Seamless construction per ASTM A312 – no weld seam; uniform wall thickness; hydrotested & PMI verified
Multiple grades available – 304/304L, 316/316L, 321, 347, 310S, duplex 2205/2507, 904L
Wide size range – NPS 1/8″ to 24″; SCH 5S to 160S; custom lengths; AP, BA, MP, EP finishes
Super Duplex 2507 (UNS S32750) is an advanced duplex stainless steel with higher chromium, molybdenum, and nitrogen content than 2205. It provides exceptional corrosion resistance and mechanical strength.
Key Features
- Superior resistance to pitting and crevice corrosion
- Excellent performance in seawater
- High mechanical strength
- Long service life in harsh environments
Applications
- Offshore platforms
- Seawater systems
- Chemical industry
- Desalination plants
2507 vs 2205
2507 offers better corrosion resistance and strength than 2205, making it suitable for more aggressive environments.
Looking for a reliable Duplex 2507 stainless steel pipe supplier?
Contact us now for a quotation
Email: sales@hengyimetal.com
WhatsApp: +86 19521258704
View more stainless steel products
316L vs 304 guide
316L vs 2205 guide
316L vs 17-4PH
Pipe for Heat Exchanger: Materials, Types and Selection Guide
duplex stainless steel for oil and gas
FAQ
Q: What is 2507 duplex pipe used for?
A: It is used in oil & gas, marine, and chemical industries requiring high strength and corrosion resistance.
Q: What is the difference between 2507 and 316 pipe?
A: 2507 has higher strength and better resistance to chloride corrosion compared to 316.
| ASTM/ASMEGrade | EN Grade | GB Unified Number | Chemical Component % | ||||||||||
| C | Cr | Ni | Mn | P | S | Mo | Si | Cu | N | Other | |||
| 201 | 1.4372 | 1Cr17Mn6Ni5N | ≤0.15 | 16.00-18.00 | 3.50-5.50 | 5.50－7.50 | ≤0.060 | ≤0.030 | – | ≤1.00 | – | ≤0.25 | – |
| 202 | 1.4373 | 1Cr18Mn8Ni5N | ≤0.15 | 17.00-19.00 | 4.00-6.00 | 7.50-10.00 | ≤0.060 | ≤0.030 | ≤1.00 | – | ≤0.25 | － | |
| 301 | 1.4310 | 1Cr17Ni7 | ≤0.15 | 16.00-18.00 | 6.00-8.00 | ≤2.00 | ≤0.045 | ≤0.030 | – | ≤1.00 | – | 0.1 | – |
| 302 | 1.4325 | 1Cr18Ni9 | ≤0.15 | 17.00-19.00 | 8.00-10.00 | ≤2.00 | ≤0.035 | ≤0.030 | – | ≤1.00 | – | – | – |
| 303 | 1.4305 | Y1Cr18Ni9 | ≤0.15 | 17.00-19.00 | 8.00-10.00 | ≤2.00 | ≤0.20 | ≥0.15 | – | ≤1.00 | – | – | – |
| 304 | 1.4301 | 0Cr18Ni9 | ≤0.08 | 18.00-20.00 | 8.00-10.00 | ≤2.00 | ≤0.045 | ≤0.030 | – | ≤0.75 | – | – | – |
| 304L | 1.4307 | 00Cr19Ni10 | ≤0.030 | 18.00-20.00 | 8.00-10.00 | ≤2.00 | ≤0.045 | ≤0.030 | – | ≤0.75 | – | – | – |
| 304H | 1.4948 | 0Cr18Ni9 | 0.04~0.10 | 18.00-20.00 | 8.00-10.00 | ≤2.00 | ≤0.045 | ≤0.030 | – | ≤0.75 | – | – | – |
