Al-alloyed nitriding steel grade for large cross-sections. Suitable for piston rods, extruders, cylinders, gear wheels,
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.30 | 0.37 | ||
| Si | - | 0.40 | ||
| Mn | 0.40 | 0.70 | ||
| P | - | 0.025 | ||
| S | - | 0.035 | ||
| Al | 0.80 | 1.20 | ||
| Cr | 1.50 | 1.80 | ||
| Mo | 0.15 | 0.25 | ||
| Ni | 0.85 | 1.15 |
V820 Nitriding steel
Chromium, Nickel, Aluminium steel for applications requiring very high surface hardness and wear resistance, in particular in large cross sections, in the hardened and tempered condition
Cam discs, Cams, Pinion shafts, Measuring tools. Injection pump parts, Valve spools and Gudgeon pins.
| Proof strength Rp0.2 (MPa) |
Tensile strength Rm (MPa) |
Impact energy KV (J) |
Elongation at fracture A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 767 (≥) | 118 (≥) | 24 | 31 | 22 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 241 |
| Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
Modulus of elasticity kN/mm2 |
Expansion rate |
|---|---|---|---|---|---|---|---|
| 324 (≥) | 219 (≥) | 31 | 31 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 311 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 718 | 582 | 545 |
We can customize the production of V820 grade, contact us for the best solution.
–sales@specificsteel.com