鈦閥門、不銹鋼、哈氏合金閥門材料耐腐蝕性對比表
鈦閥、不銹鋼閥門、哈氏合金閥門在鹽酸,硫酸,硝酸,王水,鉻酸,氫氟酸,磷酸,三氯化鐵,氯化銅,氯化釷,氯化鈣,氯化銨,氯化鎂,硫酸鐵,氨水,氫氧化鈉,碳酸鈉,硫化氫,氯氣,二氧化硫,海水,醋酸,甲酸,乳酸,草酸,檸檬酸等腐蝕介質中的材料耐腐蝕性對比表如下:
腐蝕介質 |
濃度(%) |
溫度(℃) |
耐腐蝕性 |
||
鈦閥門 |
Cr18-Ni8 普通不銹鋼 |
哈氏合金C系列 |
|||
鹽酸 |
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 |
● |
- |
- |
|
鉻酸 |
5 |
24 |
√ |
- |
√ |
氫氟酸 |
5 |
30 |
× |
× |
△ |
磷酸 |
10(通氣) |
24 |
● |
√ |
√ |
50(通氣) |
24 |
△ |
√ |
√ |
|
10(通氣) |
100 |
× |
√ |
√ |
|
10(通氣) |
100 |
× |
● |
√ |
|
三氯化鐵 |
10 |
24 |
√ |
× |
√ |
30 |
24 |
√ |
× |
√ |
|
10 |
100 |
√ |
- |
× |
|
30 |
100 |
√ |
- |
× |
|
氯化銅 |
10 |
24 |
● |
× |
● |
30 |
24 |
● |
× |
● |
|
10 |
100 |
● |
- |
- |
|
30 |
100 |
● |
- |
- |
|
氯化釷 |
10 |
24 |
√ |
● |
● |
40 |
24 |
√ |
● |
● |
|
10 |
100 |
√* |
●* |
● |
|
40 |
100 |
√* |
●* |
● |
|
氯化鈣 |
10 |
24 |
√ |
√ |
√ |
50 |
24 |
√ |
● |
√ |
|
10 |
100 |
√* |
- |
√ |
|
50 |
100 |
√* |
× |
√ |
|
氯化銨 |
10 |
24 |
√ |
△ |
√ |
40 |
24 |
√ |
- |
√ |
|
10 |
100 |
√* |
- |
√ |
|
40 |
100 |
√* |
- |
√ |
|
氯化鎂 |
10 |
24 |
√ |
△ |
√ |
40 |
24 |
√ |
● |
√ |
|
10 |
100 |
√* |
△* |
√ |
|
40 |
100 |
√* |
- |
√ |
|
硫酸鐵 |
10 |
24 |
√ |
● |
● |
50 |
24 |
√ |
● |
● |
|
10 |
100 |
√ |
● |
● |
|
50 |
100 |
√ |
- |
● |
|
氨水 |
10 |
24 |
√ |
√ |
√ |
30 |
24 |
√ |
√ |
√ |
|
10 |
80 |
√ |
● |
● |
|
30 |
80 |
√ |
● |
√ |
|
氫氧化鈉 |
10 |
24 |
√ |
√ |
√ |
50 |
24 |
√ |
√ |
- |
|
10 |
100 |
√ |
√ |
√ |
|
50 |
100 |
● |
● |
√ |
|
碳酸鈉 |
10 |
24 |
√ |
√ |
√ |
30 |
24 |
- |
- |
- |
|
10 |
100 |
√ |
√ |
√ |
|
30 |
100 |
√ |
√ |
√ |
|
硫化氫 |
干燥 |
24 |
√ |
△ |
√ |
濕 |
24 |
√ |
● |
● |
|
氯氣 |
干燥 |
24 |
× |
- |
√ |
濕 |
24 |
√ |
- |
△ |
|
干燥 |
100 |
- |
√ |
● |
|
濕 |
90 |
√ |
- |
△ |
|
二氧化硫 |
干燥 |
30—60 |
√ |
- |
- |
濕 |
30—90 |
√ |
- |
- |
|
海水 |
高速流動狀態 |
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 |
- |
× |
● |
|
檸檬酸 |
10 |
24 |
√ |
● |
√ |
50 |
24 |
√ |
● |
√ |
|
10 |
100 |
√ |
● |
√ |
|
50 |
100 |
× |
× |
√ |
標注說明:
√ 腐蝕率<0.051毫米/年 ○ 腐蝕率<0.508毫米/年
△ 腐蝕率0.508—1.27毫米/年 × 腐蝕率>1.27毫米/年
* 特定情況下,可能產生點腐蝕或者局部腐蝕。
以上資料僅供參考。