SEW 520 Grade G12MnMo7-4 quenched and tempered (+QT)

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Description

For the material G12MnMo7-4, which is suitable for great wall thicknesses, the desired properties can be adjusted to a large extent without taking the wall thickness into account because of the materials capability of precipitation hardening. The material possesses an outstandingly low carbon equivalent and, therefore, is still weldable without preheating and subsequent heat treatment with greater wall thicknesses, too. With its mechanical properties and its weldability, G12MnMo7-4 corresponds to the rolled or forged fine-grain structural steels StE 460c and StE 500 and, therefore, presents itself as a good choice for high-strength welded constructions. In addition to high values for the 0.2% proof strength, the material distinguishes itself by relatively high values of the notch impact energy at the same time. Applcation: is chiefly applied in the mechanical engineering and the vehicle manufacturing, furthermore in the plant engineering and crane construction, in the offshore-technology as well as in the underground mining at climatically determined temperatures.

Related Standards

SEW 520

Equivalent Materials

This material data has been provided by WIAM.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

Property	Temperature	Value	Comment
Density	23.0 °C	7.8 - 7.9 g/cm³ Show Material materials with Density of 7.8 - 7.9 g/cm³	Typical for Molybdenum Steel

Mechanical

Property	Temperature	Value	Comment
Elastic modulus	23.0 °C	200 - 215 GPa Show Material materials with Elastic modulus of 200 - 215 GPa	Typical for Molybdenum Steel
Elongation	20.0 °C	16 % Show Material materials with Elongation of 16 %
Poisson's ratio	23.0 °C	0.29 [-] Show Material materials with Poisson's ratio of 0.29 [-]	Typical for Molybdenum Steel
Tensile strength	20.0 °C	600 - 750 MPa Show Material materials with Tensile strength of 600 - 750 MPa
Yield strength	20.0 °C	500 MPa Show Material materials with Yield strength of 500 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	23.0 °C	1.29E-5 1/K Show Material materials with Coefficient of thermal expansion of 1.29E-5 1/K	Typical for Molybdenum Steel
Melting point		1382 - 1529 °C Show Material materials with Melting point of 1382 - 1529 °C	Typical for Molybdenum Steel
Specific heat capacity	23.0 °C	456 J/(kg·K) Show Material materials with Specific heat capacity of 456 J/(kg·K)	Typical for Molybdenum Steel
Thermal conductivity	23.0 °C	37 - 48 W/(m·K) Show Material materials with Thermal conductivity of 37 - 48 W/(m·K)	Typical for Molybdenum Steel

Chemical properties

Property	Value
Carbon	0.08 - 0.15 % Show Material materials with Carbon of 0.08 - 0.15 %
Chromium	0.2 % Show Material materials with Chromium of 0.2 %
Manganese	1.5 - 1.8 % Show Material materials with Manganese of 1.5 - 1.8 %
Molybdenum	0.3 - 0.4 % Show Material materials with Molybdenum of 0.3 - 0.4 %
Niobium	0.05 % Show Material materials with Niobium of 0.05 %
Nitrogen	0.02 % Show Material materials with Nitrogen of 0.02 %
Phosphorus	0.02 % Show Material materials with Phosphorus of 0.02 %
Silicon	0.6 % Show Material materials with Silicon of 0.6 %
Sulfur	0.015 % Show Material materials with Sulfur of 0.015 %
Vanadium	0.1 % Show Material materials with Vanadium of 0.1 %