Stainless Steel 409 is a universally useful, chromium, titanium settled, ferritin stainless steel whose essential application is car fumes frameworks. It contains 11% chromium which is the base sum for the development of the latent surface film which gives stainless steels their consumption resistance. It joins great lifted temperature erosion resistance with medium quality, great formability, and general expense. Compound 409 opposes erosion unequivocally contrasted with carbon steel and is utilized as a distinct option for carbon steel in gently difficult situations where its high imperviousness to consumption and high temperature oxidation gives favourable element. It is normally utilized as a part of uses where appearance is an auxiliary quality to mechanical properties and erosion resistance.
STANDARDS OF STAINLESS STEEL 409:
- ASTM/ASME: UNS S40900
- EURONORM: FeMi35Cr20Cu4Mo2
- DIN: 2.4660
APPLICATIONS OF STAINLESS STEEL 409:
In spite of the fact that Stainless Steel 409 is composed chiefly for the auto fumes industry, it has been effectively utilized as a part of other mechanical applications also. A few illustrations of utilizations that call for 409 Stainless Steel include:
- Car fumes frameworks
- Exhaust systems
- Suppressors
- Tailpipes
- Ranch gear
- Basic backing and clothes rods
- Transformer cases
- Heater parts
- Heat exchange tubing
TYPES OF STAINLESS STEEL 409:
- ASTM A312 TP 409 Stainless Steel Seamless Pipes
- SS 409 Welded Pipes
- ASTM A213 TP 409 Stainless Steel Seamless Tubes
- SS 409 Rectangular Pipes
- ASTM A312 TP 409 Stainless Steel Welded Pipes
- SS 409 Seamless Tubes
- ASTM A249 TP 409 Stainless Steel Welded Tubes
- SS 409 ERW Tubes
- SS 409 Seamless Pipes
- SS 409 EFW Tubes
- SS 409 ERW Pipes
- SS 409 Welded Tubes
- SS 409 EFW Pipes
- SS 409 Rectangular Tubes
- Stainless Steel 409 Round Bar
- Stainless Steel 409 plates
- Stainless Steel 409 sheets
- Stainless Steel 409 coil
- Stainless Steel 409 fitting
- Stainless Steel 409 flanges
- Stainless Steel 409 fasteners
CHEMICAL COMPOSITION OF STAINLESS STEEL 409:
| 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 |
MECHANICAL PROPERTIES OF STAINLESS STEEL 409:
| 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 |
PHYSICAL PROPERTIES OF STAINLESS STEEL 409:
| 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 |