This standard specifies the spectrophotometric method for determining the titanium content of 0.3% (m/m) to 5.0% (m/m) in nickel alloys. With some modifications, this method can also be applied to titanium alloys containing tungsten and/or tantalum.
JIS H 1286:1999 history
1999JIS H 1286:1999 Methods for determination of titanium in nickel alloys