Comparison of corrosion resistance between titanium and other metallic materials
腐 蝕 媒 Corrosion Medium 組成(%)
Concentration
溫度(℃)
Temperature
耐 蝕 性 Corrosion Resistance
Titanium 18-8 stainless steel Hastelloy C
Hydrochloric acid
HCl
鹽酸
10
30
10
30
24
24
80
80





-
-



Sulfuric acid
H2SO4
硫酸
10
50
10
50
24
24
100
100



-

-
-




Nitric acid
HNO3
硝酸
10
50
10
50
24
24
100
100







-

-
Aqua regia 王水 HC1.HNO3
3:1
24
100


-

-
Chromic acid H2CrO4 鉻酸 5 24 -
Hydrogen fluoride 氟化氫 5 30
Phosphoric acid
H3PO4
磷酸
10(通氣)
50(通氣)
10(通氣)
50(通氣)
24
24
100
100










Ferric chloride
FeCl3
氯化鐵
10
30
10
30
24
24
100
100





-
-



Cupric Chloride
CuCl2
氯化銅
10
30
10
30
24
24
100
100





-
-


-
-
Thorium chloride
氯化鉀
10
40
10
40
24
24
100
100









Calcium chloride
CaCl2
氯化鈣
10
50
10
50
24
24
100
100





-



Ammonium chloride
NH4Cl
氯化銨
10
40
10
40
24
24
100
100




-
-
-



Magnesia chloride
MgCl2
氯化鎂
10
40
10
40
24
24
100
100






-



腐 蝕 媒 Corrosion Medium 組成(%)
Concentration
溫度(℃)
Temperature
耐 蝕 性 Corrosion Resistance
Titanium 18-8 stainless steel Hastelloy C
Ferrous sulfate
FeSO4
硫酸鐵
10
50
10
50
24
24
100
100






-




Ammonia
N H3
10
30
10
30
24
24
80
80










Caustic soda

10
50
10
50
24
24
100
100







-

Hydrogen Sulfide
N2S
硫化氫

乾GAS
濕GAS

24
24
 







Chlorine
Cl2
氯 氣
乾GAS
濕GAS
乾GAS
濕GAS
24
24
100
90


-
-
-

-



Sulfur dioxide
SO2
亞硫酸氣

乾GAS
濕GAS

30~60
30~90
 


-
-

-
-
Seawater
海 水

高速流
24
100

-
-
-
Acetic acid
CH3 COOH
醋 酸
10
60
10
60
24
24
100
100









Formic acid
HCOOH
蟻 酸
10
50
10
30
24
24
100
100









Lactic acid
CH3CH(OH)COOH
乳 酸
10
50
10
50
24
24
100
100









 
Oxalic acid
(COOH)2
草 酸
10
20
50
10
50
24
52
24
100
100


-
-
-

-

-




Citric acid
C6H6O7
檸 檬 酸
10
50
10
50
24
24
100
100









*局部性針孔腐融
There are some cases in which pitting and other localized corrosion may be caused.
記號說明
:<0.127
:<0.127~0.508
:0.508~1.27
:>1.27 (Unit : mm/year )
 

 

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