Sales hotline: +1 800 878 3675
Contact us on usa@langleyalloys.com to request a quote
Sales hotline: +1 800 878 3675
Duplex stainless steels have a ‘duplex’ two-phase micro-structure consisting of both austenitic and ferritic grains that gives them a combination of attractive properties. Duplex alloys were developed around a 22% Chromium addition level, which largely defines them from subsequent super duplex alloys which were developed around a 25% Chromium addition level for higher corrosion resistance still.
In general, they are twice as strong as either austenitic or ferritic stainless steels. They achieve good toughness and ductility, somewhere between the two. Their corrosion resistance is also very good, assuming comparable levels of Chromium, Molybdenum and Nitrogen in selected compositions. One important advantage over austenitic stainless steels is their resistance to stress corrosion cracking. Yet they are significantly more cost effective, and less prone to price variability, due to their lower nickel content.
Lega | Nome comune | Specifiche correlate | Carico di Rottura | Carico di Snervamento | Allungamento | ||
Britannico | Europeo | Stati Uniti | N/mm2 (ksi) | N/mm2 (ksi) | (%) | ||
Sanmac 2205 | Duplex 2205 | 318S13 | 1.4462 X2CrNiMoN22.5.3 AFNOR Z2CND22.05Az Sandvik SAF2205 | ASTM A276 S31803/S2205 ASTM A182 F51 / F60 | 655 (95) | 450 (65) | 25 |
Sanmac 2205 (Hollow Bar) | UNS S31803/S32205 | UNS S32205 UNS S31803 EN 1.4462 X2 CrNiMoN 22-5-3 | ASTM A790 NACE MR 1075 / ISO 15156 ASME Case 2067-2 | 680 (99) | 450 (65) | 25 |
Worldwide Delivery Available
We can offer air, sea and road freight shipping options, with choice of packaging, to deliver to customers globally.
Inventory Management
Let us manage your total material requirements with call-off and consignment arrangements.
Up to 40 sizes per alloy available
More sizes equal less machining and a more cost-effective supply chain.