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303 Anti-corrosion stainless steel flat steel: chemical equipment, suitable for acid and alkali environments
Stainless steel products

303 Anti-corrosion stainless steel flat steel: chemical equipment, suitable for acid and alkali environments

Excellent acid and alkali resistance, widely used in chemical and marine environments

Standard: ASTM A276

Grade: 303 304 316 321 630 904L

Size: 2x20 to 25x150mm

    303 stainless steel flat bar 

    303 stainless steel flat bar is a solid, rectangular stainless steel bar from the austenitic stainless steel family. Its most notable characteristic is its excellent machinability. By adding sulfur or selenium to 304 stainless steel, 303 stainless steel's machinability is significantly improved, making it highly popular for parts requiring extensive machining.

    Astm A240 201 ss 304 303 316 310s 409 304 316 2b Ba NoAstm A240 201 ss 304 303 316 310s 409 304 316 2b Ba No

    Features

    Excellent Machinability: This is the most prominent feature of 303 stainless steel. The added sulfur forms manganese sulfide inclusions in the steel. These inclusions act as chip breakers during cutting, easily breaking the chips into smaller particles. This significantly reduces tool wear and improves machining efficiency.

    Good Corrosion Resistance: Although some corrosion resistance is sacrificed to improve machinability, 303 stainless steel still possesses excellent corrosion resistance. It resists atmospheric corrosion and many weak acids and bases, but its corrosion resistance is not as strong as that of 304 and 316 stainless steels.

    Easy Machining: Due to its easy-to-cut properties, 303 stainless steel is well-suited for mass production on equipment such as automatic lathes and CNC machines, enabling high-precision machining.

    Non-Magnetic: In its solution state, 303 stainless steel is non-magnetic, but may develop slight magnetism after cold working.

     

    Astm A240 201 ss 304 303 316 310s 409 304 316 2b Ba NoAstm A240 201 ss 304 303 316 310s 409 304 316 2b Ba No

    Typical Applications:

    Due to its easy machinability, 303 stainless steel flat bar is often used to manufacture various components requiring extensive machining:

    Bolts, Nuts, and Shafts: Widely used in the manufacture of various standard and non-standard parts.

    Valve Components and Fittings: Suitable for the manufacture of valves, fittings, and fittings used in various fluid control systems.

    Automation Machinery Parts: Used as precision parts in various automated equipment and instruments.

    Other Components Requiring Machining: Examples include bushings, pins, and various machined parts.

    In short, if you need a flat material that combines the corrosion resistance of stainless steel with exceptional machinability, 303 stainless steel flat bar is an ideal choice.

     

    Specifications of 303 Stainless Steel Flat Bar

    Standard ASTM A276, A484, A479, A580, A582, JIS G4303, JIS G4311,DIN 1654-5,DIN 17440,KS D3706,GB/T 1220
    Material 201,202,205,XM-19 etc.
    301,303,304,304L,304H,309S,310S,314,316,316L,316Ti,317,321,321H,329,330,348 etc.
    409,410,416,420,430,430F,431,440,
    2205,2507,S31803,2209,630,631,15-5PH,17-4PH,17-7PH,904L,F51,F55,253MA etc.
    Surface Pickled,Peeled,Black,Sand Blast,Bright,Mill,Mirror,Hairline etc
    Technology Hot Rolled,Welded,Bend
    Specifications 20*3mm -100*10mm or as required
    Tolerance -0.02

     

    Chemical composition of Stainless Steel Flat Bar

    Austenite Ferrite Stainless Steel 329J1 0Cr26Ni5Mo2 <0.08 23.00-28.00 3.00-6.00 <1.50 <0.035 <0.030 1.00-3.00 <1.00 - 2)
    - 1Cr18Ni11Si4AlTi 0.10-0.18 17.50-19.50 10.–120.. <0.80 <0.035 <0.030 - 3.40-4.00 - Al 0.10-0.30; Ti 0.40-0.70
    - 00Cr18Ni5MoSi2 <0.030 18.00-19.50 4.50-5.50 1.00-2.00 <0.035 <0.030 2.50-3.00 1.30-2.00 - -
    Ferrite Stainless Steel 405 0Cr13Al <0.08 11.50-14.50 3) <1.00 <0.035 <0.030 - <1.00 - Al 0.10-0.30
    410L 00Cr12 <0.030 11.00-13.00 3) <1.00 <0.035 <0.030 - <1.00 - -
    430 1Cr17 <0.12 16.00-18.00 3) <1.25 <0.035 <0.030 - <0.75 - -
    430F Y1Cr17 <0.12 16.00-18.00 3) <1.00 <0.035 <0.15 1) <1.00 - -
    434 1Cr17Mo <0.12 16.00-18.00 3) <1.00 <0.035 <0.030 0.75-1.25 <1.00 - -
    447J1 00Cr30Mo2 <0.010 28.50-32.00 - <0.40 <0.035 <0.030 1.50-2.50 <0.40 <0.015 -
    XM27 00Cr27Mo <0.010 25.00-27.50 - <0.40 <0.035 <0.030 0.75-1.50 <0.40 <0.015 -

     

    Martensite stainless steel 403 1Cr12 <0.15 11.50-13.00 3) <1.00 <0.035 <0.030 - <0.50 - -
    410 1Cr13 <0.15 11.50-13.50 3) <1.00 <0.035 <0.030 - <1.00 - -
    405 0Cr13 <0.08 11.50-13.50 3) <1.00 <0.035 <0.030 - <1.00 - -
    416 Y1Cr13 <0.15 12.00-14.00 3) <1.25 <0.035 <0.15 1) <1.00 - -
    410J1 1Cr13Mo <0.08-0.18 11.50-14.00 3) <1.00 <0.035 <0.030 0.30-0.60 <0.60 - -
    420J1 2Cr13 0.16-0.25 12.00-14.00 3) <1.00 <0.035 <0.030 - <1.00 - -
    420J2 3Cr13 0.26-0.35 12.00-14.00 3) <1.00 <0.035 <0.030 - <1.00 - -
    420F Y3Cr13 0.26-0.40 12.00-14.00 3) <1.25 <0.035 <0.15 1) <1.00 - -
    - 3Cr13Mo 0.28-0.35 12.00-14.00 3) <1.00 <0.035 <0.030 0.50-1.00 <0.80 - -
    - 4Cr13 0.36-0.45 12.00-14.00 - - - - - - - -

     

    flat-steel-splicing-diagram-1

     

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