IS 3261 : 1980 Carbon steel forgings for shipbuilding industry

1 Scope

1.1 This standard covers the requirements for 8 grades of carbonsteel forgings required for shipbuilding purposes.

2 References

IS 2 :1960Rules for rounding off numerical Values

IS 1387 :1967General requirements for the supply ofmetallurgical materials

IS 1762 : Part I :1974 Code for designation of steels : Part IBased onletter symbols

IS1956Glossary of terms relating to iron and steel :

Part I :1976General metallurgy, heat treatment and testing

Part II :1976Steel making

Part III :1975 Hotrolled steel products (excluding sheet andstrip)

Part VI :1976Forging (including drop forging)

IS228Methods of chemical analysis of steels:

PartIDetermination of carbon by volumetric method(for carbon ≥ 0.1 percent

PartIIDetermination of manganese in plain carbon andlow alloy steels (Arsenitic method)

PartIIIDetermination of phosphorus (Alkalimetricmethod)

PartIVDetermination of carbon (gravimetric method) forcarbon ≥ 0.1 percent

PartVIIIDetermination of silicon by gravimetric method(for silicon ≥ 0.1 percent)

PartIXDetermination of sulphur in plain carbon steelsby evolution method

IS 1762 : Part I :1974 Code for designation of steels : Part IBased onletter symbols

IS 1608 :1972Method for tensile testing of steel products

IS 1599 :1974Method for bend test for steel products otherthan sheet, strip, wire and tube