Sep 27 2012
Topics Covered
Introduction
Chemical Composition
Physical properties
Mechanical Properties
Other Designations
Introduction
Alloy steels comprise different kinds of steels which exceed the composition limits of Mn, C, Mo, Si, Ni, Va, and B set for carbon steels. They respond well to mechanical and heat treatments. They 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.
The following datasheet gives an overview of AISI A514 grade A alloy steel, which has high yield strength.
Chemical Composition
The following table shows the chemical composition of AISI A514 grade A alloy steel.
|
Element |
Content (%) |
|
Iron, Fe |
97 |
|
Manganese, Mn |
0.95 |
|
Chromium, Cr |
0.65 |
|
Silicon, Si |
0.6 |
|
Molybdenum, Mo |
0.23 |
|
Carbon, C |
0.15 - 0.210 |
|
Zirconium, Zr |
0.1 |
|
Boron, B |
0.00250 |
Physical properties
The physical properties of AISI A514 grade A alloy steel are highlighted in the following table.
|
Properties |
Metric |
Imperial |
|
Density |
7.85 g/cm3 |
0.284 lb/in³ |
Mechanical Properties
The following table outlines the mechanical properties of AISI A514 grade A alloy steel.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
760 - 895 MPa |
110000 - 130000 psi |
|
Yield strength (@ strain 0.200%) |
690 MPa |
100000 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 (in 50 mm) |
18% |
18% |
|
Hardness, Brinell (@ thickness 9.50 mm/0.374 in, for plates) |
235 - 293 |
235 - 293 |
|
Hardness, Knoop (converted from Brinell hardness) |
289 |
289 |
|
Hardness, Rockwell B (converted from Brinell hardness) |
98 |
98 |
|
Hardness, Rockwell C (converted from Brinell hardness) |
26 |
26 |
|
Hardness, Vickers (converted from Brinell hardness) |
278 |
278 |
Other Designations
Other designations that are equivalent to AISI A514 grade A alloy steel include:
-
AMS 6386 (1)
-
ASTM A514 (A)
-
ASTM A517 (A)
-
ASTM A592 (A)