Chemical Resistance
Hydrochloric acid, sulfuric acid, hydrofluoric acid...
We have screws with strong chemical resistance!!
- Chemical Resistance
Chemical Names Composition (%) Titanium Hydrochloric Acid 10 B 30 D Sulfuric Acid 10 C 50 D Nitric Acid 10 A 50 A Nitrohydrochloric Aid
(HCl:HNO3)3:1 A Chromic Acid 5 A Hydrofluoric Acid 5 D Phosphoric Acid 50 C Ferric Chloride 10~30 A Cupric Chloride 10~30 B Sodium Chloride 10~40 A Calcium Chloride 50 A Ammonium Chloride 40 A Magnesium Chloride 40 A Ferrous Sulfate 10~50 A Ammonia 10~30 A Sodium Hydroxide 50 A Sodium Carbonate 10 A Hydrogen Sulfide Dry Gas A Wet Gas A Chlorine Dry Gas D Wet Gas A Sulfur Dioxide Dry/Wet Gas A Seawater High Speed Stream A Formic Acid 10~50 B Lactic Acid 50 A Oxalic Acid 20 D Citric Acid 10~50 A Testing Temperature: Room Temperature
A：<0.127 mm/year
B：0.127~0.508 mm/year
C：0.508~1.27 mm/year
D：>1.27 mm/year
- Chemical Resistance for Hastelloy/Inconel/Nickel
Chemical Names Temperature Hastelloy Inconel Nickel Dilute Sulfuric Acid Room Temperature AA A A Boiling Point A D D Concentrate Sulfuric Acid Room Temperature AA C C Boiling Point D D D Dilute Hydrochloric Acid Room Temperature AA B A Boiling Point D D D Concentrate Hydrochloric Acid Room Temperature AA D D Boiling Point B D D Dilute Nitric Acid Room Temperature AA D D Boiling Point AA － D Concentrate Nitric Acid Room Temperature AA A D Boiling Point D － D Dilute Phosphoric Acid Room Temperature AA AA AA Boiling Point AA － D Concentrate Phosphoric Acid Room Temperature AA AA AA Boiling Point B － D Sodium Hydroxide (Diluted) Room Temperature － AA AA Boiling Point － C AA Sodium Hydroxide (Concentrated) Room Temperature － AA AA Boiling Point － C AA AA：Excellent
A ：Good
B ：Useable
C ：Useable under certain conditions
D ：Non Useable
- Chemical Resistance for Ceramic Screws
Chemical Names Temperature Time Ceramic 35% Hydrochloric Acid Boiling 30 minutes A 70% Sulfuric Acid Boiling 30 minutes A 98% Nitric Acid Boiling 30 minutes A 90% Phosphoric Acid Boiling 30 minutes B 60% Hydrofluoric Acid 20°C 24 hours C 10% Potassium Hydroxide 80°C 7 Days A Potassium Hydroxide 500°C(Boiling) 24 hours C Sodium Hydroxide 500°C(Boiling) 24 hours B Sodium Carbonate 900°C(Boiling) 24 hours B Sodium Sulfate 1000°C(Boiling) 24 hours A Potassium Fluoride 90°C(Boiling) 4 hours D A : No Corrosion
B : Slight Corrosion
C : Moderate Corrosion
D : Heavy Corrosion
- Chemical Resistance
Chemical Names PEEK PPS AURUM PTFE H-PVC RENY PC PP PVDF 10% Hydrochloric Acid A A A A A C A A A 10% Sulfuric Acid A A A A A C A A A 50% Sulfuric Acid C - C A A C B - A 10% Nitric Acid A A A A A C A A A 50% Nitric Acid C - C A B C B - B 10% Hydrofluoric Acid - - A A B C A A A 50% Hydrofluoric Acid C - C A B C B B A 10%Phosphoric Acid A - A A A C A A A Formic Acid B - - A B C A A A 10% Acetic Acid A A A A A C A A A Citric Acid A - A - A B A A A Chromic Acid A - - A A C A A A Boric Acid A - - A A B A A A Methyl Alcohol A A A A A - B - A Glycol A - A - - - A - A Ammonia A - A - A A C A A 10% Sodium Hydroxide A A A A A A - A A 10% Potassium Hydroxide A - A A A A C A A Calcium Hydroxide A - A - A C A A A Water A A A A A B A A A Hydrogen Sulfide(Gas) A - - - - A A A A Sulfur Dioxide A - - - - A A A A Ammonium Nitrate A - A - - A A A A Sodium Nitrate A - A - - A C A A Calcium Carbonate A - A - - A C A A Calcium Chloride A A A A A A A A A Magnesium Chloride A - A A A A A A A Magnesium Sulfate A - A - - A A A A Zinc Sulfate A - A - - A A A A Hydrogen Peroxide A - - A A B A A A A: Usable
B: Usable under certain conditions
C: Non-usable
• Data from samples tested at room temperature (23°C). Chemical Resistance values will vary according to usage conditions, Plastic Screws should be tested under actual performance conditions prior to use.
- Screws with Special Surface Treatment
Characteristics Material Feature Shape Size 
SNSS-RY SUSXM7
(SUS304 Equivalent)Seizing Prevention,
Chemical Resistance,
Reflection ResistantSocket Head Cap Screws M3~M10 
SNSS-TF SUSXM7
(SUS304 Equivalent)Chemical Resistance,
Seizing PreventionSocket Head Cap Screws M3~M10