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

See also

GKP

Steels for nitriding

ML340

Maraging steels

819AW

Through hardening steels