DUPLEX STAINLESS STEEL ALLOYS
Our Duplex and Super-Duplex stainless steels are cost effective solutions to stress corrosion cracking. They offer high resistance to this potential cause of sudden failure along with a greater resistance to pitting corrosion than is available with 316. And this is combined with high strength which allows for optimum material utilisation.
We have an extensive range of stock in these grades. Please contact us with details of your specific requirements or for Technical Data.
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| Product | Major Applications | Availability |
ALLOY 255 Corrosion resistantGrade: UNS S32550 W Nr. 1.4507 Composition: 64Fe-25Cr-5.7Ni-3.3Mo-2Cu-N Download: Alloy 255 Datasheet | Copper containing austenitic-ferritic stainless steel. ALLOY 255 has the added benefit over ALLOY 2205 of being resistant to sulphuric and phosphoric acids over a range of conditions. | Imported; ex-stock or mill availability |
| ALLOY S32760 Corrosion resistant Grade: UNS S32760 W Nr. 1.4501 Composition: 64Fe-25Cr-7Ni-3.5Mo-0.75Cu-0.75W-N | A highly alloyed duplex stainless steel for use in seawater, brine and similar chloride containing environments. Corrosion and strength properties superior to those of ALLOY 2205. | Imported; ex-stock or mill availability |
| LDX2101 Corrosion resistant Grade: UNS S32101 W Nr. 1.4162 Composition: 72Fe-21.5Cr-5Mn-1.5Ni-0.3Mo-N | A low-alloyed general purpose duplex grade displaying high strength and corrosion resistance on a par with most standard grades of stainless steel. | Selected items from local stock. Balance imported; ex-stock or mill availability |
| SAF / ALLOY 2205 Corrosion resistant Grade: UNS S31803 UNS S32205 W Nr. 1.4462 Composition: 69Fe-22Cr-5.7Ni-3Mo-N | A duplex stainless steel with excellent resistance to stress corrosion cracking. It displays a high yield strength as well as a useful resistance to pitting. | Comprehensive range of plate, bar, pipe, and welding consumables from local stock. Also imports from stock or mill production |
| SAF 2507 Corrosion resistant Grade: UNS S32750 W Nr. 1.4410 Composition: 66Fe-24Cr-6Ni-3Mo-N | As duplex stainless steel this alloy displays similar properties to ALLOY 2205. Strength is however greater as is resistance to pitting and crevice corrosion and resistance to stress corrosion and cracking. | Comprehensive range of plate, bar, pipe, and welding consumables from local stock. Also imports from stock or mill production |