| 309S | 1.4833 | 0Cr23Ni13 | ≤0.08 | 22.00-24.00 | 12.00-15.00 | ≤2.00 | ≤0.045 | ≤0.030 | – | ≤0.75 | – | – | – |
| 309 | 1.4828 | 0Cr23Ni13 | 0.04~0.10 | 22.00-24.00 | 12.00-15.00 | ≤2.00 | ≤0.045 | ≤0.030 | – | ≤0.75 | – | – | – |
| 310S | 1.4842 | 0Cr25Ni20 | ≤0.08 | 24.00-26.00 | 19.00-22.00 | ≤2.00 | ≤0.045 | ≤0.030 | – | ≤1.5 | – | – | – |
| 310H | 1.4821 | 0Cr25Ni20 | 0.04~0.10 | 24.00-26.00 | 19.00-22.00 | ≤2.00 | ≤0.045 | ≤0.030 | – | ≤1.5 | – | – | – |
| 314 | 1.4841 | 0Cr25Ni20Si | ≤0.25 | 23.00-26.00 | 19.00-22.00 | ≤2.00 | ≤0.045 | ≤0.030 | – | 1.5-3.0 | – | – | – |
| 316 | 1.4401 | 0Cr17Ni12Mo2 | ≤0.08 | 16.00-18.50 | 10.00-14.00 | ≤2.00 | ≤0.045 | ≤0.030 | 2.00-3.00 | ≤0.75 | – | – | – |
| 316L | 1.4404 | 00Cr17Ni14Mo2 | ≤0.030 | 16.00-18.00 | 10.00-14.00 | ≤2.00 | ≤0.045 | ≤0.030 | 2.00-3.00 | ≤0.75 | – | – | – |
| 316H | 1.4436 | 0Cr17Ni12Mo2N | 0.04~0.10 | 16.00-18.00 | 10.00-14.00 | ≤2.00 | ≤0.045 | ≤0.030 | 2.00-3.00 | ≤0.75 | – | 0.10-0.22 | – |
| 316Ti | 1.4571 | 0Cr17Ni12Mo2Ti | ≤0.08 | 16.00-18.50 | 10.00-14.00 | ≤2.00 | ≤0.045 | ≤0.030 | 2.00-3.00 | ≤0.75 | – | – | Ti5(C+N)~0.7 |
| 317 | 1.4445 | 0Cr19Ni13Mo3 | ≤0.08 | 18.00-20.00 | 11.00-15.00 | ≤2.00 | ≤0.045 | ≤0.030 | 3.00-4.00 | ≤0.75 | – | 0.1 | – |
| 317L | 1.4438 | 00Cr19Ni13Mo3 | ≤0.03 | 18.00-20.00 | 11.00-15.00 | ≤2.00 | ≤0.045 | ≤0.030 | 3.00-4.00 | ≤0.75 | – | 0.1 | – |
| 321 | 1.4541 | 0Cr18Ni10Ti | ≤0.08 | 17.00-19.00 | 9.00-12.00 | ≤2.00 | ≤0.045 | ≤0.030 | – | ≤0.75 | – | 0.1 | Ti5(C+N)~0.7 |
| 321H | 1.4940 | 0Cr18Ni10Ti | 0.04~0.10 | 17.00-19.00 | 9.00-12.00 | ≤2.00 | ≤0.045 | ≤0.030 | – | ≤0.75 | – | 0.1 | Ti4(C+N)~0.7 |
| 329 | 1.4480 | 0Cr26Ni5Mo2 | ≤0.08 | 23.00-28.00 | 2.00-5.00 | ≤1.00 | ≤0.040 | ≤0.030 | 1.00-2.00 | ≤0.75 | – | – | – |
| 329J1 | 1.4480 | 0Cr26Ni5Mo2 | ≤0.08 | 23.00-28.00 | 2.00-5.00 | ≤1.00 | ≤0.045 | ≤0.030 | 1.00-2.00 | ≤0.75 | – | – | – |
| 330 | 1.4864 | N08330 | ≤0.15 | 14.00-17.00 | 33.00-37.00 | ≤2.00 | ≤0.045 | ≤0.040 | 1.00-2.00 | ≤1.5 | – | – | – |
| 347 | 1.4550 | 0Cr18Ni11Nb | ≤0.08 | 17.00-19.00 | 9.00-13.00 | ≤2.00 | ≤0.045 | ≤0.030 | – | ≤0.75 | – | – | Nb≥10*C%-1.0 |
| 347H | 1.4912 | 0Cr18Ni11Nb | 0.04~0.10 | 17.00-19.00 | 9.00-13.00 | ≤2.00 | ≤0.045 | ≤0.030 | – | ≤0.75 | – | – | Nb≥8*C%-1.0 |
| 409L | 1.4720 | S40900 | ≤0.03 | 10.50-11.70 | 0.5 | ≤1.00 | ≤0.040 | ≤0.020 | – | ≤1.00 | – | 0.03 | Ti6(C+N)-0.5 Nb0.17 |
| 430 | 1.4016 | S43000 | ≤0.12 | 16.00-18.00 | 0.75 | ≤1.00 | ≤0.040 | ≤0.030 | – | ≤1.00 | – | – | – |
