G90074 标准腐蚀试片（铜片）

标准腐蚀试片（铜片）符合GB5096《石油产品铜片腐蚀试验法》国家标准、GB466《铜分类》中Cu2（2号铜），纯度大于99.9%。

标准腐蚀试片（铜片）规格:长75mm×宽12.5mm×厚1.5-3.0mm。

标准腐蚀试片材质有A3、20＃、不锈钢、黄铜、紫铜、铝、铸铁、镍试片等

试片保存、使用方法：
1. 将标准腐蚀试片在蒸馏水中用脱脂擦洗一遍，再用蒸馏水冲洗15秒钟；
2. 将标准腐蚀试片在化学纯无水乙醇（50ml/每10片）中用脱脂擦洗两遍；3. 标准腐蚀试片（测腐蚀挂片）置干燥滤纸上，冷风吹干；
4. 标准腐蚀试片用滤纸包好，置干燥器中，24小时后称重待用；
5. 原封装的试片置无腐蚀性气体处，防潮存放；
6. 已启封而未用完的标准腐蚀试片仍置于防锈纸内，放在干燥器中。

Standard sample corrosion （copper） in line with national GB5096 "test" of copper corrosion in petroleum products standard, GB466 "Cu2" in the classification of copper （2 copper）, the purity is more than 99.9%.
Standard sample corrosion （copper） specifications: 75mm x 12.5mm wide x 1.5-3.0mm thick.
Standard corrosion test piece material A3, No. 20, stainless steel, brass, copper, aluminum, iron, nickel specimen.
Specimen preservation, use method:
1 the standard corrosion test piece with cotton scrub again in distilled water, and then rinsed with distilled water for 15 seconds;
2 the standard corrosion test piece in the chemically pure ethanol （50ml/ per 10） using defatted scrubbed two times; 3 standard corrosion specimen （test coupon） a dry filter paper, dry cold;
4 standard corrosion test piece with filter bag, the dryer, 24 hours after weighing the stand-by;
Specimen 5 original package is non corrosive gases, moisture storage;
Standard corrosion 6 has been opened and the unused specimens are still in the antirust paper inside, put in dryer.