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    High Alloy Materials

    STAINLESS STEEL PRODUCTS

     

     

    Stainless steel is a corrosion resistant steel alloy with a minimum of 10% chromium. There are different grades and surface finishes of stainless steel produced to accommodate the environment in which the material will be implemented. Unlike carbon steel, stainless steel does not rust when exposed to air and moisture due to the sufficient amount of chromium present. The chromium creates an invisible passive film of chromium oxide that will not let oxygen attack the surface and prevents rusting of the iron base.

    Haohua Industry is a stainless steel distributor of more than 20 grades of Stainless Steel. 

     

     

    Popular Stainless Steel Grades Available at haohua Industry


    Grade

    UNS Specification

    Available Forms

    Duplex 2205

    S31803, S32205

    Plate, Sheet, Bar, Pipe & Tube (welded & seamless), Fittings, Welding Material

    LDX 2101

    S32101

    Plate, Sheet, Bar, Welding Products

    Super Duplex 2507

    S32750

    Plate, Sheet, Bar, Pipe & Tube (welded & seamless), Fittings

    Zeron 100

    S32760

    Plate, Bar, Pipe, Fittings, Welding Material

    Duplex 2304

    S32304

    Plate

    AL-6XN

    N08367

    Plate, Sheet, Bar, Pipe & Tube (welded & seamless), Fittings, Welding Material

    904/L

    N08904

    Pipe

    254 SMO

    S31254

    Bar, Pipe, Flanges and Fittings

    253 MA®

    S30815

    Plate, Sheet, Bar, Pipe, Welding Material

    321

    S32100

    Plate, Sheet, Bar, Pipe & Tube (welded & seamless), Fittings, Welding Products

    409

    S40900

    Plate and Sheet

    330

    N08330

    Plate, Sheet, Bar, Pipe (welded & seamless), Welding Products

    347

    S34700

    Plate, Sheet, Bar, Pipe & Tube (welded & seamless), Fittings, Welding Products

    309/S

    S30900/S30908

    Plate, Sheet, Bar, Pipe & Tube (welded & seamless), Welding Products

    310/S

    S31000/S31008

    Plate, Sheet, Bar, Pipe & Tube (welded & seamless), Fittings, Welding Products

    317/L

    S31700/S31703

    Plate, Sheet, Bar, Pipe & Tube (welded & seamless), Fittings, Welding Products

    304, 304/L

    S30400, S30403

    Plate, Sheet, Bar, Pipe & Tube (welded & seamless), Fittings, Welding Products

    304H

    S30409

    Plate, Bar, Pipe and Fittings

    316/L

    S31600, S31603

    Plate, Sheet, Bar, Pipe & Tube (welded & seamless), Fittings, Welding Products

    316H

    S31609

    Plate, Pipe and Fittings

    333

    N06333

    Plate, Sheet & Welding Products

    410/S

    S41000, S41008

    Plate, Sheet, Bar, Pipe

    430

    S43000

    Sheet

    15-5PH

    S15500

    Plate & Bar

    17-4PH

    S17400

    Bar, Plate & Sheet

    17-7PH

    S17700

    Bar

    Alloy 20

    N08020

    Plate, Sheet, Bar, Pipe & Tube (welded & seamless), Fittings, Welding Products

    *Fittings include flanges, slip-ons, blinds, weld-necks, lapjoints, long welding necks, socket welds, elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples.

     

    Stainless steels can generally be categorized into 7 categories:

     

    Stainless Steel Pipe and TubingFerritic Stainless Steels

    Chromium is their major alloying element
    Ductility and formability less than austenitic grades
    Magnetic
    Highly corrosion resistant, less durable than austenitic
    Cannot be hardened by heat treatment
    Contain between 10.5%-27% chromium and very little nickel
    Common grades: part of the 400 series like 409, 410S, 430

     

    Austenitic Stainless Steels

    Comprise of 70% of total stainless steel production
    Hardenable by cold working
    Usually non-magnetic
    High hardness and yield strength
    Contain a maximum of 0.015% carbon, minimum of 16% chromium and sufficient nickel and/or manganese
    Superaustenitic stainless steels (AL-6XN and 254 SMO)  have great resistance to chloride pitting and crevice corrosion
    Common grades: 300 series like 304, 316, 320, 321, 347,309
     

    Stainless Steel SheetMartensitic Stainless Steels

    Highly machinable
    Very strong and tough
    Can be hardened by heat treatment
    Magnetic
    Contains chromium (12-14%), molybdenum (0.2-1%), nickel, (0 - < 2%), carbon (0.1 - < 1%)
    Common grades: 410, 420, 440
     

    Duplex Stainless Steels

    Often divided into 3 sub classes
    Lean Duplex
    Standard Duplex
    SuperDuplex
    Mixed microstructure of austenite and ferrite about a 50/50 mix
    Higher strength and better stress corrosion cracking resistance than most austenitic alloys
    Greater toughness than ferritic alloys, especially at low temperatures
    Good resistance to localized corrosion, particularly pitting, crevice corrosion and stress corrosion cracking
    Common grades: 2205 and 2507

     

    Precipitation-Hardening Martensitic Stainless Steels       

    Designed to be formable in the solution annealed condition
    Can be hardened by heat treatment
    Contain chromium and nickel as major alloying elements
    Corrosion resistance is usually better than that of straight chromium ferritics
    Most common grade is 17-4PH Stainless Steep Coil

       

     

     

     

     

     

    Superaustenitic Stainless Steels

    Same structure as austenitic alloys
    Enhanced levels of elements like chromium, nickel, molybdenum, copper and nitrogen
    Superior strength and corrosion resistance
    Common Grades: AL-6XN and 254 SMO
     

    Stainless Steel BarsSuperferritic

    Structure and properties similar to ferritic alloys
    Enhanced levels of chromium and molybdenum
    Increased resistance to high temperatures and corrosive environments like seawater
     

    Friendly link: Stainless coils tubing | Titanium Alloy steel pipes | U tubes | Finned tubes | Ferritic Stainless Steel Pipes | Duplex Stainless steel pipes | Austenitic stainless steel pipes | Nickel Alloy steel pipes |
    JIANGSU HAOHUA INDUSTRY GROUP
    Tel: 0086-512-58220050 Fax:0086-512-58810865 E-mail: sales@haopipe.com
    Add: No.17,Southeastern Avenue, Economic Development Zone (South Area),Zhangjiagang City, Jiangsu Province, China.
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