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Carbon Steel 1040

Metal

Carbon Steel 1040

AISI 1040 | 1.0511 | C40

ProcessCNC Machining

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* Property values are for reference and may vary by alloy, temper, and processing conditions.

rbon steel 1040 is a medium-carbon steel suitable for load-bearing components. Its strength and wear resistance significantly exceed those of low-carbon steel, and it can achieve higher, more uniform strength and toughness through heat treatment (quenching and tempering). It is particularly well-suited for mechanical parts subjected to high stress and wear.

Material Properties

Mechanical Properties

  • Yield strength

    350 - 415 MPa

  • Tensile strength

    550 – 650 MPa

  • Elongation

    18 - 25%

  • Hardness

    170 - 210 HB

  • Young's modulus

    190 - 205 GPa

Thermal properties

  • Maximum operating temperature

    400 - 450°C

  • Thermal conductivity

    49.8 - 51.9 W/m·K(20°C)

  • Coefficient of thermal expansion

    11.3 - 12.5 μm/m·K(20-100°C)

Physical Properties

  • Density

    7.87 g/cm³

Electrical properties

  • Electrical resistivity

    0.17 - 0.18 μΩ·m(20°C)

Manufacturability

  • Manufacturability-Corrosion resistance

    Poor

  • Manufacturability-Weldability

    Moderate

Shenzhen

Building A, Jinsheng Finance Building, No. 217 Nanhuan Road, Bao'an District.

Hong Kong

MAKE DIRECT HOLDINGS LIMITED Unit 1111, 11/F, Hollywood Plaza, 610 Nathan Road, Mong Kok, Kowloon, Hong Kong