H70;H16 标准查询与下载

DIN ISO 4491-1:1990 金属粉末.用还原法测定氧含量.第1部分:总则

This standard is the first part of a series dealing with the determination of oxygen content in metallic powders by reduction methods. It gives general guidance to these methods, and gives some recommendation for the correct interpretation of the results obtained.#,,#

Metallic powders; determination of oxygen content by reduction methods; general guidelines; identical with ISO 4491-1:1989

DIN ISO 4491-4:1990 金属粉末.用还原法测定氧含量.第4部分:用还原萃取法测定氧的总含量

This standard specifies the method for the determination of total oxygen content of metallic powders in concentrations up to about 2 % by reduction-extraction of the sample at high temperature.

Metallic powders; determination of oxygen content by reduction methods; total oxygen by reduction-extraction; identical with ISO 4491-4:1989

DIN ISO 4496:1987 金属粉末.铁.铜.锡和青铜粉末中酸不溶物含量的测定.ISO 与ISO 4496,1978版相同

This standard specifies methods for determining, in iron, copper, fin and bronze powders, the approximate content of non-metallic materials which are insoluble in the ordinary mineral acids.

Metallic powders; determination of acid-insoluble content in iron, copper, tin and bronze powders; identical with ISO 4496, edition 1978