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Tool steel M2

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USA: AISI M2, UK: BM2, Sweden: 2722, Germany: 1.3341, Japan: SKH9
Chemical composition: C=0.9%, Mn=0.3%, W=6%, Si=0.3%, Cr=4%, Mo=5%, V=2%
Property Value in metric unit Value in US unit
Density 8.17 *10³ kg/m³ 510.0 lb/ft³
Modulus of elasticity 228 GPa 33000 ksi
Thermal expansion (20 ºC) 11.0*10-6 ºCˉ¹ 6.1*10-6 in/(in* ºF)
Specific heat capacity 418 J/(kg*K) 0.10 BTU/(lb*ºF)
Thermal conductivity 24 W/(m*K) 167 BTU*in/(hr*ft²*ºF)
Annealing temperature 870...890 ºC 1600...1630 ºF
Quenching temperature 1150-1220 ºC 2100-2230 ºF
Tempering temperature 540...650 ºC 1000...1200 ºF
Hardness (annealed) 97 RB 97 RB
Hardness (hardened) 66 RC 66 RC
Quenching medium Oil, air or salt
Hardening depth High
Resistivity to distortion High
Resistivity to cracking Medium
Machinability Medium
Toughness Low
Wear resistance Very high

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tool_steel_m2.txt · Last modified: 2023/12/13 by dmitri_kopeliovich
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