RS-2 (0Cr20Ni26Mo3Cu3Si2Nb)

RS-2 sulfuric acid resistant stainless steel is a Cr Ni Mo Cu austenitic stainless steel gradually evolved in the past 60 years. The characteristic of this steel is to improve the corrosion resistance of stainless steel in sulfuric acid and other media by using the complex effect of trace elements to improve the performance of stainless steel passive film without increasing the total amount of alloy.

Equivalent Grades

TrademarkGBGOSTASTMUNSDINW.Nr.NFBSJISSS
RS-200Cr25Ni20Mn3Mo3N

Chemical Composition, %

AlloyCSiMnPSCrNiMoCuFe
RS-2≤0.06≤2.0≤1.0≤0.035≤0.03017.0-22.024.0-28.02.0-3.02.0-3.0Bal

Typical Physical and Mechanical Properties (RT, Annealed)

Density, g/cm3Melting Point, ℃Tensile Strength, MPaYield Strength, MPaELongation, %Hardness, HRB
8.01130-1280≥568≥313≥35/

Available Products and Specifications

Rod, Bar, Wire and ForgingsASTM A182
Plate, Sheet and StripASTM A312
Pipe and TubeASTM A167, 240
Welding Product
OthersASTM A403

Features

This is an austenitic stainless steel with low alloy content and good corrosion resistance

Applications

The castings of plate heat exchanger, wire mesh demister and acid resistant pump made of this material are widely used in sulfuric acid, phosphoric acid and phosphate fertilizer industries.