AISI 1215 Carbon Steel (UNS G12150)

Topics Covered

Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations


Carbon steels are designated by AISI four-digit numbers. They contain carbon as the significant alloying element. Small quantities of molybdenum, chromium, nickel, aluminium, and copper are present in these steels. They also contain 0.4% silicon and 1.2% manganese.

The datasheet given below provides an overview of AISI 1215 carbon steel.

Chemical Composition

The chemical composition of AISI 1215 carbon steel is tabulated below.

Element Content (%)
Iron, Fe 98.42 - 98.95
Manganese, Mn 0.75 - 1.05
Sulfur, S 0.260 - 0.35
Carbon, C  0.090
Phosphorous, P 0.040 - 0.090

Physical Properties

The following table shows the physical properties of AISI 1215 carbon steel.

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

Mechanical Properties

The mechanical properties of the cold drawn AISI 1215 carbon steel are given in the following table.

Properties Metric Imperial
Tensile strength 540 MPa 78300 psi
Yield strength 415 MPa 60200 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 167 167
Hardness, Knoop (converted from Brinell hardness) 188 188
Hardness, Rockwell B (converted from Brinell hardness) 85 85
Hardness, Vickers (converted from Brinell hardness) 175 175
Machinability (Based on 100 machinability for AISI 1212 steel.) 140 140

Thermal Properties

The thermal properties of AISI 1215 carbon steel are outlined in the following table.

Properties Metric Imperial
Thermal expansion co-efficient (@ 20°C/68°F, typical steel) 11.5 µm/m°C 6.39 µin/in°F
Thermal conductivity (typical steel) 51.9 W/mK 360 BTU in/hr.ft².°F

Other Designations

Other designations that are equivalent to AISI 1215 carbon steel include:

  • AMS 5010
  • ASTM A108
  • ASTM A29
  • ASTM A576
  • SAE J403
  • SAE J412


  1. Steven Williams Steven Williams United States says:

    Does anyone know how magnetic AISI 1215 is we have a bundle of Ø4" bars that have sit on our shelf for over 15 years and was wondering why its not a very magnetic steel. where as we use a lot of AISI 12L14 and it is very magnetic.

    • yehiel dahan yehiel dahan Israel says:

      the annealing of the steel greatly increases its magnetic permeability.
      in other words, if it's heat-tempered at about 2500F it will stick to a magnet.

  2. Javier Landa Javier Landa Mexico says:

    Does anyone know if this material is the equivalent for this number (11SMn30+C (1.0715))???? Thanks!

  3. Ashok Reddy Ashok Reddy India says:

    what are the resistance coatings used to steel 1215 can any one  give their value answer

  4. Puneet Sabharwal Puneet Sabharwal Netherlands says:

    How durable is AISI 1213 carbon steel can any one give answer ??

  5. Megha Rout Megha Rout India says:

    what is the electrical resistivity of carbon 1215

  6. Abish Joseph Abish Joseph Saudi Arabia says:

    Could you please tell me where i can buy below material in Saudi Arabia.

    Usage this Material for AXIAL LOAD Weight for Bearing Analyzer inspection it's material steel P/N: A.I.S.I.C-1215                                                                                                     Size  Dia :5.200"   Long :1.700"

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