Ss 409 Plate Price
SS 409 plate is a practical ferritic stainless steel material known for its heat resistance, oxidation resistance, and cost-effective performance. Its titanium-stabilized composition makes it suitable for exhaust systems, industrial heating equipment, and structural fabrication. For applications requiring stronger corrosion resistance, 304 or 316 stainless steel may be preferred, while 409 remains a reliable option for high-temperature industrial use.
- Description
SS 409 plate is a ferritic stainless steel plate widely used in applications requiring good oxidation resistance, heat resistance, and cost-effective corrosion protection. Although the keyword includes “price,” the value of SS 409 plate is mainly influenced by its material composition, thickness, surface finish, and processing requirements. Compared with 304 stainless steel, 409 offers lower chromium content but better economy for structural and high-temperature applications.
What Is SS 409 Plate?
SS 409 plate is a chromium-based ferritic stainless steel that contains low nickel and added titanium for improved stabilization. It is commonly used in environments where moderate corrosion resistance and high-temperature durability are required. Because of its balanced alloy design, 409 stainless steel is frequently chosen for automotive exhaust systems, industrial heat equipment, and structural applications.
This grade is magnetic and cannot be hardened by heat treatment, but it provides excellent weldability and good resistance to oxidation.
Chemical Composition of SS 409 Plate
The alloy composition of SS 409 plate gives it good thermal stability and resistance to atmospheric corrosion.
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Chromium (Cr) | 10.5 – 11.75 |
| Nickel (Ni) | ≤ 0.50 |
| Manganese (Mn) | ≤ 1.00 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.03 |
| Titanium (Ti) | 6×C min |
| Iron (Fe) | Balance |
The addition of titanium improves weldability and helps prevent intergranular corrosion during high-temperature service.
Mechanical Properties of SS 409 Plate
SS 409 plate provides moderate strength and good formability for industrial fabrication.
| Property | Typical Value |
|---|---|
| Tensile Strength | ≥ 380 MPa |
| Yield Strength | ≥ 170 MPa |
| Elongation | ≥ 20% |
| Hardness | ≤ 88 HRB |
| Density | 7.7 g/cm³ |
| Melting Range | 1450 – 1510°C |
Its ferritic structure makes it suitable for forming, bending, and welding in sheet and plate applications.
Main Performance Characteristics
Heat Resistance
SS 409 plate offers good oxidation resistance at elevated temperatures and is commonly used in continuous service up to approximately 675°C.
Corrosion Resistance
The material provides adequate resistance to atmospheric corrosion, exhaust gases, and mild industrial environments. It performs better than carbon steel but lower than 304 stainless steel in humid or chloride-rich conditions.
Weldability
Because of titanium stabilization, SS 409 plate has good weldability and is often processed by laser cutting, welding, and forming.
Cost Efficiency
Due to its low nickel content, SS 409 is considered a more economical stainless steel grade for applications that do not require premium corrosion resistance.
Common Applications of SS 409 Plate
SS 409 stainless steel plate is widely used in industries requiring heat resistance and moderate corrosion protection.
- Automotive exhaust systems
- Mufflers and catalytic converter shells
- Heat exchangers
- Boiler components
- Agricultural equipment
- Railway containers
- Structural supports
- Industrial furnace parts
- Transportation equipment
- Welded tubing and fabricated sheet parts
The material is especially common in applications exposed to high temperatures and intermittent moisture.
SS 409 Plate vs 304 Stainless Steel
| Feature | SS 409 Plate | 304 Stainless Steel |
|---|---|---|
| Structure | Ferritic | Austenitic |
| Magnetic | Yes | No |
| Nickel Content | Low | Higher |
| Corrosion Resistance | Moderate | High |
| Heat Resistance | Good | Good |
| Typical Use | Exhaust systems | Food and chemical equipment |
SS 409 is preferred for heat-related structural applications, while 304 is chosen for environments requiring better corrosion resistance and hygiene.
Typical Plate Specifications
Common available dimensions for SS 409 stainless steel plate include:
| Thickness | Width | Length |
|---|---|---|
| 1.5 mm – 20 mm | 1000 mm – 2000 mm | 2000 mm – 6000 mm |
Cut-to-size processing, surface polishing, and custom fabrication are commonly used for industrial projects.
