Jul 31 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Introduction
Carbon steels are a category of steel containing 0.12 to 2% carbon. When the percentage of carbon content increases, hardness and strength of these steels increase with heat treatment, but lose a little amount of their ductility.
AISI 1044 carbon steel is medium-carbon steel that can be heat treated, flame or induction hardened. It is recommended that carburizing or cyaniding be avoided.
The following sections will discuss AISI 1044 carbon steel in futher detail.
Chemical Composition
The chemical composition of AISI 1044 carbon steel is outlined in the following table.
|
Element |
Content (%) |
|
Carbon, C |
0.43-0.50 |
|
Manganese, Mn |
0.30-0.60 |
|
Sulfur, S |
0.05 (max) |
|
Phosphorous, P |
0.04 (max) |
|
Iron, Fe |
Balance |
Physical Properties
The physical properties of AISI 1044 carbon steel are tabulated below.
|
Properties |
Metric |
Imperial |
|
Density |
7.85 g/cm3 |
0.284 lb/in3 |
Mechanical Properties
The following table shows mechanical properties of cold rolled AISI 1044 carbon steel.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
550 MPa |
79800 psi |
|
Yield strength |
310 MPa |
45000 psi |
|
Modulus of elasticity |
205 GPa |
29700 ksi |
|
Shear modulus (typical for steel) |
80 GPa |
11600 ksi |
|
Poisson’s ratio |
0.29 |
0.29 |
|
Elongation at break (in 50 mm) |
16% |
16% |
|
Hardness, Brinell |
163 |
163 |
|
Hardness, Knoop (converted from Brinell hardness) |
184 |
184 |
|
Hardness, Rockwell B (converted from Brinell hardness) |
84 |
84 |
|
Hardness, Vickers (converted from Brinell hardness) |
170 |
170 |
Thermal Properties
The thermal properties of cold rolled AISI 1044 carbon steel are given in the following table.
|
Properties |
Metric |
Imperial |
|
Thermal conductivity |
49.8 W/mK |
346 BTU in/hr.ft2.°F |
|
Thermal expansion co-efficient (at 0.000-100°C/32-212°F) |
11.5 µm/m°C |
6.39 µm/m°C |
Other Designations
Other designations that are equivalent to AISI 1044 carbon steel include the following.
|
ASTM A29 |
ASTM A510 |
ASTM A575 |
ASTM A576 |
|
SAE J403 |
SAE J412
|
SAE J414
|
|