Media

Concentration（Mass fraction）（%）

Temperature/℃

Corrosion rate/mm/a(Years)

Corrosion level

Inorganic acid

Hydrochloric acid

1

Room temperature/Boiling

0.000/0.345

Excellent/Good

5

Room temperature/Boiling

0.000/6.530

Excellent/Poor

10

Room temperature/Boiling

0.175/40.87

Good/Poor

20

Room temperature/—

1.340/—

Poor/—

35

Room temperature/—

6.660/—

Poor/—

Sulfuric acid

5

Room temperature/Boiling

0.000/13.01

Excellent/Poor

10

Room temperature/—

0.230/—

Good/—

60

Room temperature/—

0.277/—

Good/Poor

80

Room temperature/—

32.660/—

Poor/—

95

Room temperature/—

1.400/—

Poor/—

Nitrate

37

Room temperature/Boiling

0.000/<0.127

Excellent/Excellent

64

Room temperature/Boiling

0.000/<0.127

Excellent/Excellent

95

Room temperature/—

0.0025/—

Excellent/—

Phosphate

10

Room temperature/Boiling

0.000/6.400

Excellent/Poor

30

Room temperature/Boiling

0.000/17.600

Excellent/Poor

50

Room temperature/—

0.097/—

Excellent/—

Chromic acid

20

Room temperature/Boiling

<0.127/<0.127

Excellent/Excellent

Nitrate + Hydrochloric acid

1:3

Room temperature/Boiling

0.0040/0.127

Excellent/Excellent

3:1

Room temperature/—

<0.127/—

Excellent/—

Nitrate + Sulfuric acid

7:3

Room temperature/—

<0.127/—

Excellent/—

4:6

Room temperature/—

<0.127/—

Excellent/—

Organic acids

Acetic acid

100

Room temperature/Boiling

0.000/0.000

Excellent/Excellent

Formic acid

50

Room temperature/—

0.000/—

Excellent/—

Oxalic acid

5

Room temperature/Boiling

0.127/29.390

Good/Poor

10

Room temperature/—

0.008/—

Excellent/—

Lactic acid

10

Room temperature/Boiling

0.000/0.033

Excellent/Excellent

25

—/Boiling

—/0.028

—/Excellent

Formic acid

10

—/Boiling

—/1.270

—/Good

25

—/100

—/2.440

—/Poor

50

—/100

—/7.620

—/Poor

Dan lemon acid

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

Alkaline solution

Sodium hydroxide

10

—/Boiling

—/0.020

—/Excellent

20

Room temperature/Boiling

<0.127/<0.127

Excellent/Excellent

50

Room temperature/Boiling

<0.0025/0.0508

Excellent/Excellent

73

—/Boiling

—/0.127

—/Good

Potassium hydroxide

10

—/Boiling

—/<0.127

—/Excellent

25

—/Boiling

—/0.305

—/Good

50

30/Boiling

0.000/2.743

Excellent/Poor

Ammonium hydroxide

28

Room temperature/—

0.0025/—

Excellent/—

Sodium carbonate

20

Room temperature/Boiling

<0.127/<0.127

Excellent/Excellent

Ammonia

20

Room temperature/—

0.0708/—

Excellent/—

Inorganic salt solution

Ferric chloride

40

Room temperature/95

0.000/0.002

Excellent/Excellent

Ferrous chloride

30

Room temperature/Boiling

0.000/<0.127

Excellent/Excellent

Chloride

10

<0.127/<0.127

Cuprous chloride

50

<0.127/<0.127

Ammonium chloride

10

<0.127/<0.000

Calcium chloride

10

<0.127/<0.000

Aluminum chloride

25

<0.127/<0.127

Magnesium chloride

10

<0.127/<0.127

Nickel chloride

5-10

<0.127/<0.127

Barium chloride

20

<0.127/<0.127

Copper sulfate

20

<0.127/<0.127

Ammonium sulfate

20℃Saturation

<0.127/<0.127

Sodium

50

<0.127/<0.127

Lead sulfate

20℃Saturation

<0.127/<0.127

Sulfuric acid cuprous

10

<0.127/<0.127

30

<0.127/<0.127

Silver nitrate

11

Room temperature/—

<0.127/—

Excellent/—

Organic compounds

Benzene（Contained traces of HCl、NaCl）

Vapor and liquid

80

0.005

Excellent

Carbon tetrachloride

Vapor and liquid

Boiling

0.005

Tetrachloroethylene（Stable）

100% Vapor and liquid

0.0005

Tetrachloroethylene（H2O）

0.0005

Chloroform

0.003

Chloroform（H2O）

0.127

Good

Trichlorethylene

99% Vapor and liquid

0.00254

Excellent

Trichlorethylene（Stable）

99

0.00254

Formaldehyde

37

0.127

Good

Formaldehyde（Contain 2.5%H2SO4）

50

0.305

Good