SAE 1040 UNS G10400 GB/T 40# Carbon Steel-Carbon Steel-HAIXIANG METAL TECHNOLOGY (HANGZHOU) CO., LTD.

SAE 1040 UNS G10400 GB/T 40# Carbon Steel

Prouduct name: SAE 1040 UNS G10400 GB/T 40# Carbon Steel

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

Popular in these Categories: Carbon Steel

Online

Contact: +86-0571-86628016

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.

Element	Content (%)
Iron, Fe	98.6-99
Manganese, Mn	0.60-0.90
Carbon, C	0.370-0.440
Sulfur, S	≤ 0.050
Phosphorous, P	≤ 0.040

Physical Properties

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

Properties	Metric	Imperial
Density (chemical composition of 0.435% C, 0.69% Mn, 0.20% Si, annealed at 860°C (1580°F))	7.845 g/cc	0.2834 lb/in³
Melting point	1521°C	2770°C

Mechanical Properties

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

Properties	Metric	Imperial
Tensile strength	620 MPa	89900 psi
Yield strength	415 MPa	60200 psi
Bulk modulus (typical for steels)	140 GPa	20300 ksi
Shear modulus (typical for steels)	80 GPa	11600 ksi
Elastic modulus	190-210 GPa	27557-30458 ksi
Poisson’s ratio	0.27-0.30	0.27-0.30
Elongation at break (in 50 mm)	25%	25%
Reduction of area	50%	50%
Hardness, Brinell	201	201
Hardness, Knoop (converted from Brinell hardness)	223	223
Hardness, Rockwell B (converted from Brinell hardness)	93	93
Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only)	13	13
Hardness, Vickers (converted from Brinell hardness)	211	211
Izod impact (annealed at 790°C (1450°F))	45 J	33.2 ft-lb
Izod impact (as rolled)	49 J	36.1 ft-lb
Izod impact (normalized at 900°C (1650°F)	65 J	47.9 ft-lb

Thermal Properties

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

Properties	Metric	Imperial
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°C	6.28 µin/in°F
Thermal conductivity (@ 100°C/212°F)	50.7 W/mK	352 BTU in/hr.ft².°F
Thermal conductivity (@ 0°C)	51.9 W/mK	360 BTU in/hr.ft².°F