Jul 11 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Applications
Introduction
Proper heating of tool steels is essential for adequate performance, and the choice of tool steels depends on the impact loading and service conditions and cutting edge characteristics. Tool steels are used for special applications such as injection molding due to its abrasion resistance.
The following datasheet will provide an overview of grade M44 tool steel, which is a molybdenum high speed tool steel.
Chemical Composition
The chemical composition of M44 tool steels is outlined in the following table.
|
Element |
Content (%) |
|
Cobalt, Co |
11-12.25 |
|
Molybdenum, Mo |
6-7 |
|
Tungsten, W |
5-5.75 |
|
Chromium, Cr |
4-4.75 |
|
Vanadium, V |
1.85-2.2 |
|
Carbon, C |
1.10-1.20 |
|
Silicon, Si |
0.3-0.55 |
|
Nickel, Ni |
0.3 |
|
Copper, Cu |
0.25 |
|
Manganese, Mn |
0.2-0.4 |
|
Phosphorus, P |
0.03 |
|
Sulfur, S |
0.03 |
Physical Properties
The following table shows the physical properties of M44 tool steels.
|
Properties |
Metric |
Imperial |
|
Density |
7.7-8.03 g/cm3 |
0.278 – 0.290 lb/in3 |
Mechanical Properties
The mechanical properties of M44 tool steels are displayed in the following table.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
650-880 MPa |
94275-127633 psi |
|
Yield strength |
350-550 |
50763-79771 psi |
|
Modulus of elasticity |
190-210 GPa |
27557-30458 ksi |
|
Poisson’s ratio |
0.27-0.3 |
0.27-0.3 |
|
Elongation |
8-25% |
8-25% |
Thermal Properties
The thermal properties of M44 tool steels are given in the following table
|
Properties |
Metric |
Imperial |
|
Thermal conductivity |
25 W/mK |
173.3 BTU.in/hrft².°F |
Other Designations
The equivalent materials to M44 tool steels include:
Applications
M44 tool steels are chiefly used in aircraft and petrochemical industries.