Sep 13 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Other Designations
Introduction
Alloy steels contain elements such as chromium, cobalt, nickel. They comprise a wide range of steels with compositions that exceed the limitations of Si, Va, Cr, Ni, Mo, Mn, B and C allocated for carbon steels.
Alloy steels are used in specific melting and deoxidization processes for particular kind of applications. When compared to carbon steels, alloy steels are a lot more responsive to mechanical and heat treatments.
The following datasheet provides an overview of AISI A387 grade 12-PVQ alloy steel.
Chemical Composition
The chemical composition of AISI A387 grade 12-PVQ alloy steel is outlined in the following table.
Element |
Content (%) |
Iron, Fe |
96.96-98.15 |
Chromium, Cr |
0.80-1.15 |
Molybdenum, Mo |
0.45-0.60 |
Manganese, Mn |
0.40-0.65 |
Silicon, Si |
0.15-0.40 |
Carbon, C |
0.050-0.17 |
Phosphorous, P |
0.035 |
Sulfur, S |
0.035 |
Physical Properties
The following table shows the physical properties of AISI A387 grade 12-PVQ alloy steel.
Properties |
Metric |
Imperial |
Density |
7.7-8.03 g/cm3 |
0.278-0.290 lb/in3 |
Mechanical Properties
The mechanical properties of AISI A387 grade 12-PVQ alloy steel are displayed in the following table.
Properties |
Metric |
Imperial |
Tensile strength |
450-585 MPa |
65300-84800 psi |
Yield strength |
275 MPa |
39900 psi |
Rupture strength (@575°C, time 3.60e+8 sec/1070°F, time 100000 hour) |
34.0-45.0 MPa |
4930-6530 psi |
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) |
22.00% |
22.00% |
Other Designations
Equivalent material to AISI A387 grade 12-PVQ alloy steel include DIN 1.7335.