| AISI L6 | |
 | |
| Category | Steel |
| Class | Tool steel |
| Type | Low-alloy special-purpose tool steel |
| Designations | United States: UNS T61206 |
| Composition | |
| |
| Element | Weight % |
| C | 0.65-0.75 |
| Mn | 0.25-0.80 |
| Si | 0.50 |
| Cr | 0.60-1.20 |
| Ni | 1.25-2.00 |
| Mo | 0.50 |
| V | 0.20-0.30(a) |
| Cu | 0.25 |
| P | 0.03 |
| S | 0.03 |
| Mechanical Properties | |
| |
| Properties | Conditions | ||
| T (°C) | Treatment | ||
| Density (×1000 kg/m3) | 7.86 | 25 | |
| Poisson's Ratio | 0.27-0.30 | 25 | |
| Elastic Modulus (GPa) | 190-210 | 25 | |
| Tensile Strength (Mpa) | 655 | 25 | annealed more |
| Yield Strength (Mpa) | 380 | ||
| Elongation (%) | 25 | ||
| Reduction in Area (%) | 55 | ||
| Hardness (HRB) | 93 | 25 | annealed more |
| Impact Strength (J) (Charpy V-notch) |
12 | 25 | oil quenched from 845°C, single tempered at 315°C more |
| Thermal Properties | |
| |
