本规范涵盖应用于黑色金属（熟铁、碳钢、低合金钢和耐腐蚀钢）的黑色氧化物涂层。在需要黑色表面的地方，可以使用带有或不带有补充防腐处理的黑色氧化物涂层。黑色氧化物涂层只能在轻度腐蚀条件下获得非常有限的防腐效果。

This specification covers black oxide coatings applied to ferrous metals (wrought iron, carbon, low alloy, and corrosion resistant steels). Black oxide coatings, with or without a supplementary preservative treatment, may be used where a black surface is required. Only very limited corrosion protection, under mildly corrosive conditions, is obtained as a result of black oxide coating.