BS S 161:1990 铬-镍-钼耐腐蚀钢规范.光亮棒材和零件(540MPa、极限等圆断面160mm)(铬17.5、镍12.5、钼2.25、控制的氮含量)
Specification for chromium-nickel-molybdenum corrosion-resisting steel. Bright bars and parts (540 MPa, limiting ruling section 160 mm) (Cr 17.5, Ni 12.5, Mo 2.25, controlled nitrogen content)