Carbodur 7131 Blank Hardened

Alternative and trade names
Carbodur 7131, 1.7131, 16MnCr5
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Description

1.7131 (16MnCr5) is a case hardening steel which used for gear parts and other parts of mechanical engineering, which are case hardened after machining.

Related Standards

Equivalent Materials

This material data has been provided by Deutsche Edelstahlwerke Specialty Steel (DEW).

"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

PropertyValue

Density

7.8 g/cm³

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Dimension

PropertyValueComment

Diameter

63 mm

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max.

Mechanical

PropertyValueComment

Elastic modulus

210 GPa

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Elongation

9 - 11 %

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A5

Hardness, Brinell

138 - 237 [-]

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Depending on the delivery condition

Reduction of area

35 - 40 %

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Tensile strength

640 - 1180 MPa

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Yield strength

440 - 635 MPa

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Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

100 °C

1.15e-05 1/K

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for 20°C to the mentioned temperature

200 °C

1.25e-05 1/K

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for 20°C to the mentioned temperature

300 °C

1.33e-05 1/K

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for 20°C to the mentioned temperature

400 °C

1.39e-05 1/K

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for 20°C to the mentioned temperature

Specific heat capacity

431 J/(kg·K)

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Thermal conductivity

44 W/(m·K)

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Electrical

PropertyValue

Electrical resistivity

1.9e-07 Ω·m

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Chemical properties

PropertyValue

Carbon

0.14 - 0.19 %

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Chromium

0.8 - 1.1 %

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Iron

Balance

Manganese

1 - 1.3 %

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Phosphorus

0.025 %

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Silicon

0.4 %

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Sulfur

0.035 %

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Technological properties

Property
Application areas

It is used for gear parts and other parts of mechanical engineering.

Heat Treatment

Soft annealing: 650-700°C, Case Hardening: 880-980°C (Oil, Polymer), Direct hardening: 880-980°C (Oil, Polymer), Core Hardening: 860-900°C (Oil, Polymer), Surface hardening: 780-820°C (Oil, Polymer), Tempering: 150-200°C (Air)

Hot forming

It is formable at 850-1100°C.

Processing history

Blank Hardened

Welding

It is usually weldable.