Jiugang Group has worked together with a well-known domestic special steel supplier to successfully introduce Jiugang S31254 super austenitic stainless steel into the European market. This major breakthrough marks that domestic high-end stainless steel materials have officially entered the European high-end equipment manufacturing supply chain, breaking the long-standing monopoly of companies in Europe, Japan and other places in this field.
1. Cooperation & Market Breakthrough
- Collaborator: Jiugang Group + a well-known domestic special steel supplier
- Achievements: Successfully launched S31254 super austenitic stainless steel into the European market
- Significance: Marks domestic high-end stainless steel formally entering the European high-end equipment manufacturing supply chain; breaks the long-term monopoly of European and Japanese enterprises in this field
2. Cooperation Opportunity
- Trigger: A European food machinery manufacturing enterprise had demand for a new project
- Core Need: Stainless steel materials with stable performance under high-temperature and high-corrosion environments
- Selection Process: The enterprise conducted global supplier screening; Jiugang's S31254 stood out and entered the candidate list due to excellent corrosion resistance and mechanical properties
3. Challenges & Solutions
3.1 Customer Doubts
- Doubt Point: European customers questioned the performance of domestic stainless steel under extreme working conditions
- Response: Jiugang's technical team provided detailed data and rigorous test results, explaining that S31254 adopts a face-centered cubic crystal structure (ensuring good toughness and ductility) and has passed international standard tests (e.g., salt spray test, intergranular corrosion test)
3.2 Certification Barriers
- Strict Standards: EU EN10204 3.1 certification + carbon footprint accounting
- Demonstrated full-process low-carbon metallurgy technology
- Possesses dual-track certification of ASME/ASTM and EN10204 3.1
- Carbon footprint tracing system meets European environmental standards
4. Cooperation Progress
- Communication & Testing Period: Over 4 months (multiple rounds of technical exchanges + strict third-party testing)
- Current Result: The first batch of S31254 samples passed tests and gained customer recognition
- Future Assessment: European market requires a 3-year supplier qualification period (assessing product consistency, delivery reliability, service responsiveness, etc.); Jiugang stated it has a sound quality control and supply chain system to meet requirements
5. Performance of S31254 Super Austenitic Stainless Steel
5.1 Chemical Composition Advantages
- Low carbon content: Reduces carbide precipitation; improves corrosion resistance
- High chromium content: Forms a dense chromium oxide film on the material surface to block corrosive media
- High nickel content: Stabilizes the austenitic structure; enhances toughness and ductility
- High molybdenum content: Significantly improves pitting and crevice corrosion resistance (especially excellent in halide-containing environments)
- Nitrogen element: Increases material strength and hardness; positively impacts corrosion resistance
- Appropriate copper content: Improves corrosion resistance and optimizes processing performance
5.2 Physical Properties
- Melting point: 1320-1390℃
- Magnetism: Non-magnetic or weakly magnetic at room temperature
5.3 Mechanical Properties
- Tensile strength: ≥650MPa
- Hardness: Usually 182-223 (HB)
5.4 Corrosion Resistance
- Excellent performance in resisting pitting, crevice, and intergranular corrosion
- Corrosion resistance in acidic media (especially halide-containing acids) is comparable to Hastelloy and titanium
