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Super Duplex 2507 Fastener
    发布时间: 2015-12-15 10:06    

Super Duplex 2507 Fastener

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.
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.


Chemical Composition


Nickel ...............................................................................6.0-8.0
Chromium........................................................................24.0-26.0
Molybdenum.................................................................... 3.0-5.0
Manganese......................................................................1.2max.
Sulfur.................................................................................0.02max.
Silicon...............................................................................0.8max.
Copper..............................................................................0.50max.
Carbon..............................................................................0.03max.
Nitrogen............................................................................0.24-0.32
Phosphorus.....................................................................0.035max.
Iron.....................................................................................Balance


·Mark: TM
·Material: Super Duplex 2507(UNS S312750)
·Finish: Polishing
·Certificate: ISO9001:2008, SGS
·Packaging Detail: 20-25kgs per carton, 36-48 cartons per pallet or according to  customer's  requirement.
·Customer Service: 24-hours standby, Critical listening your every suggestion and feedback ASAP.

TOMORROW manufacturing capabilities allow us to make a wide variety of exotic alloy fasteners such as Hex Bolt, Hex Nut, Allen Bolt, Plain Washer, Thread Stud etc.
Our special materials are Hastelloy C-276(UNS N10276), Hastelloy C-22(UNS N06022), Hastelloy B3(UNS N010675), Incoloy 825(UNS N08825), Incoloy 925(UNS N09925), Incoloy 926(UNS N08926), Incoloy 800HT(UNS N08811), Inconel 600(UNS N06600), Inconel 625(UNS N06625), Inconel X-750(UNS N07750), Inconel 725(UNS N07725), Inconel 718(UNS N07718), Monel 400(UNS N04400), Monel404, Monel K500(UNS N05500), Duplex 2205(UNS S31803), Super Duplex 2507(UNS32750), Super Austentic 904L(UNS N08904), Super Austentic F44(UNS S31254), Titanium, Nimonic 80A, GH113, GH3039, GH2032, Precipitation-hardening 17-4PH, Super Austentic 20Cb-3, Super Austentic 6XN, Austentic 347H(UNS S34709) etc. Our hot forged fastener size range is from M5-M100.

Our goal today, as always, is to develop innovative high quality exotic alloy fasteners that are durable, save time and money. 

Customer service is just as important to us as quality. 
Our representatives will assist you in analyzing your requirements and selecting the system best suited to your needs. We inventory an extensive line of standard products and will economically produce special systems to meet your design requirements. We are people who deliver what we say, when we say. 


TOMORROW...Dependability in design, engineering, manufacturing and service.


Welcome to contact us anytime you feel suitable.



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86-523-83788163