钛阀门、不锈钢、哈氏合金阀门材料耐腐蚀性对比表
钛阀、不锈钢阀门、哈氏合金阀门在盐酸,硫酸,硝酸,王水,铬酸,氢氟酸,磷酸,三氯化铁,氯化铜,氯化钍,氯化钙,氯化铵,氯化镁,硫酸铁,氨水,氢氧化钠,碳酸钠,硫化氢,氯气,二氧化硫,海水,醋酸,甲酸,乳酸,草酸,柠檬酸等腐蚀介质中的材料耐腐蚀性对比表如下:
腐蚀介质 |
浓度(%) |
温度(℃) |
耐腐蚀性 |
||
钛阀门 |
Cr18-Ni8 普通不锈钢 |
哈氏合金C系列 |
|||
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 |
√ |
● |
√ |
|
氢氧化钠 |
10 |
24 |
√ |
√ |
√ |
50 |
24 |
√ |
√ |
- |
|
10 |
100 |
√ |
√ |
√ |
|
50 |
100 |
● |
● |
√ |
|
碳酸钠 |
10 |
24 |
√ |
√ |
√ |
30 |
24 |
- |
- |
- |
|
10 |
100 |
√ |
√ |
√ |
|
30 |
100 |
√ |
√ |
√ |
|
硫化氢 |
干燥 |
24 |
√ |
△ |
√ |
湿 |
24 |
√ |
● |
● |
|
氯气 |
干燥 |
24 |
× |
- |
√ |
湿 |
24 |
√ |
- |
△ |
|
干燥 |
100 |
- |
√ |
● |
|
湿 |
90 |
√ |
- |
△ |
|
二氧化硫 |
干燥 |
30—60 |
√ |
- |
- |
湿 |
30—90 |
√ |
- |
- |
|
海水 |
高速流动状态 |
24 |
√ |
- |
- |
100 |
√* |
- |
√ |
||
醋酸 |
10 |
24 |
√ |
√ |
√ |
60 |
24 |
√ |
√ |
√ |
|
10 |
100 |
√ |
√ |
√ |
|
60 |
100 |
√ |
● |
√ |
|
甲酸 |
10 |
24 |
● |
● |
√ |
50 |
24 |
● |
● |
√ |
|
10 |
100 |
● |
× |
√ |
|
30 |
100 |
× |
× |
√ |
|
乳酸 |
10 |
24 |
√ |
● |
● |
50 |
24 |
√ |
● |
√ |
|
10 |
100 |
√ |
● |
● |
|
50 |
100 |
√ |
× |
● |
|
草酸 |
10 |
24 |
● |
● |
● |
20 |
52 |
× |
- |
● |
|
50 |
24 |
- |
● |
● |
|
10 |
100 |
- |
- |
● |
|
50 |
100 |
- |
× |
● |
|
柠檬酸 |
10 |
24 |
√ |
● |
√ |
50 |
24 |
√ |
● |
√ |
|
10 |
100 |
√ |
● |
√ |
|
50 |
100 |
× |
× |
√ |
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。
以上资料仅供参考。