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ASTM A372 Grade F Class 55 Steel – Normalized, Tempered & Quenched Treatments

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	20 %
Hardness, Brinell	20.0 °C	179 [-]
Poisson's ratio	20.0 °C	0.29 [-]	Typical for Low Carbon Steel
Shear modulus	20.0 °C	75 - 80 GPa	Typical for Carbon Steel
Tensile strength	20.0 °C	545 - 760 MPa
Yield Strength Rp0.2, short transverse	20.0 °C	380 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	0.3 - 0.4 %
Chromium	0.8 - 1.15 %
Manganese	0.7 - 1 %
Molybdenum	0.15 - 0.25 %
Phosphorus	0.02 %
Silicon	0.15 - 0.35 %
Sulfur	0.01 %

ASTM A27 Grade 70-40 Steel: Properties of Annealed, Normalized, or Quenched & Tempered Conditions ASTM A463 HSLAS Type A Grade 340 – Premium Hot‑Dip Aluminum‑Coated Steel

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