Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Introduction
Alloy steels are designated by AISI four-digit numbers. The first two digits represent the main alloying elements, and the last two digits represent the carbon content present in the alloy in hundredth of a percent. They comprise different kinds of steels which exceed the composition limits of Mn, C, Mo, Si, Ni, Va, and B in the carbon steels. They respond more quickly to mechanical and heat treatments than the carbon steels.
The following datasheet wifocuses on AISI 5130 alloy steel in more detail.
Chemical Composition
The following table shows the chemical composition of AISI 5130 alloy steel.
|
Element |
Content (%) |
|---|---|
|
Iron, Fe |
97.295 – 98.07 |
|
Chromium, Cr |
0.800 – 1.10 |
|
Manganese, Mn |
0.700 – 0.900 |
|
Carbon, C |
0.280 – 0.330 |
|
Silicon, Si |
0.150 – 0.300 |
|
Sulfur, S |
0.0400 |
|
Phosphorous, P |
0.0350 |
Physical Properties
The physical properties of AISI 5130 alloy steel are tabulated below.
|
Properties |
Metric |
Imperial |
|---|---|---|
|
Density |
7.83 g/cm3 |
0.283 lb/in³ |
Mechanical Properties
The mechanical properties of AISI 5130 alloy steel are outlined in the following table.
|
Properties |
Metric |
Imperial |
|---|---|---|
|
Bulk modulus (typical for steel) |
140 GPa |
20300 ksi |
|
Shear modulus (typical for steel) |
80 GPa |
11600 ksi |
|
Elastic modulus |
190-210 GPa |
27557-30458 ksi |
|
Poisson’s ratio |
0.27-0.30 |
0.27-0.30 |
|
Hardness, Brinell (annealed) |
170 |
170 |
|
Hardness, Brinell (normalized) |
241 |
241 |
|
Hardness, Knoop (converted from Brinell hardness) |
191 |
191 |
|
Hardness, Rockwell B (converted from Brinell hardness) |
86 |
86 |
|
Hardness, Vickers (converted from Brinell hardness) |
178 |
178 |
|
Machinability (annealed and cold drawn. Based on 100 machinability for AISI 1212 steel) |
70 |
70 |
Thermal Properties
The thermal properties of AISI 5130 alloy steel are given in the following table.
|
Properties |
Metric |
Imperial |
|---|---|---|
|
Thermal conductivity (typical steel) |
46.6 W/mK |
323 BTU in/hr.ft².°F |
Other Designations
Other designations that are equivalent to AISI 5130 alloy steel include:
-
ASTM A322 -
ASTM A331 -
ASTM A505 -
ASTM A519 -
SAE J404 -
SAE J412 -
SAE J770
