DIN 1651 Grade 9SMnPb28 Cold-Drawn, Stress-Relieved Steel – Superior Cutting Performance & Surface Quality

The balanced machining steel 9 SMnPb 28 is used for higher demands on the cutting capacity and surface condition. The steel shows a lower crack sensitivity. Application: automotive engineering, toolbuilding, apparatus engineering

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

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	550 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	610 J/(kg·K)

Thermal conductivity	20.0 °C	54.4 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	0.14 %
Lead	0.15 - 0.35 %
Manganese	0.9 - 1.3 %
Phosphorus	0.1 %
Silicon	0.05 %
Sulfur	0.27 - 0.33 %

DIN 1651 Grade 10SPb20 – Cold Drawn & Stress‑Relieved Machining Steel for Automotive Parts DIN 1651 Grade 9 SMnPb36 Cold‑Drawn & Stress‑Relieved Steel – Optimal for High‑Performance Machining

Metal