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ISO C40E4 SKTM14C EN C40 W.Nr 1.0511 Carbon Steel

Prouduct name: ISO C40E4 SKTM14C EN C40 W.Nr 1.0511 Carbon Steel

abstract: ISO C40E4 SKTM14C EN C40 W.Nr 1.0511 AISI 1040 Carbon Steel AISI 1040 carbon steel has high carbon c···

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ISO C40E4 SKTM14C EN C40 W.Nr 1.0511 AISI 1040 Carbon Steel

AISI 1040 carbon steel has high carbon content and can be hardened by heat treatment followed by quenching and tempering to achieve 150 to 250 ksi tensile strength.

The following datasheet gives an overview of AISI 1040 carbon steel.

Chemical Composition

The following table shows the chemical composition of AISI 1040 carbon steel.

ElementContent (%)
Iron, Fe98.6-99
Manganese, Mn0.60-0.90
Carbon, C0.370-0.440
Sulfur, S≤ 0.050
Phosphorous, P≤ 0.040

Physical Properties

The physical properties of AISI 1040 carbon steel are tabulated below.

PropertiesMetricImperial
Density (chemical composition of 0.435% C, 0.69% Mn, 0.20% Si, annealed at 860°C (1580°F))7.845 g/cc0.2834 lb/in³
Melting point1521°C2770°C

Mechanical Properties

The mechanical properties of AISI 1040 carbon steel are outlined in the following table.

PropertiesMetricImperial
Tensile strength620 MPa89900 psi
Yield strength415 MPa60200 psi
Bulk modulus (typical for steels)140 GPa20300 ksi
Shear modulus (typical for steels)80 GPa11600 ksi
Elastic modulus190-210 GPa27557-30458 ksi
Poisson’s ratio0.27-0.300.27-0.30
Elongation at break (in 50 mm)25%25%
Reduction of area50%50%
Hardness, Brinell201201
Hardness, Knoop (converted from Brinell hardness)223223
Hardness, Rockwell B (converted from Brinell hardness)9393
Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only)1313
Hardness, Vickers (converted from Brinell hardness)211211
Izod impact (annealed at 790°C (1450°F))45 J33.2 ft-lb
Izod impact (as rolled)49 J36.1 ft-lb
Izod impact (normalized at 900°C (1650°F)65 J47.9 ft-lb

Thermal Properties

The thermal properties of AISI 1040 carbon steel are given in the following table.

PropertiesMetricImperial
Thermal expansion co-efficient (@ 20-100°C/68-212°F, composition of 0.40% C, 0.11% Mn, 0.01% P, 0.03% S, 0.03% Si, 0.03% Cu)11.3 µm/m°C6.28 µin/in°F
Thermal conductivity (@ 100°C/212°F)50.7 W/mK352 BTU in/hr.ft².°F
Thermal conductivity (@ 0°C)51.9 W/mK360 BTU in/hr.ft².°F

 

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