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ISO 16120-4 Grade C36D2 – Premium Non‑Alloy Steel Wire Rod for Springs & Cold Rolling

Non-alloy steel wire rod for drawing and/or cold rolling with specific requirements for special applications (e.g. application for springs, steel wire).

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
Elastic modulus	23.0 °C	200 - 215 GPa	Typical for Medium Carbon Steel
Poisson's ratio	23.0 °C	0.29 [-]	Typical for Medium Carbon Steel
Shear modulus	23.0 °C	75 - 80 GPa	Typical for Carbon Steel

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
Aluminium	0.01 %
Carbon	0.34 - 0.38 %
Chromium	0.1 %
Copper	0.15 %
Manganese	0.5 - 0.7 %
Molybdenum	0.03 %
Nickel	0.1 %
Nitrogen	7E-3 %
Phosphorus	0.02 %
Silicon	0.1 - 0.3 %
Sulfur	0.025 %

ISO 16120-4 Grade C32D2 – Premium Medium-Carbon Steel Wire Rod ISO 16120-4 Grade C38D2: Premium Medium Carbon Steel Wire Rod for Springs & Wire Applications

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