• www.ssm-pff.com ,an export and manufacturer for special materials pipes, tubes, fittings, materials including nickel-based alloy, austenitic, ferritic, duplex stainless steel
  • stainless steel seamless pipe,duplex stainless steel seamless tubes, nickel alloy, nickel base alloy seamless tube and pipe,butt-welding fitting, elbow, tee, cross, flange,valve.
  • Shangdun special materials co.,ltd is glable special alloy and stainless steel products company, which is international piping system material manufacturer and upplier, office located in Shanghai. In glable business, we have sucess to entrying North America, Europea, East Asia, Austrialia,Africa market.Our focus on natural gas transportation,offshore unit,chemical refining,nuclear power,shipbuilding,steel structure,machining and so on piping system engineering. 

We have strong resources integration, production and processing base are located in Shanghai and Jiangshu province, The factories in Shanghai and Jiangsu,which have vacuum smelting, non-vacuum smelting, horizontal continuous casting, forging, heat treatment and production lines advanced in the industry, and has international advanced technology and complete inspection means. Produces focus on : nickel base alloy,cobalt base alloy,iron base alloy,austenitic stainless steel,super austenitic stainless steel,duplex and super duplex stainless steel,high alloy material products; type are bars,pipes,tubes,fittings,flanges,which are widely used in metallurgy,cars,thermal power, nuclear power, petro-chemical, aviation and aerospace, rail transportation , paper industry,water industry and so on.

Material and size as follows: Nickel based Alloy : ASTM SB163, SB165, SB444, SB622, SB407, SB535, SB677, SB668, SB729,Inconel 600,601,625,670,690,718,X-750;Inconel 800,800H/HT,825,840,901,926,330,20;Hastelloy C-276
Super stainless steel: 904L,254MO
Duplex/Super Duplex UNS S31803,S32205,S32750,S32760, ASTM A/SA312, A/SA213, A/SA269, EN10216-5
Austenitic Pipe & Tube Standard:GOST9941-81, GOST5632-72 .ASTM/ASME A312/SA312, A269/SA269, ASTM A511, EN10216-5,DIN17458-85,DIN17456-85,JIS G3459,JISG3463,JISG3448,JISG3446,304,304L,316,316L,316Ti,310S,309S,321,321Ti,347

Oil and Gas
Cement and Minerals
Fertilizers and Petrochemicals
Metallurgy and cars industry
Mechanical industry
Wastewater Treatment and other water industry
paper industry,
aviation and aerospace
Transmission and rail transportation
thermal power and other power Generation 
nuclear power
Environmental and Safety

our strong supporting layer and our sales’ professional skills will help customers to supply efficient and timely packaged supporting serivces. We have some stock bars ,pipes, fittings .Our quality is always satisfied by our clients, we are strictly controling the whole production and testing. We will always adhere to the policy of
  • Ni-Mo Alloy:N10675 / B3

    Pipe & tube : seamless pipes and tubes

    Fitting: Buttweld Fittings

    Flanges: Forged

    Bar: Round , Square bar

    Other kinds of forgings products

    Standards: ANSI, DIN, EN, JIS


    Nickel-Molybdenum UNS N10675 (2.46100, NiMo29Cr)

    Chemical Composition:







    Si     max

    S    max



    P       max






















    cb 0.20max






    Material Properties:

    Tensile Strength,Min PSI (MPa)

    Yield Strength (0.2% offset) Min(Mpa)

    Elongation in 2 in. or 50mm or 4D,Min.,%





    Standards :

    Seamless Tubing &/or Pipe

    Welded Tubing

    Welded Pipe

    Buttweld fitting


    Bar Forging and Forging stock










        Hastelloy B3 is nickel-molybdenum alloy which has the same excellent resistance to hydrochloric acid and other strongly reducing chemicals as Hastelloy B2, but with significantly better thermal stability, fabricability and SCC resistance.

    Hastelloy B3 has been primarily used for their resistance to corrosion in nonoxidizing environments such as HCl.But it is is not recommended for use in the presence of ferric or cupric salts because these salts can cause premature failure.

    Hastelloy B3 produced by NiWire is well suited for equipment handling hydrochloric acid in all concentrations and temperatures. Resistant to hydrogen chloride gas and sulfuric, acetic, and phosphoric acids. Principal high-temperature uses are those in which a low coefficient of thermal expansion is required.

         B-3 Alloy is an additional member of the nickel-molybdenum family of alloys with excellent resistance to hydrochloric acid at all concentrations and temperatures. It also withstands sulfuric, acetic, formic and phosphoric acids, and other non-oxidizing media. B-3 alloy has a special chemistry designed to achieve a level of thermal stability greatly superior to that of it predecessors, e.g. B2 alloy. B-3® alloy has excellent resistance to pitting corrosion, to stress-corrosion cracking and to knife-line and heat-affected zone attack. The improved thermal stability of B-3 alloy minimizes the problems associated with fabrication of B2 alloy components. This is due to the reduced tendency to precipitate deleterious intermetallic phases in B-3 alloy, thereby, affording it greater ductility than B2 alloy during and following various thermal cycling conditions. B-3 alloy has good overall forming and welding characteristics. It may be forged or otherwise hot-worked, providing that it is held at 2250°F. (1230°C) for a time sufficient to bring the entire piece to temperature. Since it is a low carbon alloy, the use of lower hot finishing temperatures may be necessary to achieve grain size control. B-3 alloy may also be formed by cold working. Although it does work-harden somewhat rapidly, B-3 alloy components can be made using all common cold forming techniques. Limited tests in boiling 20 percent hydrochloric acid indicate that the uniform corrosion resistance of B-3 alloy is not affected by cold reductions up to 50 percent as compared to that of the alloy in the solution heat-treated condition. B-3 alloy can be welded by all common welding techniques, although oxyacetylene and submerged arc welding processes are recommended when the fabricated item is to be used in corrosive service. Special precautions should be taken to avoid excessive heat input. All wrought forms of B-3 alloy are furnished in the solution heat-treated condition unless otherwise specified. B-3® alloy is solution heat-treated at 1950°F (1065°C) and rapid quenched, except for bright annealed sheet or coil products which are heat-treated at 2100°F (1150°C) and cooled in hydrogen. B-3 alloy is available in form of plate, sheet, strip, billet, bar, wire, pipe and tubing. B-3 alloy is suitable for use in all applications previously requiring the use of B2 alloy. Like B2 alloy, B-3 is not recommended for use in the presence of ferric or cupric salts as these salts may cause rapid corrosion failure. Ferric or cupric salts may develop when hydrochloric acid comes into contact with iron or copper. The single greatest advantage for B-3 alloy over B2 alloy accrues from its ability to maintain excellent ductility during transient exposures to intermediate temperatures. Such exposures are routinely experienced during heat treatments associated with fabrication. While very short exposures at temperatures such as 1290°F (700°C) can severely embrittle B2 alloy at temperature, B-3 alloy exhibits a marked resistance to such embrittlement for up to several hours. This provides far greater facility for the alloy to be fabricated into complex components such as formed heads. ASME has published Code Case 2140 for solution annealed B-3 alloy (UNS N10675). The alloy is also covered by ASTM specifications B-333 (plate, sheet and strip), B-335 (bar), B-366 (welded fittings), B564 (forgings), B619 (welded pipe), B622 (seamless pipe and tube) and B626 (welded tube). B-3 is a registered trademark of Haynes International Inc.




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