AISI 1330 Alloy Steel (UNS G13300)

Topics Covered

Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations


The Alloy steels family contains a wide variety of steels having compositions which exceed the limitations of Mn, C, Mo, Si, Ni, Va, and B set for carbon steels. They are designated by AISI four-digit numbers.

The first two digits represent the main alloying elements, and the last two digits indicate the carbon content present in the alloy in hundredth of a percent.

The following datasheet gives an overview of AISI 1330 alloy steel.

Chemical Composition

The following table shows the chemical composition of AISI 1330 alloy steel.

Element Content (%)
Iron, Fe 97.35 - 97.97
Manganese, Mn 1.60 - 1.90
Carbon, C 0.280 - 0.330
Silicon, Si 0.15 - 0.35
Sulfur, S ≤ 0.040
Phosphorous, P ≤ 0.035

Physical Properties

The physical properties of AISI 1330 alloy steel are tabulated below.

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

Mechanical Properties

The mechanical properties of AISI 1330 alloy steel are outlined in the following table.

Properties Metric Imperial
Bulk modulus (typical for steel) 140 GPa 20300 ksi
Shear modulus (typical for steel) 80 GPa 11600 ksi
Elastic modulus 190-210 GPa 27557-30458 ksi
Poisson's ratio 0.27-0.30 0.27-0.30
Hardness, Brinell (average) 179 - 335 179 - 335
Hardness, Knoop (converted from Brinell hardness) 282 282
Hardness, Rockwell B (converted from Brinell hardness) 98 98
Hardness, Rockwell C (converted from Brinell hardness) 25 25
Hardness, Vickers (converted from Brinell hardness) 271 271
Machinability (based on 100 machinability for AISI 1212 steel.) 55 55

Thermal Properties

The thermal properties of AISI 1330 alloy steel are given 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 1330 alloy steel include:

  • ASTM A322
  • ASTM A331
  • ASTM A519
  • MIL SPEC MIL-S-16974
  • SAE J404
  • SAE J412
  • SAE J770

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