S31500 / 1.4417 Duplex Stainless Steel
S31500, also known by its European designation 1.4417, is a specialized Duplex Stainless Steel characterized by its excellent combination of high strength and superior corrosion resistance. As a leading manufacturer in the global steel industry, FUSHUN SPECIAL STEEL is dedicated to producing this high-performance alloy to meet the rigorous demands of modern engineering. Unlike standard austenitic steels, S31500 offers a microstructure consisting of both austenite and ferrite, providing double the yield strength of conventional grades like 304 or 316.
At FUSHUN SPECIAL STEEL, we utilize advanced smelting technologies to ensure the purity and consistency of our S31500 material. This grade is particularly effective in environments containing chlorides and hydrogen sulfide, making it a preferred choice for critical industrial applications. We welcome bulk orders from global clients who require reliable material sources directly from the manufacturer.
1. Applications and Usage
Due to its robust resistance to stress corrosion cracking and pitting, S31500 / 1.4417 is extensively used in:
Used for pressure vessels, heat exchangers, storage tanks, and piping systems handling aggressive chemicals.
Ideal for underwater components, desalination plants, and structural parts exposed to seawater environments.
Utilized in digesters, bleaching equipment, and stock-handling systems where corrosion resistance is paramount.
Used in load-bearing structures for bridges and coastal buildings requiring high strength-to-weight ratios.
2. Chemical Composition (S31500 / 1.4417)
Precise chemical control is vital for the performance of duplex stainless steel. FUSHUN SPECIAL STEEL strictly adheres to international standards to ensure the optimal balance of Ferrite and Austenite phases.
| Grade | C | Si | Mn | P | S | Cr | Mo | Ni | N |
|---|---|---|---|---|---|---|---|---|---|
| S31500 / 1.4417 | ≤0.03 | ≤1.00 | 1.20-2.00 | ≤0.030 | ≤0.030 | 21.0-23.0 | 2.5-3.5 | 4.5-6.5 | 0.05-0.20 |
3. Mechanical Properties
The mechanical properties of S31500 produced by FUSHUN SPECIAL STEEL demonstrate high tensile strength and good ductility.
| Property | Metric Value | Unit |
|---|---|---|
| Tensile Strength (Rm) | ≥ 650 | MPa |
| Yield Strength (Rp0.2) | ≥ 450 | MPa |
| Elongation (A) | ≥ 25 | % |
| Hardness (HB) | ≤ 290 | HBW |
4. Heat Treatment
Proper heat treatment is crucial to restoring the balance of the duplex microstructure after hot working. FUSHUN SPECIAL STEEL performs precise in-house heat treatment to ensure the material meets all mechanical and corrosion resistance requirements.
Solution Annealing
Temperature: 1020°C – 1100°C
Cooling: Rapid cooling (Water Quench) is required to prevent the formation of detrimental phases such as sigma phase, which can embrittle the steel and reduce corrosion resistance.
5. Equivalent Grades & Standards
We manufacture S31500 / 1.4417 to meet various international standards, ensuring compatibility for global projects.
| Region | Standard | Grade |
|---|---|---|
| USA | ASTM / UNS | S31500 |
| Europe / Germany | DIN / EN | 1.4417 / X2CrNiMoN22-5-3 |
| China | GB | 022Cr21Ni5Mo3N |
6. Supply Forms & Dimensions
As a comprehensive manufacturer, FUSHUN SPECIAL STEEL offers a wide range of supply forms. We can produce Hot Rolled and Hot Forged materials tailored to your specific project needs. If you have special size requirements, please contact us for a consultation.
Round Bar
- Hot Rolled: Dia 10mm – 120mm
- Hot Forged: Dia 130mm – 800mm
- Surface: Black, Peeled, Polished, Turned
Flat Bar & Plate
- Thickness: 10mm – 300mm
- Width: 50mm – 800mm
- Length: Fixed lengths or random lengths up to 6 meters
Wire & Custom Shapes
We also supply wire coils and custom forged shapes (discs, rings, blocks) based on customer drawings. We specialize in large-scale production for bulk orders.
7. Why Choose FUSHUN SPECIAL STEEL?
We are not just a supplier; we are a manufacturer with full control over the production process. Here are our key advantages:
We utilize Electric Slag Remelting (ESR), Vacuum Induction Melting (VIM), and Vacuum Arc Remelting (VAR) technologies. This ensures our S31500 steel has high purity, low inclusion levels, and superior internal structure for critical applications.
Our facility is equipped with modern heat treatment furnaces. We perform solution annealing and aging processes internally, guaranteeing stable quality, uniform mechanical properties, and faster delivery times for your orders.
To save our downstream customers time and cost, we offer value-added services including turning, peeling, milling, and grinding. You receive material that is ready for immediate use or final finishing.
Buying directly from FUSHUN SPECIAL STEEL means no middleman markups. We specialize in large-scale manufacturing and welcome bulk orders, ensuring competitive pricing and consistent supply for long-term projects.
Ready to Order S31500 / 1.4417 Steel?
Trust FUSHUN SPECIAL STEEL for high-quality duplex stainless steel. Contact our sales team today for a quote.
