GB/T 20975.18-2008 in English
SUPERSEDEDMethods for chemical analysis of aluminium and aluminium alloys - Part 18:Determination of chromium content
- Issued on:2008-03-31
- Implemented on:2008-09-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$175.00
《GB/T 20975.18-2008铝及铝合金化学分析方法 第18部分:铬含量的测定》由TC243(全国有色金属标准化技术委员会)归口,TC243SC1(全国有色金属标准化技术委员会轻金属分会)执行,主管部门为中国有色金属工业协会。
本标准规定了铝及铝合金中铬含量的测定方法。本方法适用于铝及铝合金中铬含量的测定。测定范围:(方法1)0.0001%--0.60%。(方法2)0.010%--0.60%。本部分代替GB/T6987.18―2001《铝及铝合金化学分析方法 火焰原子吸收光谱法测定铬量》和GB/T6987.30―2001《铝及铝合金化学分析方法 萃取分离?二苯基碳酰二肼分光光度法测定铬量》。
与GB/T6987.18―2001相比主要变化如下:
―――将6987.30―2001内容作为本部分的“方法一:萃取分离?二苯基碳酰二肼分光光度法”,原标准内容作为“方法二:火焰原子吸收光谱法”;
―――将测定范围由0.0030%~0.60%修订为0.010%~0.60%;
―――增加了“重复性”条款;
―――增加了“质量保证与控制”条款;
―――对允许差进行了修改。
Scope
Method 1: This method specifies the determination method of chromium content in aluminum and aluminum alloys. This method is applicable to the determination of chromium content in aluminum and aluminum alloys. Measuring range: 0.0001% to 0.60%. Method 2: This method specifies the determination method of chromium content in aluminum and aluminum alloys. This method is applicable to the determination of chromium content in aluminum and aluminum alloys. Measuring range: 0.010% to 0.60%.

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