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Description

GB/T 699-1999 Grade 45 is a quality carbon structural steel that is widely used in mechanical manufacturing applications and high-strength moving parts.

Equivalent Materials

This material data has been provided by Matmatch.

"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

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Properties

General

PropertyTemperatureValueComment

Density

23.0 °C

7.8 - 7.9 g/cm³

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Typical for Medium Carbon Steel

Mechanical

PropertyTemperatureValueComment

Elastic modulus

23.0 °C

200 - 215 GPa

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Typical for Medium Carbon Steel

Elongation A5

23.0 °C

16 %

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Poisson's ratio

23.0 °C

0.29 [-]

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Typical for Medium Carbon Steel

Reduction of area

23.0 °C

40 %

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Shear modulus

23.0 °C

75 - 80 GPa

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Typical for Carbon Steel

Tensile strength

23.0 °C

600 MPa

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Yield strength

23.0 °C

355 MPa

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Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

23.0 °C

1.32E-5 1/K

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Typical for Medium Carbon Steel

Max service temperature

500 °C

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Typical for Carbon Steel

Melting point

1380 - 1514 °C

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Typical for Medium Carbon Steel

Specific heat capacity

23.0 °C

470 - 520 J/(kg·K)

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Typical for Medium Carbon Steel

Thermal conductivity

23.0 °C

21 - 52 W/(m·K)

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Typical for Medium Carbon Steel

Electrical

PropertyTemperatureValueComment

Electrical resistivity

23.0 °C

1.43E-7 - 1.74E-7 Ω·m

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Typical for Carbon Steel

Chemical properties

PropertyValue

Carbon

0.42 - 0.5 %

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Chromium

0 - 0.25 %

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Copper

0 - 0.25 %

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Iron

Balance

Manganese

0.5 - 0.8 %

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Nickel

0 - 0.3 %

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Phosphorus

0 - 0.04 %

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Silicon

0.17 - 0.37 %

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Sulfur

0 - 0.035 %

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Looking for suppliers of this material? Click to see 3 supplier of GB/T 45 on Matmatch