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Audited Supplier Duplex stainless steel that was developed to combat common corrosion problems encountered with the 300 series stainless steels . " Duplex " describes a family of stainless steels that are neither fully austenitic , like 304 stainless , nor purely ferritic , like 430 stainless . The advantage of a duplex structure is that it combines the favorable qualities of a ferritic alloy ( stress corrosion cracking resistance and high strength ) with those of an austenitic alloy ( ease of fabrication and corrosion resistance ) .
Use UNS32750 super duplex stainless steel pipes can improve corrosion resistance compared to other materials . And super duplex steel pipes have greater tensile and yield strength , good ductility and yield strength , good stress corrosion cracking resistance . Also can help clients reduce their purchase costs , but can gurantee the quality etc .
| Material Grade | S32205 , S31803 , S32304 , S32750, F51 , F53 , 2205 , 2507 etc |
| Outer Diameter |
10.3mm - 1219mm |
| Wall Thickness | 1.24mm - 54.59mm |
| Length | as per customer's requirement |
| Standard |
ASTM A789 ; ASTM A790 ; EN 10216-5ect . |
Application :
1 . Petroleum
2 . Chemical industry
3 . Instrument
4 . Industrial transportation
5 . Mechanical structure industry
6 . Need high corrision ability pipe's industry , such as offshore industry etc
| Chemical Composition | |||||||||
| Grade | C | Si | Mn | P | S | Cr | Ni | Mo | N |
| max | max | max | max | max | |||||
| UNS S32750 | 0.03 | 0.8 | 1.2 | 0.03 | 0.015 | 24.0-26.0 | 6.0-8.0 | 3.0-5.0 | 0.24-0.32 |
| UNS S31803 | 0.03 | 1 | 2 | 0.02 | 0.02 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 |
| 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 | / | ||||
Application
a) Petroleum
b) Chemical industry
c) Instrument
d) Industrial transportation
e) Mechanical structure industry
f) Need high corrision ability pipe's industry, such as offshore industry etc
Advantages
a) Superior surface finish,
b) Better mechanical property
c) More precise dimension
d) Perfect inspection method and inspection equipment
Price Item FOB, CFR, CIF or as negotiation
Payment T/T, LC or as negotiation
Delivery Time 30 working days after received your deposit (Normally according to the order quantity)
Package Iron case; woven bag or as per customer's requirement
Requirement Mill Test Certificate will be supplied with shipment, Third Part Inspection is acceptable
Quality Test NTD(Ultrasonic test, Eddy Current test);
Mechanical Test(Tension Test, Flaring Test, Flattening Test, Hardness Test, Hydraulic test);
Metal Test(Metallographic Analysis, Impact Test-High/low temperature);
Chemical Analysis(Photoelectric Emission Spectroscopic)
Main Market Europe, Middle East, Southeast Asia, South America. Etc
Packing:
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