ASTM A681 Grade Type O2 Annealed

Equivalent material: DIN 1.2842, DIN 90MnCrV8, AFNOR 90MnCrV8, BS BO2, BS 90MnCrV8, UNI 88MnV8KU, AISI O2, SAE O2, EN 90MnCrV8, EN 90MnV8, EN 1.2842, ISO 90MnCrV8, GOST 9G2F, GB/T 9Mn2V, GB/T T20000, UNS T31502

ASTM A681 Grade Type O2 Annealed general

Property Temperature Value Comment
Density 23.0 °C Density of 7.72 - 8 g/cm³ Typical for Tool And Machining Steel

ASTM A681 Grade Type O2 Annealed thermal

Property Temperature Value Comment
Coefficient of thermal expansion 23.0 °C Coefficient of thermal expansion of 1E-5 - 1.3E-5 1/K Typical for Tool And Machining Steel
Melting point - Melting point of 1370 - 1425 °C Typical for Tool And Machining Steel
Specific heat capacity 23.0 °C Specific heat capacity of 420 - 460 J/(kg·K) Typical for Tool And Machining Steel
Thermal conductivity 23.0 °C Thermal conductivity of 17 - 42 W/(m·K) Typical for Tool And Machining Steel

ASTM A681 Grade Type O2 Annealed chemical

Property Value
Carbon Carbon of 0.85 - 0.95 %
Chromium Chromium of 0.5 %
Manganese Manganese of 1.4 - 1.8 %
Molybdenum Molybdenum of 0.3 %
Phosphorus Phosphorus of 0.03 %
Silicon Silicon of 0.5 %
Sulfur Sulfur of 0.03 %
Vanadium Vanadium of 0.3 %

ASTM A681 Grade Type O2 Annealed mechanical

Property Temperature Value Comment
Elastic modulus 23.0 °C Elastic modulus of 203 - 211 GPa Typical for Tool And Machining Steel
Hardness, Brinell 23.0 °C Hardness, Brinell of 217 [-] -
Poisson's ratio 23.0 °C Poisson's ratio of 0.3 [-] Typical for Tool And Machining Steel
Shear modulus 23.0 °C Shear modulus of 79 GPa Typical for Tool And Machining Steel

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