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ASTM A268 TP409 , UNS S40900 , EN 1.4512 welded stainless steel tube for Exhaust

Categories Stainless Steel Tube
Brand Name: Daway
Model Number: TP409, UNS S40900, EN 1.4512
Place of Origin: China
material: TP409, UNS S40900, EN 1.4512, DIN X2CrTi12 stainless steel
Certification: SGS
MOQ: 1 ton
Price: negotiable
Payment Terms: L/C, T/T
Supply Ability: 200 tons per month
Delivery Time: 15 days after receipt 30% of value
Packaging Details: seaworthy
product name: ASTM A268 TP409 , UNS S40900 , EN 1.4512 welded stainless steel tube
standard: ASTM A268/A268M
dimension: OD 6 ~219 X WT 0.5~25.4mm
delivery state: annealed
surface: bright
length: cut lengths on request
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    ASTM A268 TP409 , UNS S40900 , EN 1.4512 welded stainless steel tube for Exhaust

    ASTM A268 TP409 , UNS S40900 , EN 1.4512 welded stainless steel tube


    409 is a low cost ferritic stainless steel. Its dominant use is in vehicle exhaust systems,

    so much so that it is often referred to as “muffler” grade.


    This TP409 stainless grade combines the following characteristics:

    • Basic corrosion and oxidation resistance
    • Composition balanced for optimum formability
    • Weldable only in thin sections due to fully ferritic structure
    • Low cost and limited cost variation due to low alloy content


    Automotive exhaust systems have to withstand aggressive conditions from high temperatures

    at the manifold end, sulphuric acid condensate and de-icing salt. Given the severity of these conditions,

    it can seem surprising that the 11% Cr 409 grade has met the challenge for many years.

    Exhaust components are also required to be bent, expanded and pressed into all sorts of convoluted shapes.

    The ability of a ferritic steel to meet these formability requirements is little short of amazing.


    Applications include:
    Heat exchangers, gas boilers, fuel filters.


    Chemical composition ( weight % )

    GradeCSiMnPSCrNiTi
    TP409, UNS S409000.08 max1.00 max1.00 max0.045 max0.030 max10.5~11.70.5 max6*C min, 0.75 max

    Mechanical properities

    Tensile strengthYield strengthElongation
    38017020

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