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Corrosion Resistance of Stainless Steel

Technical Specifications

Corrosive
Conditions
Concentration Temperature SUS302 SUS316 SUS430 SUS410
( % ) ( ℃ ) SUS304 SUS420J1
Nitrous Acid 5 20 A A A D
Sulfurous Acid Saturation 20 C A※ C E
Ammonia Gas 20~310 A A A A
Ammonium
Hydroxide
Saturation 20~100 A A D -
Ink A※ A C -
Ethyl Alcohol 20~Boiling A A A A
Hydrochloric Acid All Concentrations 20~Boiling E E E E
Seawater A※ A※ C E
Fruit Juice A A A A
Hydrogen Peroxide 20 B A B B
Caustic Soda 50 20 A A A
Molten Salt 320 C A D -
Gasoline 20 A A A A
Developer 20 A A C D
Coffee Extract Boiling A A A A
Oxalic Acid 5 20 A A A B
10 20 A A B -
10 Boiling D A C -
Saline Solution 5 20~Boiling A A B B
Acetic Acid 5~50 20 A A A B
5~50 Boiling A A B C
65 Boiling B B C E
Sodium Carbonate 5~50 20 A A A A
5~50 Boiling A A A -
Adhesive 20 A※ A C -
Iodine E D E E
Ammonium Sulfate Solution 1~5 20 A A A B
Sulfuric Acid 5 20 A A B C
5 Boiling A A B -
10 20 A A B C
10 Boiling C B B C
Butter 20 A A A A
Paraffin 20 A A A A
Picric Acid 20 A A A -
Beer 20 A A A A
Hydrofluoric Acid 20 E E E E
Benzol 20 A A A A
Boric Acid 5 20 A A A -
Saturation Boiling A A B -
Milk 20 A A A A
Methyl Alcohol 20 A A A -
Boiling C B C -
Sulfuric Acid 5 20 C A D D
5 Boiling E C E E
10 20 C A C -
10 Boiling E D E E
50 20 D C - -
50 Boiling E D E E
Copper Sulfate 5 20 A A A A
Malic Acid A A - -
Phosphoric Acid 1~5 20 A A B C
1~5 Boiling C B B C
10 20 A A C C
10 Boiling C B B C

CAUTION : ※ Prevention of Pitting Corrosion


- Nomenclature & Definition of Symbols -

A: Top-Tier Corrosion Resistance - Corrosion Loss 0.1g/㎡/hr Under

B: Advanced Corrosion Resistance - Corrosion Loss 0.1g/㎡/hr Under

C: Moderate Corrosion Resistance - Corrosion Loss 0.1g/㎡/hr Under

D: Basic/Essential Corrosion Resistance - Corrosion Loss 0.1g/㎡/hr Under

E: Base-Level / Minimal Corrosion Resistance - Corrosion Loss 0.1g/㎡/hr Under