Carbodur 6758 QT

Alternative and trade names
Carbodur 6758, 1.6758, 23MnNiCrMo5-4
Want to keep this datasheet? Save it now in your required format

Description

1.6758 (23MnNiCrMo5-4) is mainly used for various chains in automotive accessories, Mechanical engineering and Mining.

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.

Ashby charts

See where falls on the material property chart for against in your materials selection and design process. Our Ashby charts are interactive with more technical data upon clicking. Sign up to get access to this premium feature for free.

Properties

General

PropertyValue

Density

7.8 g/cm³

Show Supplier Material materials with Density of 7.8 g/cm³

Dimension

PropertyValueComment

Diameter

63 mm

Show Supplier Material materials with Diameter of 63 mm

max.

Mechanical

PropertyValueComment

Charpy impact energy, V-notch

60 J

Show Supplier Material materials with Charpy impact energy, V-notch of 60 J

Elastic modulus

210 GPa

Show Supplier Material materials with Elastic modulus of 210 GPa

Elongation

10 - 12 %

Show Supplier Material materials with Elongation of 10 - 12 %

A5

Hardness, Brinell

210 - 275 [-]

Show Supplier Material materials with Hardness, Brinell of 210 - 275 [-]

Depending on the delivery condition

Reduction of area

50 %

Show Supplier Material materials with Reduction of area of 50 %

Tensile strength

1130 - 1225 MPa

Show Supplier Material materials with Tensile strength of 1130 - 1225 MPa

Yield strength

1020 - 1100 MPa

Show Supplier Material materials with Yield strength of 1020 - 1100 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

100 °C

1.15e-05 1/K

Show Supplier Material materials with Coefficient of thermal expansion of 1.15e-05 1/K

for 20°C to the mentioned temperature

200 °C

1.25e-05 1/K

Show Supplier Material materials with Coefficient of thermal expansion of 1.25e-05 1/K

for 20°C to the mentioned temperature

300 °C

1.33e-05 1/K

Show Supplier Material materials with Coefficient of thermal expansion of 1.33e-05 1/K

for 20°C to the mentioned temperature

400 °C

1.39e-05 1/K

Show Supplier Material materials with Coefficient of thermal expansion of 1.39e-05 1/K

for 20°C to the mentioned temperature

Specific heat capacity

430 J/(kg·K)

Show Supplier Material materials with Specific heat capacity of 430 J/(kg·K)

Thermal conductivity

41.5 W/(m·K)

Show Supplier Material materials with Thermal conductivity of 41.5 W/(m·K)

Electrical

PropertyValue

Electrical resistivity

1.9e-07 Ω·m

Show Supplier Material materials with Electrical resistivity of 1.9e-07 Ω·m

Chemical properties

PropertyValue

Aluminium

0.025 - 0.05 %

Show Supplier Material materials with Aluminium of 0.025 - 0.05 %

Carbon

0.2 - 0.26 %

Show Supplier Material materials with Carbon of 0.2 - 0.26 %

Chromium

0.4 - 0.6 %

Show Supplier Material materials with Chromium of 0.4 - 0.6 %

Copper

0.2 %

Show Supplier Material materials with Copper of 0.2 %

Iron

Balance

Manganese

1.1 - 1.4 %

Show Supplier Material materials with Manganese of 1.1 - 1.4 %

Molybdenum

0.5 - 0.6 %

Show Supplier Material materials with Molybdenum of 0.5 - 0.6 %

Nickel

0.9 - 1.1 %

Show Supplier Material materials with Nickel of 0.9 - 1.1 %

Nitrogen

0.012 %

Show Supplier Material materials with Nitrogen of 0.012 %

Phosphorus

0.02 %

Show Supplier Material materials with Phosphorus of 0.02 %

Silicon

0.25 %

Show Supplier Material materials with Silicon of 0.25 %

Sulfur

0.015 %

Show Supplier Material materials with Sulfur of 0.015 %

Technological properties

Property
Application areas

It is used for various chains in Automotive accessories, Mechanical engineering and Mining.

Heat Treatment

Soft annealing: 650-720°C, Spheroidizing: 650-720°C, Quenching 850-890°C (Water), Tempering: Min.400°C (Air)

Hot forming

It is formable at 850-1100°C and should then cooled slowly.

Processing history

Quenched and Tempered

Welding

It is usually weldable.