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ASTM A958 SC1025 65/35 Heat‑Treated Low Carbon Steel – High Strength

Properties

General

Property	Temperature	Value	Comment
Density	20.0 °C	7.8 - 7.9 g/cm³	Typical for Low Carbon Steel

Mechanical

Property	Temperature	Value	Comment
Elastic modulus	20.0 °C	200 - 215 GPa	Typical for Low Carbon Steel
Elongation A50	20.0 °C	24 %
Poisson's ratio	20.0 °C	0.29 [-]	Typical for Low Carbon Steel
Reduction of area	20.0 °C	35 %
Shear modulus	20.0 °C	75 - 80 GPa	Typical for Carbon Steel
Tensile strength	20.0 °C	450 MPa
Yield strength	20.0 °C	240 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	20.0 °C	1.32E-5 - 1.38E-5 1/K	Typical for Low Carbon Steel
Max service temperature		500 °C	Typical for Carbon Steel
Melting point		1480 - 1526 °C	Typical for Low Carbon Steel

Electrical

Property	Temperature	Value	Comment
Electrical resistivity	20.0 °C	1.43E-7 - 1.74E-7 Ω·m	Typical for Carbon Steel

Magnetic

Property	Temperature	Value	Comment
Curie temperature	20.0 °C	770 °C	Typical for Low Carbon Steel

Chemical properties

Property	Value
Carbon	0.22 - 0.28 %
Manganese	0.4 - 0.8 %
Phosphorus	0.04 %
Silicon	0.3 - 0.6 %
Sulfur	0.04 %

ASTM A678 Grade B Quenched & Tempered Steel – High-Performance Low‑Carbon Alloy ASTM A792 Grade 255: Key Mechanical & Physical Properties

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