规定了用于制造电子管和阀门用氧化物涂层阴极的两种镁激活镍（0.075%和0.050%镁）的成分、机械性能和光洁度，其形式为管、带、带或线。交叉引用:BS 350BS 1499BS 3073BS 3074

Specifies the composition, mechanical properties and finish of two grades of magnesium-activated nickel (0.075 and 0.050 per cent magnesium) in the form of tube, strip, tape or wire used in the manufacture of oxide-coated cathodes for electronic tubes and valves.Cross References:BS 350BS 1499BS 3073BS 3074