EN 10277-3 Grade 10SPb20 Cold-Drawn Steel – Uniform Properties & Enhanced Machinability

The free cutting case hardening steel 10SPb020 shows uniform properties of the cross-section and within the melt as well as enhanced machinability by Pb- and S-addition. Application for thin-walled case hardened parts in car industry, apparatus, equipment and machine engineering. As a bright steel product it is used in the form of bars, bright, straight, in various conditions (see DIN EN 10277 : 1999-10).

Properties

General

Property	Temperature	Value
Density	20.0 °C	7.85 g/cm³

Mechanical

Property	Temperature	Value	Comment
Elastic modulus	20.0 °C	210 GPa
	200.0 °C	193 GPa
	300.0 °C	185 GPa
	400.0 °C	175 GPa

Elongation	20.0 °C	7 - 11 %
Poisson's ratio	23.0 °C	0.29 [-]	Typical for Low Carbon Steel
Shear modulus	20.0 °C	81 GPa
Tensile strength	20.0 °C	380 - 780 MPa
Yield strength Rp0.2	20.0 °C	235 - 410 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	100.0 °C	1.1E-5 1/K
	200.0 °C	1.18E-5 1/K
	400.0 °C	1.32E-5 1/K

Max service temperature		500 °C	Typical for Carbon Steel
Melting point		1480 - 1526 °C	Typical for Low Carbon Steel
Specific heat capacity	20.0 °C	460 J/(kg·K)
	100.0 °C	480 J/(kg·K)
	200.0 °C	520 J/(kg·K)
	400.0 °C	600 J/(kg·K)

Thermal conductivity	20.0 °C	52.4 W/(m·K)

Electrical

Property	Temperature	Value
Electrical resistivity	20.0 °C	1.1E-7 Ω·m

Magnetic

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

Chemical properties

Property	Value
Carbon	0.07 - 0.13 %
Lead	0.2 - 0.35 %
Manganese	0.7 - 1.1 %
Phosphorus	0.06 %
Silicon	0.4 %
Sulfur	0.15 - 0.25 %

EN 10277‑3 Grade 10S20 – Rolled, Turned & Surface‑Hardened (SH) Steel EN 10277-3: 11SMn30 Grade Steel – Rolled, Turned, and Surface-Hardened

Metal