ASTM A668 Class H Normalized and tempered

Equivalent material: ASTM H, UNS K24045

ASTM A668 Class H Normalized and tempered general

Property Temperature Value Comment
Density 23.0 °C Density of 7.8 - 7.9 g/cm³ Typical for Nickel Chromium Molybdenum Steel

ASTM A668 Class H Normalized and tempered 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 Nickel Chromium Molybdenum Steel
Melting point - Melting point of 1382 - 1529 °C Typical for Nickel Chromium Molybdenum Steel
Specific heat capacity 23.0 °C Specific heat capacity of 448 - 670 J/(kg·K) Typical for Nickel Chromium Molybdenum Steel
Thermal conductivity 23.0 °C Thermal conductivity of 34 - 54 W/(m·K) Typical for Nickel Chromium Molybdenum Steel

ASTM A668 Class H Normalized and tempered electrical

Property Value
Phosphorus Phosphorus of 0.04 %
Sulfur Sulfur of 0.025 %

ASTM A668 Class H Normalized and tempered mechanical

Property Temperature Value Comment
Elastic modulus 23.0 °C Elastic modulus of 200 - 215 GPa Typical for Nickel Chromium Molybdenum Steel
Elongation A50 23.0 °C Elongation A50 of 18 - 22 % -
Hardness, Brinell 23.0 °C Hardness, Brinell of 187 - 235 [-] -
Poisson's ratio 23.0 °C Poisson's ratio of 0.29 [-] Typical for Nickel Chromium Molybdenum Steel
Reduction of area 23.0 °C Reduction of area of 40 - 44 % -
Tensile strength 23.0 °C Tensile strength of 620 MPa -
Yield strength 23.0 °C Yield strength of 400 - 415 MPa -

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