AISI 1211 Carbon Steel (UNS G12110)

Topics Covered

Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations


Carbon steels are steels containing carbon as the chief alloying element. These steels contain aluminium, chromium, copper, nickel, and molybdenum in small quantities. They also contain 0.4% of silicon and 1.2% of manganese. Impurities such as phosphorous and sulfur are also present in these steels.

The datasheet given below will discuss in detail about AISI 1211 carbon steel.

Chemical Composition

The following table shows the chemical composition of AISI 1211 carbon steel.

Element Content (%)
Iron, Fe 98.7 - 99.23
Manganese, Mn 0.60 - 0.90
Carbon, C  0.13
Sulfur, S 0.10 - 0.15
Phosphorous, P 0.070 - 0.12

Physical Properties

The physical properties of AISI 1211 carbon steel are tabulated below.

Properties Metric Imperial
Density 7.87 g/cm3 0.284 lb/in³

Mechanical Properties

The mechanical properties of cold drawn AISI 1211 carbon steel are outlined in the following table.

Properties Metric Imperial
Tensile strength 515 MPa 74700 psi
Yield strength 400 MPa 58000 psi
Bulk modulus (typical for steel) 140 GPa 20300 ksi
Shear modulus (typical for steel) 80.0 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 10% 10%
Reduction of area 35% 35%
Hardness, Brinell 163 163
Hardness, Knoop (converted from Brinell hardness) 184 184
Hardness, Rockwell B (converted from Brinell hardness) 84 84
Hardness, Vickers (converted from Brinell hardness) 170 170
Machinability (based on 100 machinability for AISI 1212 steel.) 95 95

Thermal Properties

The thermal properties of AISI 1211 carbon steel are given in the following table.

Properties Metric English
Thermal expansion co-efficient (@ 20°C/68°F, typical steel) 11.5 µm/m°C 6.39 µin/in°F
Thermal conductivity (typical for steel) 51.9 W/mK 360 BTU in/hr.ft.°F

Other Designations

Other designations that are equivalent to AISI 1211 carbon steel include:

  • ASTM A108
  • ASTM A29
  • FED QQ-S-637 (1211)
  • SAE J403


AISI 1211 carbon steel is used in screw machine operations.

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