409 Stainless Steel Plate
409 stainless steel is an economical ferritic heat-resistant stainless steel, whose key feature is the addition of titanium (Ti) for stabilization. It performs excellently in oxidation resistance and high-temperature resistance, and it is low in cost.
Inquiry Now →

Product Introduction

409 Stainless Steel Plate is a titanium-stabilized ferritic stainless steel, engineered primarily for its exceptional value and balance of properties in moderately corrosive, high-temperature environments. Its dominant application is in automotive exhaust systems, where it must withstand a combination of heat, road salts, condensation, and corrosive combustion gases.

As a ferritic steel, it is magnetic and offers advantages like lower thermal expansion and higher thermal conductivity than common austenitic steels. The addition of titanium (Ti) stabilizes the alloy by combining with carbon and nitrogen, preventing chromium depletion and providing good resistance to intergranular corrosion. This, combined with its significantly lower cost (due to the absence of nickel), makes 409 a workhorse material for applications where the superior corrosion resistance of 304 is not strictly required.

Product parameters


tem / ParameterSpecification for 409 (UNS S40900)Notes / Significance
Key FeatureCost-Effective, Titanium-Stabilized Ferritic Steel. Optimized for heat, corrosion, and cost in automotive exhaust and similar applications.The premier economic choice for non-structural exhaust components.
Common DesignationsUNS S40900, AISI 409, EN 1.4512, X6CrTi12, JIS SUH409, GB/T 06Cr11TiThe "Ti" in designations indicates titanium stabilization, a key feature.
Chemical Composition (Typical wt.%)C: ≤ 0.08
Cr: 10.5 - 11.7Ti: ≥ 6*C% (min 0.15%)Mn: ≤ 1.00
Si: ≤ 1.00
Lower Cr than 304 reduces cost. Ti stabilization is critical for weldability and high-temp stability.
Mechanical Properties (Annealed Plate)Tensile Strength (Rm): ≥ 380 - 450 MPaYield Strength (Rp0.2): ≥ 170 - 240 MPaElongation (A): ≥ 20 - 30%Hardness (HB): ≤ 179 - 185Good strength and adequate ductility for forming (e.g., into mufflers, pipes).
Physical PropertiesDensity: 7.75 - 7.80 g/cm³Thermal Conductivity: ~26.0 W/(m·K) (at 100°C)
Maximum Continuous Service Temp: Up to 650 - 700°C (1200°F)
Melting Range: ~1425 - 1510 °C
Lower thermal expansion than austenitic steels reduces thermal stress in exhaust systems.
Key Standards (Plate)ASTM A240/A240M, ASTM A176 (Stainless Steel Plate, Sheet, and Strip), JIS G 4303, EN 10088-2ASTM A240 is the common international procurement standard for general plate.

Surface selection

0f162d0b-14e0-4984-b1ee-93d5d226fd78

Packaging and transportation

Product storage
Product packaging
Product transportation
  • 07a3e9ebd5226dff67db1ced7546a45e
  • e74298b358dba458433d1c5fca8556de
  • 7cf0f7b087df557f3d87356c7ff41a57
  • 9d1230e4f96d347fd470d730e9a5c7da
  • dbe5116e9adaeea4a971c526e41c17d3
  • a64f2b412e20ebf1ab5e387efee53da7
  • 3eb933541131f528d6098c25db22a6c3
  • 5c3036399c17cd5f7a2d925750d3e388
  • cb1eb78caa26614f5926c5e30a90bb9b
  • d8a0dfc79fea23e534cbc5b682f55f87
  • e513556981a9068dff6de09f6acfbaae
  • 9378ecc25f6cdde6614141200b25f493
  • 8bf352734dd6e6dad394ac0dbb80ff1a
  • 74e55ea40f3a78f51c779d39445b07eb
  • 微信图片_20250805172913_195_9
  • b484aba3fb997f99cc4cb6a13b33ee49
  • 0222_clear
  • d538a4ae1c6a142968cd8bafc650ce19

FACTORY SHOW

  • c1146c2bcfc859f4699fe0e085b93a9d1f42462f4bfec-Wgf42E
  • f4c45c2d6c5478927b0cf6620f64a1afe6697ba91d2b17-8li2Fb
  • 2a47e8efdd7cfa3e01584ecc0812764219aa360a39f1c-tSY0Yd

FAQ

Q:What about your price? 
A:Our price is very competitive because we are a factory. Feel free to contact us if you are interested in our products. 

Q:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.

Q:What product information do I need to provide?
A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase. 

Q:Does the product have quality inspection before loading? 
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we
accept the third party inspection absolutely. 

Q:How about the delivery time? 
A:Within 3-15 days after we confirm you requirement. 

Q:What is your terms of payment ?
A:T/T, L/C at sight, Cash, Western Union are all accepted if you have other payment,please contact me. 

Q: Do you provide samples? 
A:Yes,we could offer the sample for you to test but please pay freight fee.

Q:How do we trust your company? 
A:We are a specialized company focusing on global steel trading and supply chain services. Our mission is to provide high-quality, multi-specification, and one-stop steel products and solutions to customers worldwide.

INQUIRY

To learn more about this product, you can submit your requirements here

SUBMIT MESSAGE

RELATED PRODUCTS