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            WELCOME TO HAOHUA
            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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