Ferralium ®

Ferralium ® is a grade of Super Duplex Stainless Steel which offers excellent resistance to pitting, crevice and stress corrosion cracking and good resistance to wet chlorine. With the addition of copper, as well as molybdenum and chromium, this super duplex stainless steel has a very high resistance to corrosion in seawater and chemical environments.

West Special Fasteners are manufacturers of Ferralium Fasteners.

Ferralium Fasteners such as Hexagon Nuts, Hexagon Bolts, Studs, Socket Setscrews, Studbolts, Socket Head Capscrews & Bespoke machined or Hot Forged items can all be produced at West Special Fasteners Limited.

We can also supply round bar in Ferralium.

Ferralium is used in a variety of applications which require a good level of corrosion resistance in chemical and seawater environments, such as fasteners in the marine industry, swimming pools, sewage treatment, subsea equipment in the oil and gas industry, chemical processing and paper industries.

West Special Fasteners specialises in exotic metals and have supplied major UK companies with Ferralium, nuts, bolts etc.


We look forward to helping with your Ferralium requirements and would welcome any enquiries by telephone on + 44 (0)1246 291111 or email sales@westspecialfasteners.co.uk.


Typical Chemical Analysis

C Si Mn P S Cr Ni Mo
0.040 1.000 1.500 0.040 0.030 24.0-27.0 4.5-6.5 2.9-3.9
W N2 Nb Ti Co Cu Al B
0.10-0.25 1.5-2.5
V Fe Mg Ta Nb + Ta Ca O2 Bi
Se Sn Zn Pb

Typical Mechanical Properties

Tensile Strength: 750N/mm² Min Impacts:
0.2% Proof Stress: 550N/mm² Min
Elongation: 25% Min Stress Rupture:
Reduction of Area:
Hardness: 290 BH Max
Other Remarks: