Organic compound

Concentration%

Temperature℃

Corrosion Rate Millimeters/Year

Corrosion resistance grade

tetrachloroethylene（H2O)

100% steam and liquid

Boiling

0.0005

Excellent

Trichloromethane

100% steam and liquid

Boiling

0.0003

Excellent

Chloroform（H2O）

Boiling

0.127

Excellent

Trichloroethylene

99% steam and liquid

Boiling

0.00254

Excellent

Trichloroethylene (stable)

99% steam and liquid

Boiling

0.00254

Excellent

Formaldehyde

37% steam and liquid

Boiling

0.127

Excellent

Formaldehyde 2.5%H2SO4

50% steam and liquid

Boiling

0.305

Excellent

aqueous alkali

Concentration%

Temperature℃

Corrosion Rate Millimeters/Year

Corrosion resistance grade

Sodiumhydroxide

10

一/ Boiling

一/0.020

一/ Excellent

20

Room temperature / Boiling

＜0.127/＜0.127

Excellent / Excellent

50

Room temperature / Boiling

＜0.0025/＜0.0508

Excellent / Excellent

73

一/ Boiling

一/0.127

一/ Excellent

Potassiumhydroxide

10

一/ Boiling

一/＜0.127

一/ Excellent

25

一/ Boiling

一/＜0.305

一/ Good

30

30/ Boiling

0.000/2.743

Excellent / Poor

ammonium hydroxide

28

Room temperature /一

0.0025/一

Excellent /一

Sodium carbonate

20

Room temperature / Boiling

＜0.127/＜0.127

Excellent / Excellent

Amonia (with 2%NaOH)

20

Room temperature /一

0.0708/一

Excellent /一

saline solution

Concentration%

Temperature℃

Corrosion Rate Millimeters/Year

Corrosion resistance grade

ferric chloride

40

Room temperature /95

0.000/0.002

Excellent/excellent

Ferrous chloride

30

Boiling at room temperature

00000/＜0.127

Excellent/excellent

cuprous chloride

10

Boiling at room temperature

＜0.127/＜0.127

Excellent/excellent

cuprous chloride

50

Boiling at room temperature

＜0.127/＜0.127

Excellent/excellent

Ammonium chloride

10

Boiling at room temperature

＜0.127/＜0.127

Excellent/excellent

Calcium chloride

10

Boiling at room temperature

＜0.127/＜0.127

Excellent/excellent

aluminium chloride

25

Boiling at room temperature

＜0.127/＜0.127

Excellent/excellent

magnesium chloride

10

Boiling at room temperature

＜0.127/＜0.127

Excellent/excellent

nickel chloride

5-10

Boiling at room temperature

＜0.127/＜0.127

Excellent/excellent

barium chloride

20

Boiling at room temperature

＜0.127/＜0.127

Excellent/excellent

Copper sulfate

20

Boiling at room temperature

＜0.127/＜0.127

Excellent/excellent

Ammonium sulfate

Saturation at 20℃

Boiling at room temperature

＜0.127/＜0.127

Excellent/excellent

sodium sulfate

50

Boiling at room temperature

＜0.127/＜0.127

Excellent/excellent

Lead sulfite

Saturation at 20℃

Boiling at room temperature

＜0.127/＜0.127

Excellent/excellent

Cuprous sulfate

10

Boiling at room temperature

＜0.127/＜0.127

Excellent/excellent

30

Boiling at room temperature

＜0.127/＜0.127

Excellent/excellent

Silver nitrate

11

Room temperature /一

＜0.127/一

Excellent /一

organic acid

Concentration%

Temperature℃

Corrosion Rate Millimeters/Year

Corrosion resistance grade

acetic acid

100

Room temperature/boiling

0.000/0.000

Excellent/excellent

formic acid

50

Room temperature /一

0.000/一

excellent /一

Oxalic acid

5

Room temperature/boiling

0.127/29.390

Good/poor

10

Room temperature /一

0.008/一

excellent /一

Lactic acid

10

Room temperature/boiling

0.000/0.033

Excellent/excellent

25

Room temperature/boiling

/0.028

一/ excellent

Formic acid

10

一/ boiling

一/0.127

一/ Good

25

一/100

一/2.440

一/ poor

50

一/100

一/7.620

一/ poor

tannin

25

Room temperature/boiling

＜0.127/＜0.127

Excellent/excellent

Citric acid

50

Room temperature/boiling

＜0.127/＜0.127

Excellent/excellent

Stearic acid

100

Room temperature/boiling

＜0.127/＜0.127

Excellent/excellent

inorganic acid

Concentration%

Temperature℃

Corrosion Rate Millimeters/Year

Corrosion resistance grade

Hydrochloric acid

1

Room temperature/boiling

0.000/0.345

Excellent/Good

5

Room temperature/boiling

0.000/6.530

Good/bad

10

Room temperature/boiling

0.175/40.807

Good/poor

20

Room temperature /一

1.340/一

poor /一

35

Room temperature /一

6.660/一

poor /一

Sulfuric acid

5

Room temperature/boiling

00000/13.01

Good/poor

10

Room temperature /一

0.230/一

良好/一

40

Room temperature /一

1.80/一

poor /一

60

Room temperature /一

0.60/一

良好/一

80

Room temperature /一

15/一

poor /一

Nitric acid

37

Room temperature/boiling

00000/＜0.127

Excellent/excellent

64

Room temperature/boiling

00000/＜0.127

Excellent/excellent

95

Room temperature /一

0.0025/一

Excellent /一

Phosphoric acid

10

Room temperature/boiling

0.000/6.400

Excellent / poor

30

Room temperature/boiling

0.000/17.600

Excellent / poor

50

Room temperature /一

0.097/一

Excellent /一

chromic acid

20

Room temperature/boiling

＜0.127/＜0.127

Excellent/excellent

Nitric acid+hydrochloric acid

1:3

Room temperature/boiling

00000/＜0.127

Excellent/excellent

3:1

Room temperature /一

＜0.127/一

Excellent /一

Nitric acid+hydrochloric acid

7:3

Room temperature /一

＜0.127/一

Excellent /一

4:6

Room temperature /一

＜0.127/一

Excellent /一