Specification for 4 per cent nickel-chromium-molybdenum steel (Air hardening). (1545 MPa: limiting ruling section 63.5mm)
4%镍铬钼钢（空气硬化）规范 （1545 MPa:极限截面63.5mm）

2015-09-30

Specification for 3% nickel case hardening steel castings (700 N/mm²)
3%镍表面硬化钢铸件规范（700 N/mm^2）

1973-03-09

Specification. 3% nickel-chromium-molybdenum case-hardening steel billets, bars, forgings and parts (1180-1380 MPa)
规格3%镍铬钼表面硬化钢坯、棒材、锻件和零件（1180-1380 MPa）

1976-04-30

Specification for 3 per cent chromium-molybdenum-vanadium steel (vacuum remelted - air hardening) (157 kgf/mm² (100 tonf/in²): limiting ruling section 30 mm (1⅛ in))
3%铬钼钒钢（真空重熔-空气硬化）规范（157 kgf/mm^2（100 tonf/in^2）:极限截面30 mm（1 1 1/8 in））

1967-08-31