Uns32550 1.4507 Super Duplex Steel Seamless Pipe and Tube ASTM A790/ASME SA790 Anti-Corrosion Steel

• Type: Seamless
• Technique: Cold Rolled
• Material: Super Duplex Stainless Steel
• Surface Treatment: Pickling and Annealing
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Model NO.: OD: 6-457 MM, WT: 1-30MM
• Transport Package: Knitting Strips, Plywood Case
• Specification: OD: 1/2"--18", WT: 10S--XXS
• Trademark: XTD
• Origin: China
• HS Code: 7304419000
• Production Capacity: 15000 Tons/Year

Product Description

Chemical Composition

Grade	C	Mn	P	S	Si	Ni	Cr	Mo	N	Cu
S32550	≤0.04	≤1.5	≤0.040	≤0.03	≤1.0	4.5-6.5	24.0-27.0	2.9-3.9	0.10-0.25	1.5-2.5

Mechanical Properties

Grade	Tensile Strength ksi(MPa)	Yield Strength ksi (MPa)	Elongation (%)	Hardness HBW	Hardness HRC
S32550	≥110(760)	≥80(550)	≥15	≤297	≤31

Applications

UNS S32550 materials are used in the paper, chemical, nitrogen, and aviation industries as well as in power engineering for screws, shafts, sleeves, fittings, installations and pipelines, pump parts, tanks for chemicals, heat exchangers, radiator parts and aircraft constructions.

Material Summary

Super duplex UNS S32550 is a stainless steel grade that offers excellent corrosion resistance in a wide variety of corrosive chemicals including sulphuric, phosphoric and nitric acids. In Seawater and other chloride containing environments 32550 also provides outstanding resistance to pitting and crevice corrosion, with Critical Pitting Temperature exceeding 50°C.

RESISTANCE TO CORROSION

Excellent ductility and impact strength at both ambient and sub-zero temperatures combine with a high resistance to abrasion, erosion and cavitation erosion.

UNS S32550 Displays superior corrosion resistance in most media. Also, 2550 typically out performs duplex alloy 2205. It performs well in sulphuric, phosphoric, and nitric and shows excellent resistance to organic acids such as acetic and formic acid. Highly reducing media should be avoided.