AISI 1074 Carbon Steel (UNS G10740)

Topics Covered

Chemical Composition
Physical Properties
Mechanical Properties
Other Designations


Carbon steels are designated by AISI four-digit numbers. They contain only carbon as the major alloying element. 1.2% of manganese, and 0.4% of silicon are present in these steels. They also contain chromium, nickel, copper, aluminium, and molybdenum in small amount. Impurities such as sulfur and phosphorous are also found in these steels.

The following datasheet will discuss in detail about AISI 1074 carbon steel.

Chemical Composition

The following table shows the chemical composition of AISI 1074 carbon steel.

Element Content (%)
Carbon, C 0.70-0.80
Manganese, Mn 0.50-0.80
Sulfur, S 0.05 (max)
Phosphorous, P 0.04 (max)

Physical Properties

The physical properties of AISI 1074 carbon steel are tabulated below.

Properties Metric Imperial
Density 7.7-8.03g/cm3 0.278- 0.290 lb/in3

Mechanical Properties

The mechanical properties of AISI 1074 carbon steel are outlined in the following table.

Properties Metric Imperial
Tensile strength 650 MPa 94275 psi
Yield strength 505 MPa 73244 psi
Elastic modulus 190-210 GPa 27557-30458 ksi
Poisson's ratio 0.27-0.30 0.27-0.30
Elongation at break 10% 10%
Reduction of area 40% 40%
Hardness 192 192

Other Designations

Other designations that are equivalent to AISI 1074 carbon steel include:

  • AMS 5120
  • ASTM A29
  • ASTM A510
  • ASTM A682
  • ASTM A713
  • ASTM A830
  • DIN 1.1248
  • MIL S-46049
  • QQ S700 (C1074)
  • SAE J1397
  • SAE J403
  • SAE J412
  • SAE J414
  • AMS 5120D
  • AMS 5120F

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