Martensitic stainless steel is a stainless steel that can adjust its mechanical properties through thermal treatment, is a class of hardened stainless steel. After the fire hardness is high, different tempering temperatures have different strong and toughness combinations, mainly used for steam turbine blades, tableware and surgical instruments. Based on the chemical differences, Martensitic stainless steel can be divided into two categories: Martensitic chromium steel and martensitic chromium nickel steel.

General Standard and Application of Martensitic Stainless Steel Tube
S.N.StandardsApplication 
1ASTM A268Seamless and Welded Martensitic Stainless Steel Tubing for General Service
2ASTM A511Seamless Staniless Steel Mechanical Tubing
3ASTM A554Welded Stainless Steel Mechanical Tubing 
4EN 10216-5Seamless Steel Tubes for Pressure Purposes-Stainless Steel Tube
5EN 10217-7Welded Steel Tubes for Pressure Purposes-Stainless Steel Tube
6EN 10296-2Welded Circular Steel tubes for Mechanical and General Engineering Purposes-Stainless Steel Tube
7EN 10297-2Seamless Circular Steel Tubes for Mechanical and General Engineering Purposes-Stainless Steel Tubes