Through hardening steels
NC310YW
Spécifications
EU
40SiNiCrMoV10
USA
UNS: K54015
AMS
6499
Composition
C
0.4
Ni
1.75
Cr
0.85
Mo
0.4
V
0.2
Si
2.7
Applications
• Main applications:
– Torsion bars
– Gears
– Transmission shafts
Characteristics
• This high strength steel is used for parts subject to high mechanical stresses and high fatigue stress.
• For applications in which parts are exposed to contact friction, NC310YW can be carburized.
• Its high tempering temperature (300°C) enables carburized components to be surface coated, and it can also be used at high working temperatures (>150°C).
Mechanical properties
| Heat treatment |
UTS (N/mm²) |
0,2% YS (N/mm²) |
A (%) |
|---|---|---|---|
| T + F + 2xRv 300°C | 2150 | 1790 | 9 |
Key to heat treatment symbols
| Solution treated | H | Annealed | R |
|---|---|---|---|
| Thermo-mechanical treatment | TM | Quenched and tempered | T+RV |
| Sub-zero treatment | F | Solution treated and aged | H+V |