ASTM A790 / ASTM A928 UNS S32750 Super Duplex Stainless Steel Pipe
Brand Name:YUHONG
Certification:ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001
Model Number:ASTM A790, ASTM A928 S32750
Minimum Order Quantity:1PC
Delivery Time:7 DAYS
Payment Terms:L/C,T/T
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Super Duplex Stainless Steel ASTM A790 & ASTM A928 UNS S32750 WELDED AND SEAMLESS PIPE
S32750 Super Duplex Pipe have enhanced pitting and crevice corrosion resistance when compared with 300-series austenitic stainless steel or conventional duplex alloys. This can be attributed to the enhanced levels of chromium, molybdenum and nitrogen found in these materials. Alloy 2507 is the most common “super” duplex grade.
UNS 31803 (F51), UNS 32205 (F60) Alloy 2205, UNS S32550 (F61), UNS S 32750 (F53), Alloy 2507 and UNS 32760 (F55)
Standards: ASTM/ASME A789/SA789, A790/SA790,A450,A530
Material: UNS S31803(Cr22Ni5Mo3/1.4462)/2205,UNS S32750(1.4410),UNS S31500(Cr18NiMo3Si2),
UNS32760(1.4501)
Usage of Duplex 2507 Pipe S32750 Stainless Steel:
It should be limited to applications below 6000 F (3160 C).
Extended elevated temperature exposure can reduce both the
toughness and corrosion resistance of alloy 2507.The high chromium,
molybdenum, and nitrogen levels provide excellent resistance to
pitting, crevice, and general corrosion. The duplex structure
provides 2507 with exceptional resistance to chloride stress
corrosion cracking.
S32750 Super Duplex Pipe possesses excellent mechanical properties. Often
a light gauge of S32750 Stainless Steel can be used to achieve the
same design strength of a thicker nickel alloy. The resulting
saving in weight can reduce the overall cost of fabrication.
Chemical Composition:
| Grade | C max | Si max | Mn max | P max | S max | Cr | Ni | Mo | N |
| UNS S32750 | 0.030 | 0.8 | 1.2 | 0.030 | 0.015 | 24.0-26.0 | 6.0-8.0 | 3.0-5.0 | 0.24-0.32 |
| UNS S31803 | 0.030 | 1.0 | 2.0 | 0.020 | 0.020 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 |
| UNS S31500 | 0.030 | 1.0 | 1.2-2.0 | 0.030 | 0.030 | 18.0-19.0 | 4.5-5.5 | 2.5-3.5 | 0.05-0.10 |
Physical Properties:
| Grade | Y.S.MPa min | T.S.Mpa min | Elongation % | Hardness HRC |
| UNS S32750 | 550 | 800 | 15 | 20 |
| UNS S31803 | 450 | 620 | 25 | 20 |
| UNS S31500 | 440 | 630 | 30 | 20 |
Duplex Stainless Steel Pipe Application:
Chemical processing, Transport and Storage.
Oil and gas exploration and offshore rigs.
Oil and gas refining.
Marine environments.
Pollution control equipment.
Pulp and paper manufacturing
Chemical process Plant
ASTM A790 / ASTM A928 UNS S32750 Super Duplex Stainless Steel Pipe
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