Taiwan Provincial Standard of the People's Republic of China
Latest
CNS 7997-1994
Scope
This standard applies to oil-tempered chromium vanadium alloy steel wire (hereinafter referred to as steel wire) used for internal combustion valve springs or other similar springs. Note: This standard uses the International System of Units (ST). The units and values within { } are for reference only.
CNS 7997-1994 history
1994CNS 7997-1994 Oil Tempered Chromium Vanadium Alloy Steel Wires for Valve Spring