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ASTM A757 Grade A2Q: High-Performance Quenched & Tempered Steel for Structural Applications

Properties

General

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

Mechanical

Property	Temperature	Value	Comment
Charpy impact energy	23.0 °C	20 J
Elastic modulus	23.0 °C	200 - 215 GPa	Typical for Low Carbon Steel
Elongation A50	23.0 °C	22 %
Poisson's ratio	23.0 °C	0.29 [-]	Typical for Low Carbon Steel
Reduction of area	23.0 °C	35 %
Shear modulus	23.0 °C	82 GPa	Typical for Low Carbon Steel
Tensile strength	23.0 °C	485 MPa
Yield strength Rp0.2	23.0 °C	275 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	23.0 °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
Specific heat capacity	23.0 °C	465 J/(kg·K)	Typical for Low Carbon Steel
Thermal conductivity	23.0 °C	25 - 93 W/(m·K)	Typical for Low Carbon Steel

Electrical

Property	Temperature	Value	Comment
Electrical resistivity	23.0 °C	1.43E-7 - 1.74E-7 Ω·m	Typical for Carbon Steel

Magnetic

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

Chemical properties

Property	Value
Carbon	0.25 %
Manganese	1.2 %
Phosphorus	0.03 %
Silicon	0.6 %
Sulfur	0.025 %

ASTM B316 Grade 2117 T4 – High-Strength 2000 Series Aluminum Alloy ASTM B241 Grade 6066 O – Premium 6066 Aluminum Alloy for Structural Use

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