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EN 10277-2 Grade ZSt50-2: Premium Cold-Drawn Steel for High-Performance Applications

ZSt 50-2 is a bright drawn steel grade for wear and strength loaded parts (bolts, shafts, spindles).

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
Elongation	20.0 °C	5 - 10 %
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
Tensile strength	20.0 °C	490 - 960 MPa
Yield strength	20.0 °C	265 - 590 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 %
Phosphorus	0.05 %
Sulfur	0.05 %

EN 12163 CuCr1Zr R470 – High-Strength, Low-Temperature Hardenable Copper Alloy EN 10277‑2 Grade ZSt50‑2: Cold‑Drawn & Turned High‑Strength Steel

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