 |
 |
 |
Metal Alloys |
|
Alloy Home |
|
Steels |
|
Tool Steels |
|
General Information |
| Properties | |
| Tool Steel Types |
|
High-Speed |
|
Hot-Work |
|
Cold-Work |
|
Shock-Resistant |
|
Mold |
|
Special-Purpose |
|
Water-Hardening |
|
Tool Steel List |
| AISI Ax | |
| AISI Dx | |
| AISI Hx | |
| AISI Lx | |
| AISI Mx | |
| AISI Ox | |
| AISI Px | |
| AISI Sx | |
| AISI Tx | |
| AISI Wx | |
|
Specific Tool Steel |
|
General Information |
|
Resources |
|
Bibliography |
| AISI H42 | |
 | |
| Category | Steel |
| Class | Tool steel |
| Type | Molybdenum hot work steel |
| Designations | United States: ASTM A681 , FED QQ-T-570 , UNS T20842 |
| Composition | |
| |
| Element | Weight % |
| C | 0.55-0.70 |
| Mn | 0.15-0.40 |
| Cr | 3.75-4.50 |
| Ni | 0.3 |
| Mo | 4.50-5.50 |
| W | 5.50-6.75 |
| V | 1.75-2.20 |
| Cu | 0.25 |
| P | 0.03 |
| S | 0.03 |
| Mechanical Properties | |
| |
| Properties | Conditions | ||
| T (°C) | Treatment | ||
| Density (×1000 kg/m3) | 8.15 | 25 | |
| Poisson's Ratio | 0.27-0.30 | 25 | |
| Elastic Modulus (GPa) | 190-210 | 25 | |
| Thermal Properties | |
| |
Guide for high quality and cost-effective plastic injection molding.
Guide for those interested in becoming a mechanical engineer. Includes qualifications, pay, and job duties.
Information, coverage of important developments and expert commentary in manufacturing.
Wages, employment opportunities, and growth projections for STEM jobs.
