1. Material
New type of stainless steel with outstanding corrosion resistance
New STS400 steel material containing molybdenum (Mo)
Shows powerful corrosion resistance with less generation of rust due to chlorine gas
2. Technique
Bolt assembly, panel joint technique
Completely eliminates the issue of rust generation thanks to a non-welding bolt assembly technique
3. Structure
System that emphasizes external reinforcement
Minimized internal horizontal reinforcing materials by employing the external frame reinforcement method
1-3mh: 100% external reinforcement type (no internal reinforcing materials)
Greater than 3.5mh: Internal and external mixed reinforcement type (no reinforcing materials on the upper section)
Increased sanitation and convenience in cleaning
4. Comparison of corrosion resistance characteristics
Category | Characteristics of STS400 | Characteristics of STS300 |
---|---|---|
Impurities | Minimum amount having no effect on structural steel | Small amount having some effect on structural steel |
Processability | Fair to weak | Excellent |
Welding deformation | Excellent (less deformation) | Weak (significant effect of welding heat) |
Corrosion | Excellent (no effect on chlorine ion) | Weak (vulnerable against chlorine ion) |
Magnetism | Magnetic material | Non-magnetic material |
Grain boundary | Ferrite stainless steel | Ostenitic stainless steel |
Stress corrosion | Very excellent | Weak |
5. Chlorine immersion test
- Test solution: 4% chlorine solution, Test period: 50 days
STS444
NO RUST (50days)
STS436L
NO RUST (50days)
STS316
Rust occurred(a bit):
after 11day
Rust occurred(entire):
after 19day
STS304
Rust occurred(a bit):
after 4day
Rust occurred(entire):
after 10day