Short Description:

630 stainless steel alloy is made up of copper, niobium/columbium deposit, hardening Martensitic stainless steel. This level has a high strength, hardness (up to 300 º C/572 º f) and corrosion resistance and other characteristics.

       630 stainless steel alloy is made up of copper, niobium/columbium deposit, hardening Martensitic stainless steel. 

　　This level has a high strength, hardness (up to 300 º C/572 º f) and corrosion resistance and other characteristics. 

　　After heat treatment, mechanical properties of the product more perfect and can reach up to 1100-1300 MPA (160-190 KSI) compressive strength. 

　　This class cannot be used for more than 300 º c (572 º f) or very low temperatures, its atmosphere and dilute acid or salt with good corrosion resistance, corrosion resistance and 304. Fields of application? Offshore platforms, helicopter decks, and other platforms? The food industry? Pulp and paper industry? Aerospace (turbine blades)? Mechanical parts? Nuclear waste barrels 630 stainless steel alloy is precipitation, water quenching, Martensitic stainless steel, and this level has a high strength, hardness and corrosion resistance and other characteristics. After heat treatment, mechanical properties of the product more perfect and can reach up to 1100-1300 MPA (160-190 KSI) compressive strength. 

　　This level cannot be used above 300 ° c (570F) or very low temperatures, its atmosphere and dilute acid or salt with good corrosion resistance, corrosion resistance and 304.

　   China grade  0Cr17Ni4Cu4Nb 05Cr17Ni4Cu4Nb

       chemical composition

　　≤0.07 ≤1.00 ≤1.00 ≤0.035 

　　S Ni Cr Mo 

　　≤0.030 3.00-5.00 15.5-17.5 - 

　　Cu Nb others

　　3.00-5.00 0.15-0.45 -

　　American ASTMS17400，AISI630,UNS630

　    chemical composition 　　

        C Si Mn P 

　　≤0.07 ≤1.00 ≤1.00 ≤0.040 

　　S Ni Cr Mo 

　　≤0.030 3.00-5.00 15.5-17.5 - 

　　Cu Nb others  

　　3.00-5.00 0.15-0.45 - 

        Japan  SUS630

　   chemical composition

　　C Si Mn P 

　　≤0.07 ≤1.00 ≤1.00 ≤0.040 

　　S Ni Cr Mo 

　　≤0.030 3.00-5.00 15.5-17.5 - 

　　Cu Nb+Tao others 

　　3.00-5.00 0.15-0.45 -

　　Europe X5CrNiCuNb16-4 

       chemical composition 　

    　C Si Mn P 

　　≤0.07 ≤1.00 ≤1.00 ≤0.040 

　　S Ni Cr Mo 

　　≤0.030 3.00-5.00 15.5-17.5 - 

　　Cu Nb+Tao  others 

　　3.00-5.00 0.15-0.45 -