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ASTM A350 Grade LF1 Class 1 Heat‑Treated Steel – Premium Medium‑Carbon Performance

Properties

General

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

Mechanical

Property	Temperature	Value	Comment
Charpy impact energy	23.0 °C	18 J
Elastic modulus	23.0 °C	200 - 215 GPa	Typical for Medium Carbon Steel
Elongation A50	23.0 °C	28 %
Poisson's ratio	23.0 °C	0.29 [-]	Typical for Medium Carbon Steel
Reduction of area	23.0 °C	38 %
Shear modulus	23.0 °C	75 - 80 GPa	Typical for Carbon Steel
Tensile strength	23.0 °C	415 - 585 MPa
Yield strength Rp0.2	23.0 °C	205 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	23.0 °C	1.32E-5 1/K	Typical for Medium Carbon Steel
Max service temperature		500 °C	Typical for Carbon Steel
Melting point		1380 - 1514 °C	Typical for Medium Carbon Steel
Specific heat capacity	23.0 °C	470 - 520 J/(kg·K)	Typical for Medium Carbon Steel
Thermal conductivity	23.0 °C	21 - 52 W/(m·K)	Typical for Medium Carbon Steel

Electrical

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

Chemical properties

Property	Value
Carbon	0.3 %
Chromium	0.3 %
Copper	0.4 %
Manganese	0.6 - 1.35 %
Molybdenum	0.12 %
Nickel	0.4 %
Niobium	0.02 %
Phosphorus	0.04 %
Silicon	0.15 - 0.3 %
Sulfur	0.04 %
Vanadium	0.08 %

ASTM A334 Grade 7 Normalized Stainless Steel – Key Mechanical & Physical Properties ASTM A311 Grade 1045: Cold Drawn & Stress-Relief Annealed Steel – Performance Specs

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