409 Stainless Steel Sheet/Plate

1. Thickness:0.1mm - 80mm
Width:800mm - 2,000mm
Length:300mm - 12,000mm

2. Surface:2B/HL/NO.4/8K
perforated,colored,checkered

3. Grades: Type 409 Stainless Steel

4. PVC film: Novacel(laser cutting)
Nitto(deep drawing)

5. Standard: ASTM/ASME UNS S40900

  • Alloy 409 Stainless Steel is a general purpose, chromium, titanium stabilized, ferritic stainless steel whose primary application is automotive exhaust systems. It contains 11% chromium which is the minimum amount for the formation of the passive surface film which gives stainless steels their corrosion resistance. It combines good elevated temperature corrosion resistance with medium strength, good formability, and overall cost. Alloy 409 resists corrosion strongly compared to carbon steel and is used as an alternative to carbon steel in mildly challenging environments where its high resistance to corrosion and high temperature oxidation gives an advantage. It is commonly used in applications where appearance is a secondary quality to mechanical properties and corrosion resistance.


    STANDARD CHEMICAL COMPOSITION

    Type C Mn Si P S Cr Ni Ti
    409 max:0.08 max:1.0 max:1.0 max:0.045 max:0.045 min:10.5
    max:11.75
    max:0.5 min:0.48
    max:0.75

     

    NOMINAL MECHANICAL PROPERTIES

    Grade Tensile Strength ksi (MPa) min Yield Strength 0.2% ksi offset ksi (MPa) min Elongation % Hardness (Brinell) MAX Hardness (Rockwell B) MAX
    409 380 207 20 207 95


    NOMINAL PHYSICAL PROPERTIES

    Density lbm/in3 Thermal Conductivity BTU/hr-ft-°F Electrical Resistivity (in x 10-6) Modulus of Elasticity (psi x 106) Coefficient of Thermal Expansion (in/in)/°Fx106 Specific Heat (BTU/lb/°F) Melting Range (°F)
    at 68°F 9.4 at 212°F 28.3 at 68°F 29 5.84 at 32-212°F 0.114 at 68°F to 212°F 2500 to 2590
    0.280 12.4 at 932°F 39.4 at 752°F 6.60 at 32-1000°F
    49.6 at 1652°F 6.86 at 32-1500°F

     

    APPLICATIONS OF 409 STAINLESS STEEL SHEET/PLATE

    • Automotive and truck exhaust systems
    • Catalytic converters
    • Mufflers
    • Tailpipes
    • Farm equipment
    • Structural support and hangers
    • Transformer cases
    • Furnace components
    • Heat exchanger tubing
  • ADDITIONAL PROPERTIES OF 409 STAINLESS STEEL SHEET/PLATE

    • ANNEALING
      Annealing is achieved by heating to between 700ºC and 750ºC for 90 minutes per 25mm thickness followed by an air quench.
    • STRESS RELIEVING
      Stress relieving after welding is not normally required. Should this be necessary, temperatures between 200ºC and 300ºC are recommended.
    • HOT WORKING
      Uniform heating of the steel in the range of 950ºC to 1050ºC is required. The finishing temperature should be below 750ºC. Extended holding times above 1000ºC should be avoided as excessive grain growth may occur and ductility may be detrimentally affected. All hot-working operations should be followed by annealing, pickling and passivating to restore the mechanical properties and corrosion resistance.
    • COLD WORKING
      Alloy 409 stainless steel has good formability characteristics with useful mechanical properties. Its good ductility allows it to be readily formed by bending and deep drawing. Alloy 409 stainless steel does not undergo significant work hardening when cold formed.
    • CORROSION RESISTANCE
      While being significantly more corrosion resistance than mild or low-alloy corrosion-resistance steels, alloy stainless steel has a lower corrosion resistance than the higher-chromium type alloy 430.

