400 Series Ferritic - Alloys: TP405,TP409,TP430,TP439,TP444,TP446 is straight chromium alloy,magnetic but it is not heat treatable. This series is mainly used for automotive trim and cooking utensils. 400 Series Martensitic - Alloys: TP403,TP410/TP410S,TP420,TP431,is straight chromium alloy, magnetic and can be hardened by heat treatment. It is used for fasteners, pump shafts and turbine blades. Standard: ASTM/ASME A/SA268：Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service. ASTM/ASME A/SA803：Welded Ferritic Stainless Steel Feed Water Heater Tubes.
After negotiation, we can supply pipe with customers'requirement.
