|
|
化工泵常用哈氏合金、钛、不锈钢三种材质的耐腐蚀性能表
腐蚀介质 |
浓度(%) |
温度(ºC) |
耐腐蚀性 |
||
钛 |
Cr18-Ni8 |
哈氏合金 |
|||
盐酸 |
10 |
24 |
○ |
× |
√ |
30 |
24 |
× |
× |
√ |
|
10 |
80 |
× |
– |
○ |
|
30 |
80 |
× |
– |
△ |
|
硫酸 |
10 |
24 |
△ |
– |
√ |
50 |
24 |
× |
× |
√ |
|
10 |
100 |
× |
– |
√ |
|
50 |
100 |
× |
– |
√ |
|
硝酸 |
10 |
24 |
√ |
√ |
√ |
50 |
24 |
√ |
√ |
– |
|
10 |
100 |
√ |
√ |
△ |
|
50 |
100 |
√ |
○ |
– |
|
王水 |
HCl-HNO3 |
24 |
√ |
× |
△ |
3 :1 |
100 |
○ |
– |
– |
|
铬酸 |
5 |
24 |
√ |
– |
√ |
氢氟酸 |
5 |
30 |
× |
× |
△ |
磷酸 |
10(通气) |
24 |
○ |
√ |
√ |
50(通气) |
24 |
△ |
√ |
√ |
|
10(通气) |
100 |
× |
√ |
√ |
|
10(通气) |
100 |
× |
○ |
√ |
|
三氯化铁 |
10 |
24 |
√ |
× |
√ |
30 |
24 |
√ |
× |
√ |
|
10 |
100 |
√ |
– |
× |
|
30 |
100 |
√ |
– |
× |
|
氯化铜 |
10 |
24 |
○ |
× |
○ |
30 |
24 |
○ |
× |
○ |
|
10 |
100 |
○ |
– |
– |
|
30 |
100 |
○ |
– |
– |
|
氯化钍 |
10 |
24 |
√ |
○ |
○ |
40 |
24 |
√ |
○ |
○ |
|
10 |
100 |
√* |
○* |
○ |
|
40 |
100 |
√* |
○* |
○ |
|
氯化钙 |
10 |
24 |
√ |
√ |
√ |
50 |
24 |
√ |
○ |
√ |
|
10 |
100 |
√* |
– |
√ |
|
50 |
100 |
√* |
× |
√ |
|
氯化铵 |
10 |
24 |
√ |
△ |
√ |
40 |
24 |
√ |
– |
√ |
|
10 |
100 |
√* |
– |
√ |
|
40 |
100 |
√* |
– |
√ |
|
氯化镁 |
10 |
24 |
√ |
△ |
√ |
40 |
24 |
√ |
○ |
√ |
|
10 |
100 |
√* |
△* |
√ |
|
40 |
100 |
√* |
– |
√ |
|
硫酸铁 |
10 |
24 |
√ |
○ |
○ |
50 |
24 |
√ |
○ |
○ |
|
10 |
100 |
√ |
○ |
○ |
|
50 |
100 |
√ |
– |
○ |
|
氨水 |
10 |
24 |
√ |
√ |
√ |
30 |
24 |
√ |
√ |
√ |
|
10 |
80 |
√ |
○ |
○ |
|
30 |
80 |
√ |
○ |
√ |
上海龙亚泵阀友情提醒您,在选化工泵的材质前请参考此耐腐蚀参数表,以下为该表的标注说明:
√ 腐蚀率<0.051毫米/年 ○ 腐蚀率<0.508毫米/年
△ 腐蚀率0.508—1.27毫米/年 × 腐蚀率>1.27毫米/年
* 特定情况下,可能产生点腐蚀或者局部腐蚀。