Through hardening steels

CLARMHBR

Spécifications

EU
30NiCrMoV14

Composition

C
0.3
Ni
3.5
Cr
1.5
Mo
0.4
V
0.18
Mn
0.2

Applications

• Large caliber gun barrels and accessories (breech rings, breech blocks, muzzle brakes, etc…).
• Pressure vessels.
• Mechanical parts in the range of YS 900 to 1200 N/mm2.

Characteristics

• High mechanical characteristics.
• Good impact strength at low temperature.
• High level of hardenability in water and oil.
• Good characteristics at high temperatures.

Mechanical properties

Heat
treatment
UTS
(N/mm²)
0,2%
YS
(N/mm²)
A
(%)
KV
-40°C
(J)
T + Rv 600°C 1200 1100 15 60
T + Rv 570°C130012201540

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

CLARMHB7

Through hardening steels

CLARMHB3

Through hardening steels