Sep 19 2012
Topics Covered
IntroductionChemical CompositionPhysical PropertiesMechanical PropertiesThermal PropertiesOther 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