AISI 1039 Carbon Steel (UNS G10390)

Sep 19 2012

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations

Introduction

Carbon steels are those that have carbon as the chief alloying element. They contain up to 0.4% silicon and 1.2% manganese. The residual elements such as copper, molybdenum, aluminium, chromium and nickel are also present in these steels.

Chemical Composition

The chemical composition of AISI 1039 carbon steel is outlined in the following table.

Element Content (%)
Iron, Fe 98.47-98.94
Manganese, Mn 0.70-1
Carbon, C 0.360-0.440
Phosphorous, P ≤ 0.040
Sulfur, S ≤ 0.050

Physical Properties

The physical properties of AISI 1039 carbon steel are tabulated below.

Properties Metric Imperial
Density (chemical composition of 0.435% C, 0.69% Mn, 0.20% Si, annealed at 860°C (1580°F)) 7.845 g/cm3 0.2834 lb/in3

Mechanical Properties

The following table shows mechanical properties of AISI 1039 carbon steel.

Properties Metric Imperial
Tensile strength, ultimate 605 MPa 87700 psi
Tensile strength, yield 510 MPa 74000 psi
Modulus of elasticity 190-210 GPa 29700-30458 ksi
Bulk modulus (typical for steel) 140 GPa 20300 ksi
Shear modulus (typical for steel) 80 GPa 11600 ksi
Poissons ratio 0.27-0.30 0.27-0.30
Elongation at break 12% 12%
Reduction of area 35% 35%
Hardness, Brinell 179 179
Hardness, Knoop (converted from Brinell Hardness) 204 204
Hardness, Vickers (converted from Brinell Hardness) 187 187

Thermal Properties

The thermal properties of AISI 1039 carbon steel are given in the following table.

Properties Conditions
T (°C) Treatment
Thermal conductivity 50.7 W/mK 100 -

Other Designations

Other designations that are equivalent to AISI 1039 carbon steel include the following:

  • AFNOR 35 M5
  • DIN 1.1157
  • B.S.120 M 36
  • B.S.150 M 36
  • B.S.CDS 105/106
  • ASTM A29
  • ASTM A510
  • ASTM A546
  • ASTM A576
  • SAE J403
  • SAE J412
  • SAE J414

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