Products Description
Our Advantages
1. Corrosion Resistance
- Our UNS S31254 pipe is made of high-quality super austenitic stainless steel, resistant to various corrosive environments, including chlorides, seawater, and acidic solutions.
- Salt spray and intergranular corrosion tests ensure excellent corrosion resistance, making it ideal for applications such as chemical processing and seawater treatment.
2. Excellent Weldability
- Our UNS S31254 pipe can be welded using standard stainless steel methods, such as TIG, MIG, and SAW, without the need for heat treatment.
- After welding, it passes ultrasonic and hydrostatic pressure testing, ensuring a smooth inner surface and no risk of leaks, making it ideal for heat exchangers, condensers, and piping systems.
3. Dimensional Specifications and Supply Flexibility
- We can customize pipe dimensions and specifications according to customer requirements, ensuring compatibility with your required piping systems.
- With an annual production capacity of 24,000 tons, we can guarantee sufficient supply and meet the needs of both large and small orders.
4. Packaging and Shipping
- We offer packaging options such as plastic caps, plastic film, woven bags, and wooden boxes/iron frames to prevent damage or contamination during transport.
- We offer a variety of shipping options, including sea, air, and land transportation, and we can also provide samples.
application areas
- Seawater cooling and desalination systems
- Chemical and petrochemical process piping
- Heat exchangers, condensers, and evaporators
- Pulp and paper bleaching plants
- Offshore oil and gas platforms and vessel equipment
Chemical Composition
| Element | C | Mn | P | S | Si | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|---|
| UNS S31254 | ≤0.02 | ≤1.0 | ≤0.03 | ≤0.01 | ≤0.8 | 19.5–20.5 | 17.5–18.5 | 6.0–6.5 | 0.18–0.22 |
Mechanical Properties
| Property | Tensile Strength | Yield Strength (0.2% Offset) | Elongation | Hardness |
| Value | ≥650 MPa | ≥300 MPa | ≥35% | ≤270 HBW |
Possible Alternative Grades
| Alternative Grades | Reasons |
| Alloy 904L (UNS N08904) | Good corrosion resistance, but lower strength than S31254. |
| Alloy 20 (UNS N08020) | Suitable for sulfuric acid environments. |
| Duplex UNS S32205 / S31803 | Excellent strength and moderate corrosion resistance. |
Products Show
Testing Equipment
Factory Equipment
Pickling equipment
Products Package
FAQ
Q: What is UNS S31254 stainless steel?
A: UNS S31254 is a super austenitic stainless steel with high molybdenum (6%), high nitrogen, and high chromium content. Its main characteristics include excellent resistance to pitting corrosion, crevice corrosion, and chloride stress corrosion cracking, high mechanical strength, and long-term durability in harsh chemical environments.
Q: How does S31254 compare to 316L stainless steel?
A: Compared to 316L stainless steel, S31254 stainless steel has higher resistance to pitting and crevice corrosion, especially in chloride-rich environments.
Q: What shapes and sizes are available?
A: S31254 steel pipes can be manufactured as seamless or welded pipes, and the outer diameter, wall thickness, and surface treatment can be customized according to customer requirements.
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