Super Duplex 2507-Zhishang Steel

Chemical Composition

Cr	Ni	Mo	C	N	Mn	Si	Cu	P	S	Fe
24.0-26.0	6.0-8.0	3.0-5.0	0.030 Max	.24-.32	1.20 Max	0.80 Max	0.50 Max	0.035 Max	0.020 Max	Balance

ASTM Specifications

Pipe Smls	Pipe Welded	Tube Smls	Tube Welded	Sheet/Plate	Bar	Flanges & Fittings
A790	A790	A789	A789	A240	A276	A182

Mechanical Properties

Specified Tensile Properties, Plate ASTM A240

Ultimate Tensile Strength, ksi	Minimum .2% Yield Strength, ksi Minimum	% Elongation Min.	Hardness (HRB) Max.
116	80	15	310

Description

· UNS S32750, F53

· ASTM A 240, A790, A815, A182, A 276, A 476, A789

· EN 1.4410

Other common names SAF 2507®

Forms of Super Duplex 2507 Available at Mega Mex

· Sheet

· Plate

· Bar

· Pipe & Tube (welded & seamless)

· Fittings

· Elbows, tees, stub-ends, returns, caps, crosses, reducers, pipe nipples, etc.

· Weld Wire AWS ER2594, E2594-16, E2553T-1

Duplex 2507 Overview

Duplex 2507 is a super duplex stainless steel designed for applications which demand exceptional strength and corrosion resistance. Alloy 2507 has 25% chromium, 4% molybdenum, and 7% nickel. This high molybdenum, chromium and nitrogen content results in excellent resistance to chloride pitting and crevice corrosion attack and the duplex structure provides 2507 with exceptional resistance to chloride stress corrosion cracking.

Usage of Duplex 2507 should be limited to applications below 600° F (316° C). Extended elevated temperature exposure can reduce both the toughness and corrosion resistance of alloy 2507.

Duplex 2507 possesses excellent mechanical properties. Often a light gauge of 2507 material can be used to achieve the same design strength of a thicker nickel alloy. The resulting savings in weight can dramatically reduce the overall cost of fabrication.

Corrosion Resistance

2507 Duplex is highly resistant to uniform corrosion by organic acids such as formic and acetic acid. It is alsohighly resistant to inorganic acids, especially if they contain chlorides. Alloy 2507 is highly resistant to carbide-related intergranular corrosion. Due to the ferritic portion of the duplex structure of the alloy it is very resistant to stress corrosion cracking in warm chloride containing environments. Through additions of chromium, molybdenum and nitrogen localized corrosion such as pitting and crevice attack are improved. Alloy 2507 has excellent localized pitting resistance.

What are the characteristics of Duplex 2507?

· High resistance to chloride stress corrosion cracking

· High Strength

· Superior resistance to chloride pitting and crevice corrosion

· Good general corrosion resistance

· Suggested for applications up to 600° F

· Low rate of thermal expansion

· Combination of properties given by austenitic and ferritic structure

· Good weldability and workability

In what applications is Duplex 2507 used?

· Desalination Equipment

· Chemical process pressure vessels, piping and heat exchangers

· Marine Applications

· Flue Gas Scrubbing Equipment

· Pulp & Paper Mill Equipment

· Offshore Oil production/technology

· Oil and gas industry equipment

About Us

The company mainly deals in color-coated, galvanized, stainless steel pipes, stainless steel coils, stainless steel plates of various materials; hot-rolled series of rebar, medium and heavy plates, coils, I-beams, angle steels, channel steels, H-beams and other steel products and deep processing Service. (The company’s annual inventory is more than 50,000 tons).The company adheres to the concept of “integrity first, service-oriented”, relying on the strong strength of major domestic steel groups, exerting the company’s strong resource integration capabilities, and serving and satisfying the needs of customers both in China and at abroad.Additionally, Zhishang Steel also has a powerful and professional logistics distribution system, which can provide customers with efficient, fast and flexible logistics services at any time.Our business covers Southeast Asia, the Middle East, Africa, Australia, Europe, the United States and other countries.Looking forward to the future, in order to maintain in-depth and stable cooperation with customers both at home and abroad, all employees of Zhishang Steel will work harder to provide Better products and services to create more added value for customers.