| 436 | 1.4513 | S43600 | ≤0.025 | 16.00-19.00 | – | ≤1.00 | ≤0.040 | ≤0.030 | 0.75-1.0 | ≤1.00 | ≤0.025 | Nb+Ti:8(C+N)~0.80 | |
| 439 | 1.4510 | S43035 | ≤0.030 | 17.50-18.50 | – | ≤1.00 | ≤0.040 | ≤0.015 | – | ≤1.00 | – | ≤0.030 | Ti+Nb:0.2+4C~0.75 |
| 441 | 1.4509 | S44100 | ≤0.030 | 17.50-18.50 | – | ≤1.00 | ≤0.040 | ≤0.015 | – | ≤1.00 | – | ≤0.030 | Ti:0.1-0.6 Nb:3C+0.3~1.0 |
| 442 | 1.4741 | S44200 | ≤0.025 | 18.0-23.0 | – | ≤1.00 | ≤0.040 | ≤0.035 | – | ≤1.00 | – | ||
| 443 | S44300 | ≤0.025 | 19.5-22.0 | – | ≤1.00 | ≤0.035 | ≤0.015 | – | ≤1.00 | – | ≤0.025 | Nb+Ti:0.2+4(C+N)~0.75 | |
| 444 | 1.4521 | S44400 | ≤0.025 | 17.00-20.00 | – | ≤1.00 | ≤0.040 | ≤0.030 | 1.75-2.5 | ≤1.00 | ≤0.035 | Ti+Nb:0.2+4(C+N)~0.8 | |
| 446 | 1.4749 | S44600 | ≤0.2 | 23.0-27.0 | 0.75 | ≤1.50 | ≤0.040 | ≤0.030 | – | ≤1.00 | 0.25 | ||
| 410 | 1.4006 | 1Cr13 | 0.08~0.15 | 11.50-13.50 | – | ≤1.00 | ≤0.040 | ≤0.030 | – | ≤1.00 | – | – | – |
| 420 | 1.4031 | 2Cr13 | ≥0.15 | 12.00-14.00 | – | ≤1.00 | ≤0.040 | ≤0.030 | – | ≤1.00 | – | – | – |
| 420J2 | 1.4028 | 3Cr13 | 0.26-0.35 | 12.00-14.00 | – | ≤1.00 | ≤0.040 | ≤0.030 | – | ≤1.00 | – | – | – |
| S42040 | 1.4034 | 4Cr13 | 0.36-0.45 | 12.00-14.00 | – | ≤1.00 | ≤0.040 | ≤0.030 | – | ≤1.00 | – | – | – |
| 431 | 1.4057 | 1Cr17Ni2 | ≤0.2 | 15.00-17.00 | 1.25-2.50 | ≤1.00 | ≤0.040 | ≤0.030 | – | ≤1.00 | – | – | – |
| 440A | 1.4040 | 7Cr17 | 0.60-0.75 | 16.00-18.00 | – | ≤1.00 | ≤0.040 | ≤0.030 | 0.75 | ≤1.00 | – | – | – |
| 440B | 1.4041 | 8Cr17 | 0.75-0.95 | 16.00-18.00 | – | ≤1.00 | ≤0.040 | ≤0.030 | 0.75 | ≤1.00 | – | – | – |
| 440C | 1.4023 | 11Cr17 | 0.95-1.20 | 16.00-18.00 | – | ≤1.00 | ≤0.040 | ≤0.030 | 0.75 | ≤1.00 | – | – | – |
| 17-4PH | 1.4542 | 630 | ≤0.07 | 15.50-17.50 | 3.00-5.00 | ≤1.00 | ≤0.040 | ≤0.030 | – | ≤1.00 | 3.00-5.00 | – | Nb+Ta:0.15-0.45 |
| 17-7PH | 1.4568 | 631 | ≤0.09 | 16.00-18.00 | 6.50-7.50 | ≤1.00 | ≤0.040 | ≤0.030 | – | ≤1.00 | – | – | Al 0.75-1.50 |
| 15-5PH | 1.4545 | S15500 | ≤0.09 | 14.00-15.50 | 3.50-5.50 | ≤1.00 | ≤0.040 | ≤0.030 | 2.00-3.00 | ≤1.00 | 2.50-4.50 | – | |
| 416 | 1.4005 | Y1Cr13 | ≤0.15 | 12.00-14.00 | – | ≤1.25 | ≤0.06 | ≥0.15 | – | ≤1.00 | – | – | – |
| 420F | 1.4029 | Y3Cr13 | 0.3-0.40 | 12.00-14.00 | 0.5 | ≤1.25 | ≤0.06 | ≥0.15 | – | ≤1.00 | 0.6 | – | – |
| 430F | 1.4019,1.4104 | Y1Cr17 | ≤0.12 | 16.00-18.00 | – | ≤1.25 | ≤0.06 | ≥0.15 | – | ≤1.00 | – | – | – |
| 440F | 1.4025 | Y11Cr17 | 0.95-1.20 | 16.00-18.00 | – | ≤1.25 | ≤0.06 | ≥0.15 | – | ≤1.00 | – | – | – |
| 303 | 1.4305 | S30317 | ≤0.15 | 17.00-19.00 | 8.00-10.00 | ≤2.00 | ≤0.20 | ≥0.15 | – | ||||
