Special steels are a collection of steels grades selected for their advanced properties. They find applications in a variety of high-technology market sectors where improved mechanical properties over more basic engineering steels are required.
Most of these steels are produced to more than one specification and they can be made to bespoke requirements where required
Nearest Equivalent Specification
Available Products
15 CDV 6
A chromium-molybdenum-vanadium heat treatable steel with high strength after heat treatment (1080-1280 Nmm2). Easily welded, finds many applications in tube and bar forms.
W.Nr
1.77346
16 NCD 13
A nickel-chromium-molybdenum case hardening steel. Often used for applications such as gears that requiring high core strength and toughness. Tensile strength 1180-1380 Nmm2.
BS
W.Nr
S157
1.6657
32 CDV 13 »
A chromium-molybdenum-vanadium nitriding steel with high strength after nitriding (≈1350 Nmm2). Used for components requiring high core strength.
AMS
W.Nr
6481
1.7765
40 CDV 20
A chromium-molybdenum-vanadium heat treatable steel with very high strength after heat treatment (≈1850 Nmm2). Easily welded with a good temperature range of operation.
W.Nr
AMS
1.7784
6437,6485
4130 »
A chromium-molybdenum heat treatable steel. Through hardenable and easily welded and machined. Tensile strength after heat treatment ≈860 Nmm2.
AMS
6346
4140 »
A chromium-molybdenum deep hardening steel. Used for components requiring high hardness, toughness and fatigue resistance. Nitriding increases resistance to wear and abrasion.
AMS
6382
4330M
A chromium-nickel-molybdenum heat treatable steel modified by adding vanadium to improve hardenability. Good toughness. Tensile strength after heat treatment 1520-1650 Nmm2.
4340 »

Special steels are a collection of steels grades selected for their advanced properties. They find applications in a variety of high-technology market sectors where improved mechanical properties over more basic engineering steels are required.
Most of these steels are produced to more than one specification and they can be made to bespoke requirements where required
Nearest Equivalent Specification
Available Products
15 CDV 6
A chromium-molybdenum-vanadium heat treatable steel with high strength after heat treatment (1080-1280 Nmm2). Easily welded, finds many applications in tube and bar forms.
W.Nr
1.77346
16 NCD 13
A nickel-chromium-molybdenum case hardening steel. Often used for applications such as gears that requiring high core strength and toughness. Tensile strength 1180-1380 Nmm2.
BS
W.Nr
S157
1.6657
32 CDV 13 »
A chromium-molybdenum-vanadium nitriding steel with high strength after nitriding (≈1350 Nmm2). Used for components requiring high core strength.
AMS
W.Nr
6481
1.7765
40 CDV 20
A chromium-molybdenum-vanadium heat treatable steel with very high strength after heat treatment (≈1850 Nmm2). Easily welded with a good temperature range of operation.
W.Nr
AMS
1.7784
6437,6485
4130 »
A chromium-molybdenum heat treatable steel. Through hardenable and easily welded and machined. Tensile strength after heat treatment ≈860 Nmm2.
AMS
6346
4140 »
A chromium-molybdenum deep hardening steel. Used for components requiring high hardness, toughness and fatigue resistance. Nitriding increases resistance to wear and abrasion.
AMS
6382
4330M
A chromium-nickel-molybdenum heat treatable steel modified by adding vanadium to improve hardenability. Good toughness. Tensile strength after heat treatment 1520-1650 Nmm2.
4340 »