AISI 1090 Carbon Steel (UNS G10900)

Sep 21 2012

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations

Introduction

Steels containing carbon as the chief alloying element are known as carbon steels. They contain 0.4% of silicon and 1.2% of manganese. Molybdenum, chromium, nickel, copper, and aluminium are also found in traces. AISI 1090 carbon steel has high strength and wear resistance.

The following datasheet will discuss in detail about AISI 1090 carbon steel.

Chemical Composition

The following table shows the chemical composition of AISI 1090 carbon steel.

Element Content (%)
Iron, Fe 98.03 - 98.55
Carbon, C 0.85 - 0.980
Manganese, Mn 0.60 - 0.90
Sulfur, S ≤ 0.050
Phosphorous, P ≤ 0.040

Physical Properties

The physical properties of AISI 1090 carbon steel are tabulated below.

Properties Metric Imperial
Density 7.85 g/cm3 0.284 lb/in³

Mechanical Properties

The mechanical properties of cold drawn AISI 1090 carbon steel are outlined in the following table.

Properties Metric Imperial
Tensile strength 696 MPa 101000 psi
Yield strength 540 MPa 78300 psi
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
Elongation at break (in 50 mm) 10% 10%
Reduction of area 40% 40%
Hardness, Brinell 197 197
Hardness, Knoop (converted from Brinell hardness) 219 219
Hardness, Rockwell B (converted from Brinell hardness) 92 92
Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only) 13 13
Hardness, Vickers (converted from Brinell hardness) 207 207

Thermal Properties

The thermal properties of AISI 1090 carbon steel are given in the following table.

Properties Metric Imperial
Thermal conductivity (typical steel) 49.8 W/mK 346 BTU in/hr.ft².°F

Other Designations

Other designations that are equivalent to AISI 1090 carbon steel include:

  • AMS 5112
  • ASTM A29 (1090)
  • ASTM A510 (1090)
  • ASTM A576 (1090)
  • ASTM A713 (1090)
  • ASTM A830
  • SAE J1397 (1090)
  • SAE J403 (1090)
  • SAE J412 (1090)
  • AMS 5112E
  • SAE J414

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