150 %
-0.150 %
Component Elements Properties Metric English Comments
Carbon, C 1.1 %
1.1 %
Chromium, Cr 7.5 %
7.5 %
Iron, Fe 86.25 %
86.25 %
As Remainder
Molybdenum, Mo 1.6 %
1.6 %
Tungsten, W 1.15 %
1.15 %
Vanadium, V 2.4 %
2.4 %
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