BS 3HR 502:2011 Specification for nickel-chromium-cobalt-titanium- aluminium heat-resisting alloy cold drawn and solution treated wire for springs and springs (Nickel base, Cr 19.5, Co 18.0, Ti 2.5, Al 1.5)
2011BS 3HR 502:2011 Specification for nickel-chromium-cobalt-titanium- aluminium heat-resisting alloy cold drawn and solution treated wire for springs and springs (Nickel base, Cr 19.5, Co 18.0, Ti 2.5, Al 1.5)
1973BS 2HR 502:1973 Specification for nickel-chromium-cobalt-titanium-aluminium heat-resisting alloy cold drawn and solution heat treated wire for springs (nickel base, Cr 19.5, Co 18.0, Ti 2.5, Al 1.5)