ISO 683-4 Grade 44SMnPb28 quenched and tempered (+QT)

ISO 683-4 Grade 44SMnPb28 quenched and tempered (+QT) introduction

The free-cutting steel 44SMnPb28, suitable for quenching and tempering, shows enhanced machinability. Application for turned parts of higher strength requirements.

Equivalent material: GB Y45MnSPb, GB L20469, EN 1.0763, ISO 44SMnPb28, DIN 1.0763, DIN 44SMnPb28, AFNOR 44SMnPb28, BS 44SMnPb28, AISI 1144, SAE 1144, GB/T L20469, GB/T Y45MnSPb, ASTM Grade 1144, ASTM 1144, UNS G11440

ISO 683-4 Grade 44SMnPb28 quenched and tempered (+QT) general

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

ISO 683-4 Grade 44SMnPb28 quenched and tempered (+QT) thermal

Property Temperature Value Comment
Coefficient of thermal expansion 23.0 °C Coefficient of thermal expansion of 1.33E-5 1/K Typical for Manganese Steel
Melting point - Melting point of 1382 - 1529 °C Typical for Manganese Steel
Specific heat capacity 23.0 °C Specific heat capacity of 510 - 553 J/(kg·K) Typical for Manganese Steel
Thermal conductivity 23.0 °C Thermal conductivity of 14 - 16 W/(m·K) Typical for Manganese Steel

ISO 683-4 Grade 44SMnPb28 quenched and tempered (+QT) chemical

Property Value
Carbon Carbon of 0.4 - 0.48 %
Lead Lead of 0.15 - 0.35 %
Manganese Manganese of 1.3 - 1.7 %
Phosphorus Phosphorus of 0.06 %
Silicon Silicon of 0.4 %
Sulfur Sulfur of 0.24 - 0.33 %

ISO 683-4 Grade 44SMnPb28 quenched and tempered (+QT) mechanical

Property Temperature Value Comment
Elastic modulus 23.0 °C Elastic modulus of 200 - 215 GPa Typical for Manganese Steel
Elongation 20.0 °C Elongation of 16 % -
Poisson's ratio 23.0 °C Poisson's ratio of 0.29 [-] Typical for Manganese Steel
Tensile strength 20.0 °C Tensile strength of 700 - 850 MPa -
Yield strength 20.0 °C Yield strength of 400 - 520 MPa -

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