Anzor Super Stainless Range

At Anzor, we supply some of the world’s most advanced stainless steels. These grades are engineered for superior strength, corrosion resistance, and long-term performance in the toughest environments — from marine and coastal construction to nuclear and aerospace applications.

Go beyond standard stainless with precision-engineered fasteners built for extreme environments.

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Comparison Chart

Grade	Strength (Tensile)	PREN	Key Use Case
2202 (Class 80)	0.05 - 0.20	24	High strength and cost effective
Hardtec	0.14 - 0.20	36	High strength and high corrosion resistance
2507-80	0.14 - 0.20	36	Highest strength and high corrosion resistance
Bumax 88	0.14 - 0.20	36	The highest strength - made to order
Bumax 109	0.24 - 0.35	41	High corrosion resistance for salt water
Bumax DX 129	0.24 - 0.35	41	Very high corrosion resistance and strength
Bumax DX 149	0.24 - 0.35	41	Very high corrosion resistance and strength
Bumax SDX 109	0.24 - 0.35	41	Very high corrosion resistance and strength
1.4529 A8	0.24 - 0.35	41	Very high corrosion resistance and strength

If the PREN value for a SS is over 40, the SS should be fully resistant to localised corrosion (pitting/crevice corrosion) when immersed in seawater.

NB:This information is provided as a guide only. Anzor does not accept liability for the application of this information.

For advice about stainless steel contact the Nickel Institute.

2202-80 Lean Duplex

Strength: ~800 MPa tensile, ~550 MPa yield (almost double 316).
Corrosion Resistance: Comparable to 316.
Advantages: High strength with lower alloy cost – a smart alternative to 316 for structural use.
Applications: Cost-effective choice for load-bearing fasteners and structural assemblies.
The economical way to achieve duplex strength.

Hardtec

Properties: Hardened stainless steel with excellent drilling capability.
Advantages: Faster and cleaner penetration, retains corrosion resistance.
Applications: Self-drilling screws and fastening systems where installation speed and durability matter.
Hard when you need it, stainless where it counts.

2507-80 Super Duplex

Strength: ~800 MPa tensile, ~550 MPa yield.
Corrosion Resistance: Fully resistant to saltwater immersion, PREN >40.
Applications: Marine, offshore, desalination, and high-chloride exposure environments.
Engineered for the sea – ultimate protection against saltwater corrosion.

Bumax® Fastener Range

When only the strongest stainless steel fastener in the world will do.

Bumax 88: Equivalent to 316 but stronger (800 MPa).
Bumax 109: 1,000 MPa tensile with excellent corrosion resistance.
Bumax DX129:
Bumax DX149: 1,200–1,400 MPa tensile – the world’s strongest stainless steel fasteners.
Bumax SDX109: 1,000 MPa tensile with Super Duplex corrosion resistance.

1.4529 A8 (Super Austenitic)

Strength: ~650–700 MPa tensile.
Corrosion Resistance: Extreme resistance to pitting and stress corrosion cracking; reliable even in chlorine-rich atmospheres.
Applications: Indoor swimming pools, chemical processing, and aggressive environments where 316 fails.
For the harshest chlorine-rich atmospheres – proven where others cannot perform.

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