News
Credibility ,Yaang Stainless inventory includes Alloy 409 (UNS S40900) in Stainless Steel Pipes. Other product forms such as Stainless Steel Flanges, Stainless Steel Pipe Fittings.
Overview
Alloy 409 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.
Although Alloy 409 is designed principally for the automotive exhaust industry, it has been successfully used in other industrial applications as well. Some examples of applications that call for Alloy 409 include:
Resistance
Processing
Properties
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 |
Grade | Tensile Strength MPa (min) | Yield Strength 0.2% MPa(min) | Elongation % | Hardness (Brinell) MAX | Hardness (Rockwell B) MAX |
---|---|---|---|---|---|
409 | 380 | 207 | 20 | 207 | 95 |
Density lbm/in3 |
Thermal Conductivity (BTU/h ft. °F) |
Electrical Resistivity (in x 10-6) |
Modulus of Elasticity (psi x 106 |
Coefficient of Thermal Expansion (in/in)/ °F x 10-6 |
Specific Heat (BTU/lb/ °F) |
Melting Range (°F) |
---|---|---|---|---|---|---|
at 68°F: 0.280 | 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 |
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 |
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Yaang Pipe Industry Co., Ltd. is an international supplier of piping solutions for flange, butt welding fittings, socket welding fittings and threaded fittings. Our products are widely used in different industrial fields, including oil and gas, chemical industry, petrochemical industry, power plant, pulp and paper industry, environmental and water conservancy engineering, engineering projects, etc.