     

  • SURFACE FINISH OF 409 STAINLESS STEEL SHEET/PLATE

    *Not all finishes are available in all alloys - (contact Yieh United Sales for more information)

    #1 Finish Hot rolled, annealed and pickled.
    #2D Finish A uniform, dull silver gray mill finish that is applied to thinner stainless steel coils,the thickness of which has been reduced by cold rolling.
    #2B Finish A semi polished surface achieved by finishing with the equivalent of a 80 to 120 grit abrasive. This finish has a pronounced grit line.
    #3 Finish A semi polished surface achieved by finishing with the equivalent of a 80 to 120 grit abrasive. This finish has a pronounced grit line.
    #4 Finish Also called brushed, directional or satin finish. A is characterized by fine polishing grit lines that are uniform and directional in appearance. The final abrasive used in the process is 150 to 220 grit.
    #4 Satin Brush Finish 150 to 180 grit finish A fine directional polish, typically used in the washroom accessories industry. Most 3.5″ floppy diskette cover plates have this finish.
    #6 Finish Polished finish achieved with the equivalent of a 240 grit abrasive. Finer grit lines and higher reflectivity than a No. 4 finish.
    #7 Finish Highly reflective surface obtained with the equivalent of a 320 grit abrasive. Minimal grit lines.
    No. 8 or True #8 mirror This is the most reflective mirror finish on the market. All of the polishing, or “grit,” lines from the preliminary polishing operations are removed. The look is that of a glass mirror. Sometimes referred to as a non directional mirror finish, Super 8, No. 9, Perfect No. 10, and even No. 12 mirror.
    CMP Super #8 mirror Chemical Mechanical Polished Super #8 mirror finished sheets are guaranteed to be free from any manufacturing defects. This product represents the ultimate in mirror polished stainless steel. It is available as a single-sided or double-sided mirror polished sheet.
    Hairline finish 80 – 140 grit finish A well defined directional polish. Starting base substrate is a No. 4 finish sheet; these sheets are polished to provide a “continuous long grain” hairline look. A finish which is popular with architects for its aesthetic, it is equally popular with fabricators due to it’s ease of fabrication and finish matching properties after welding operations.
  • INNOVATIVE TECHNOLOGY of 409 STAINLESS STEEL SHEET/PLATE

    At Yieh United Corporation, we never stop improving and developing our technologies to go beyond our customer’s expectations. We strive towards these goals to produce reliable products and ensure they can be fully utilized throughout their lifetime.

    stainless-steel-innovative-technology

  • PACKING FOR 409 STAINLESS STEEL SHEET/PLATE

    Our 409 stainless steel products are packed and labeled according to the regulations and customers’ requests.

    stainless-steel-sheet-standardpackageNote: This is Yieh United Corporation’s standard seaworthy packing for 409 stainless steel sheet sheet/plate.

    stainless-steel-sheet-special-packageNote: This is Yieh United Corporation’s special packing for 409 stainless steel sheet/plate (Extra fee is needed).

  • FAQ

    1. What is the minimum order quantity (MOQ)?
    - Normally, the MOQ for our stainless steel sheet is 200 Kg. If we have any excess inventory of stainless steel sheet, there’s no MOQ requirement. You can ask us to check when you are interested in purchasing them.

    2.What is the payment method?
    
- For new customers: 30%T/T deposit 70%T/T Before shipment.
– For partners and distributors, 30%T/T deposit 70% T/T Against B/L Copy.

    3.What is the acceptable currency?
    - We accept USD, EUR and RMB.

    4.What is the delivery time?
    
- 5 days in advance.

    5.Where is the loading port?
    - Normally, our loading ports are Shanghai, Tianjin, and Shenzhen. You can choose anyone of them, or you can select the other ports.

    6.What is the delivery term?
    - FOB, CIF, CFR, EXW

    7.Do you offer free samples?
    
- Yes, based on our stock status, we will send our customer free samples. The express fee is to be paid by our customers.

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