Stainless steel 2507 pipe tube manufacturer supplier. Contact us to get free quote and sample!
Stainless Steel 2507 (UNS S32750), a super duplex stainless steel, is chosen for industrial applications when operating conditions push standard austenitic (e.g., 304, 316) or even standard duplex (e.g., 2205) steels beyond their limits. Its exceptional combination of strength and corrosion resistance makes it indispensable in highly aggressive environments. HT PIPE is a super duplex s32750 pipe manufacturer supplier. Contact us to get free quote and sample!
strength of 2507 pipe
2507 pipe The ultimate barrier against extreme corrosion
The ability to resist chloride ion failure is its most outstanding advantage. In the hot and humid marine atmosphere with a chloride concentration of more than 20,000ppm, the annual pitting depth is controlled within 0.02mm (ASTM G48 verification). When exposed to acidic oil and gas media containing hydrogen sulfide, the ability to resist stress corrosion cracking is more than 20 times that of 304 stainless steel. Its resistance to crevice corrosion is also excellent, with a weight loss rate of only 0.8mg/cm² at 40℃. This feature is supported by the ultra-high PREN value (≥42) - through the synergistic effect of chromium (25%), molybdenum (4%), and nitrogen (0.3%), a dense passivation film is formed.
s32750 Double strength engineering revolution
The yield strength of 550MPa is equivalent to 2.3 times the strength of 316L material. In the case of deep-sea oil and gas pipelines, this feature allows the wall thickness to be reduced by 30% and still withstand a working pressure of 8MPa. At the same time, it maintains an impact toughness of more than 100J at -50℃. This balance of high strength and toughness enables the pipeline to achieve safe weight reduction in extreme scenarios such as Arctic LNG carriers.
2507 steel pipe Cost advantage of the entire life cycle
Although the initial cost is three times that of 316L, the life in corrosive media can be extended by 5-8 times. In the high-pressure reverse osmosis desalination system, its anti-erosion corrosion characteristics make thin-wall design possible, reducing material consumption by 25%.
uns s32750 tube Triple guarantee of reliability
Self-balanced dual-phase structure: The ratio of ferrite to austenite is about 1:1, which not only inhibits intergranular corrosion but also blocks the crack propagation path
Nitrogen alloying strengthening: interstitial solid solution nitrogen elements increase the repassivation rate, allowing the damaged passivation film to be repaired within 0.1 seconds
High temperature stability: short-term heat resistance can reach 300℃, and the oxidation resistance is better than austenitic steel in sulfur-containing flue gas
When NOT to Choose 2507:
- For mild environments where 304L or 316L provide adequate service life at much lower cost.
- In strongly reducing acids (e.g., sulfuric acid <10% concentration at room temp) without oxidizing contaminants – 316L or alloys with higher Mo/Cu might be better or cheaper.
- Where very high formability is required (austenitics are superior).
- If fabrication capabilities for duplex steels are lacking or uncontrolled.
