Standard No.:	GB/T 42515-2023
English Name:	Metallic powders—Determination of acid-insoluble content in iron, copper, tin and bronze powders
Chinese Name:	金属粉末 铁、铜、锡和青铜粉末中酸不溶物含量的测定
Chinese Classification:	H16    Powder metallurgy analysis method
Professional Classification:	GB    National Standard
Issued by:	SAMR; SAC
Issued on:	2023-05-23
Implemented on:	2023-12-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	5500 words
Price(USD):	150.0
Delivery:	via email in 1~3 business day

Metallic powders - Determination of acid-insoluble content in iron, copper, tin and bronze powders 1 Scope This document specifies methods for determining, in iron, copper, tin and bronze powders, the approximate content of non-metallic materials which are insoluble in the ordinary mineral acids. The insoluble matter referred to is generally considered to be acid-insoluble silica and silicates, carbides, alumina, clays or other refractory oxides which are either present in the raw material from which the powders are manufactured or introduced during the manufacturing process. 2 Normative references There are no normative references in this document. 3 Terms and definitions No terms and definitions are listed in this document. 4 Field of application The methods are applicable to lubricant-free metallic powders of iron, copper, tin, alloy bronze and elemental mixtures of copper and tin.