Jun 17 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Introduction
Steels that contain specific amounts of alloying elements other than carbon and common elements such as phosphorus, sulfur, silicon, copper and manganese are known as alloy steels. Alloying elements are added to change mechanical or physical properties. However, carbon content and alloying elements influence the overall characteristics of alloy steels.
The following datasheet will provide an overview of AISI 8750 alloy steel.
Chemical Composition
The chemical composition AISI 8750 alloy steels is outlined in the following table.
|
Element |
Content (%) |
|
Manganese, Mn |
≤0.75-1 |
|
Carbon, C |
≤0.48-0.53 |
|
Nickel, Ni |
≤0.4-0.7 |
|
Chromium, Cr |
0.4-0.6 |
|
Silicon, Si |
≤0.2-0.35 |
|
Molybdenum, Mo |
0.2-0.3 |
|
Phosphorus, P |
≤0.04 |
|
Sulfur, S |
≤0.04 |
Physical Properties
The following table shows the physical properties of AISI 8750 alloy steels.
|
Properties |
Metric |
Imperial |
|
Density |
7.75 g/cm3 |
0.280 lb/in3 |
Mechanical Properties
The mechanical properties of AISI 8750 alloy steels are displayed in the following table.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
1476 MPa |
214100 psi |
|
Yield strength (@strain 0.2%) |
1338 MPa |
194100 psi |
|
Modulus of elasticity |
201-209 GPa |
29200-30300 ksi |
|
Bulk modulus |
160-170 GPa |
23200-24700 ksi |
|
Shear modulus |
81-82 GPa |
11700-11900 ksi |
|
Poisson’s ratio |
0.27-0.30 |
0.27-030 |
|
Elongation at break |
12% |
12% |
|
Hardness, Brinell |
423 |
423 |
Thermal Properties
The thermal properties of AISI 8750 alloy steels are given in the following table
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient |
≥14.8 µm/m°C |
≥8.22 µin/in°F |
|
Thermal conductivity |
≥37.6 W/mK |
≥261 BTU.in/hrft².°F |