Sep 20 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Other Designations
Introduction
Low-carbon mold steels or group P steels are of several types that
include P2, P3, P4, P5, P6, P20, and P21 steels. Chromium and nickel
are the main alloying elements found in group P steels.
P6 steels are carburizing steels manufactured according to tool
steel quality standards and are commonly available in the market. The
sections below provide an overview of P6 tool steels.
Chemical Composition
The chemical composition of P6 tool steels is outlined in the
following table. .
| Element |
Content
(%) |
Fe
|
93%
|
| C |
0.05-0.15 |
| Mn |
0.35-0.70 |
| Si |
0.10-0.40 |
| Cr |
1.25-1.75 |
| Ni |
3.25-3.75 |
| Cu |
0.25 |
| P |
0.03 |
| S |
0.03 |
Physical Properties
The following table shows the physical properties of P6 tool steels.
| Properties |
Metric |
Imperial |
| Density |
7.85 g/cm3 |
0.284 lb/in3 |
Mechanical Properties
The mechanical properties of P6 tool steels are displayed in the
following table.
| Properties |
Metric |
Imperial |
| Hardness, Rockwell C |
58.0-64.0 |
58.0-64.0 |
| Poisson's ratio |
0.27-0.30 |
0.27-0.30 |
| Elastic modulus |
190-210 GPa |
27557-30457 ksi |
Other Designations
Equivalent materials to P6 tool steels are:
- DIN 1.2735
- ASTM A681
- UNS T51606