Super Duplex Bolting

Super Duplex
Alloy Common Name Related Specification
    European UNS ASTM/ASME
Alloy 255 Ferralium 255 ® 1.4507 S32550 F61
Zeron 100 Zeron 100 ® 1.4501 S32760 F55
Alloy 2507 SAF 2507 ® 1.4410 S32750 F53

We are proud that SSF is the world’s number one bespoke producer of Super Duplex bolting. Super Duplex stainless steel grades are similar to standard duplex, but they contain a higher content of Chromium, thus enhancing the corrosion resistance and mechanical properties. SSF produces fasteners in all three types of Super Duplex.

SSF has released it own special Super Duplex Fastener Specification.

Other material groups:

High Nickel Alloys
Stainless Steel and others

Types of Fastener in Super Duplex

  • Hexagon Bolts and Set Screws
  • Studbolts
  • Nuts
  • Socket Cap Screws
  • Engineer Studs
  • Socket Countersunk Screws
  • Socket Setscrews
  • Hexagon Nyloc Nuts
  • Washers
  • Machined Parts