自2007年7月起，SAE航空航天材料部已宣布本规范“取消”，并已被AMS 2261取代。每当提及已取消的MAM 2261C时，应满足最新版AMS 2261的要求。通过这一行动，本文件仍将列在航空航天材料规范索引的数字部分，并指出其已被AMS 2261取代。本规范涵盖适用于按公制尺寸订购的镍、镍合金和钴合金棒材、棒材和线材的既定公制制造公差。 除非另有说明，否则这些公差适用于所有条件。

This specification has been declared “CANCELLED” by the Aerospace Materials Division, SAE, as of July, 2007, and has been superseded by AMS 2261. The requirements of the latest issue of AMS 2261 shall be fulfilled whenever reference is made to the cancelled MAM 2261C. By this action, this document will remain listed in the Numerical Section of the Index of Aerospace Material Specifications, noting that it has been superseded by AMS 2261.This specification covers stablished metric manufacturing tolerances applicable to bars, rods, and wire of nickel, nickel alloys, and cobalt alloys ordered to metric dimensions. These tolerances apply to all conditions, unless otherwise noted.