Sep 13 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Introduction
Carbon steels are designated by AISI four-digit numbers. They contain carbon as the significant alloying element. Small quantities of molybdenum, chromium, nickel, aluminium, and copper are present in these steels. They also contain 0.4% silicon and 1.2% manganese.
The datasheet given below provides an overview of AISI 1215 carbon steel.
Chemical Composition
The chemical composition of AISI 1215 carbon steel is tabulated below.
|
Element |
Content (%) |
|
Iron, Fe |
98.42 - 98.95 |
|
Manganese, Mn |
0.75 - 1.05 |
|
Sulfur, S |
0.260 - 0.35 |
|
Carbon, C |
0.090 |
|
Phosphorous, P |
0.040 - 0.090 |
Physical Properties
The following table shows the physical properties of AISI 1215 carbon steel.
|
Properties |
Metric |
Imperial |
|
Density |
7.87 g/cm3 |
0.284 lb/in³ |
Mechanical Properties
The mechanical properties of the cold drawn AISI 1215 carbon steel are given in the following table.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
540 MPa |
78300 psi |
|
Yield strength |
415 MPa |
60200 psi |
|
Bulk modulus (typical for steel) |
140 GPa |
20300 ksi |
|
Shear modulus (typical for steel) |
80.0 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 |
10% |
10% |
|
Reduction of area |
35% |
35% |
|
Hardness, Brinell |
167 |
167 |
|
Hardness, Knoop (converted from Brinell hardness) |
188 |
188 |
|
Hardness, Rockwell B (converted from Brinell hardness) |
85 |
85 |
|
Hardness, Vickers (converted from Brinell hardness) |
175 |
175 |
|
Machinability (Based on 100 machinability for AISI 1212 steel.) |
140 |
140 |
Thermal Properties
The thermal properties of AISI 1215 carbon steel are outlined 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 1215 carbon steel include:
-
AMS 5010
-
ASTM A108
-
ASTM A29
-
ASTM A576
-
SAE J403
-
SAE J412