Stainless Steel Sheets Supplier | Manufacturer
Thickness: 0.03 mm to 45 mm, or as customers’ demands.
Sizes: 2500 X 1250 X 0.4MM, 3000 X 1500 X 2.5MM, etc. Or as your requirement.
Finish: No.1, 2B, No.4, BA, Embossed, Etch, etc.
Standard: AISI 430/430L,
| ASTM A240, UNS S43000 | ASTM A240, UNS S43003 |
430 Stainless Steel of Specification and Size
430 and 430L stainless steel sheets are ferritic stainless steels known for their excellent corrosion resistance, good formability, and affordability. These grades are widely used in various industries due to their unique properties, which make them suitable for a range of applications, from household appliances to automotive components.
Key Characteristics:
✔ 16-18% Chromium for corrosion resistance
✔ Magnetic (ferritic structure)
✔ Good oxidation resistance (up to 815°C)
✔ Lower cost than nickel-containing grades
✔ 430L variant reduces carbide precipitation in welding
430L Stainless Steel of Specification
| Parameter | 430 | 430L |
|---|---|---|
| Standard | ASTM A240, UNS S43000 | ASTM A240, UNS S43003 |
| Thickness Range | 0.3mm – 6.0mm (cold rolled) | 0.3mm – 6.0mm |
| Width Range | 600mm – 1500mm | 600mm – 1500mm |
| Surface Finish | 2B, BA, No.4, HL | 2B, BA, No.4 |
| Key Difference | Standard carbon (≤0.12%) | Low carbon (≤0.03%) |
- Grade: 430 and 430L
- Type: Ferritic stainless steel
- Finish: Available in various finishes such as 2B, BA, No. 4, and HL
- Thickness Range: Typically 0.3mm – 3.0mm
- Width Range: Usually 1000mm – 1500mm
- Length Range: Customizable as per requirements
Chemical Composition of 430 Stainless Steel
| Element | 430 | 430L |
|---|---|---|
| Cr | 16.0-18.0 | 16.0-18.0 |
| C | ≤0.12 | ≤0.03 |
| Mn | ≤1.00 | ≤1.00 |
| Si | ≤1.00 | ≤1.00 |
| P | ≤0.040 | ≤0.040 |
| S | ≤0.030 | ≤0.030 |
| Fe | Balance | Balance |
Critical Notes:
430L’s low carbon prevents sensitization in welding
No nickel makes it cost-effective
Physical Properties of 430 Stainless Steel
| Property | 430 | 304 |
|---|---|---|
| Density (g/cm³) | 7.70 | 8.00 |
| Melting Point (°C) | 1425-1510 | 1400-1450 |
| Thermal Conductivity (W/m·K) | 26.0 | 16.2 |
| Electrical Resistivity (μΩ·m) | 0.60 | 0.73 |
| Magnetic | Yes | No |
Performance Comparison:
| Property | 430 | 304 | Carbon Steel |
|---|---|---|---|
| Corrosion Resistance | Moderate | Excellent | Poor |
| Cost (USD/kg) | $2.5-4.0 | $4.0-6.0 | $0.8-1.5 |
Mechanical Properties of 430 Stainless Steel
| Property | 430 | 430L |
|---|---|---|
| Tensile (MPa) | 450-600 | 420-550 |
| Yield (MPa) | 275-350 | 250-320 |
| Elongation (%) | 20-25 | 22-28 |
| Hardness (HV) | 150-180 | 140-170 |
Effect of Cold Working:
Cold rolling increases strength by 30-40%
Annealing at 780-850°C restores ductility
Benefits of Using 430L Stainless Steel Sheet
- Cost – Effectiveness
Compared to austenitic stainless steels such as 304 and 316, 430/430L stainless steel is more affordable. This cost advantage makes it an attractive option for applications where high – end corrosion resistance is not the primary requirement.
- Corrosion Resistance
430/430L stainless steel offers good resistance to mild corrosion, making it suitable for use in environments with moderate exposure to moisture, acids, and alkalis. It is commonly used in kitchen appliances, automotive trim, and architectural applications.
- Formability
The good formability of 430/430L stainless steel allows for easy fabrication into various shapes and sizes. It can be bent, stretched, and stamped without cracking, making it ideal for complex – shaped components.
- Weldability
430L stainless steel, with its low carbon content, has excellent weldability. It can be welded using conventional welding methods such as TIG, MIG, and resistance welding without the risk of intergranular corrosion.
Tips for Procurement and Cost-Effectiveness
- Supplier Selection
Choose a reputable supplier with a proven track record in the stainless steel industry. Look for suppliers who offer quality assurance certificates, such as ISO 9001, and have a good reputation for on – time delivery.
- Quantity Discounts
Consider purchasing in larger quantities to take advantage of quantity discounts. Many suppliers offer reduced prices for bulk orders, which can significantly reduce the overall cost per unit.
- Negotiation
Don’t be afraid to negotiate with suppliers on price, delivery terms, and payment conditions. A well – negotiated contract can result in cost savings and better terms of service.
Stainless Steel Procurement
- Quality Control
When procuring 430/430L stainless steel sheets, ensure that the material meets the required specifications. Request material test reports (MTRs) from the supplier to verify the chemical composition, mechanical properties, and physical properties of the steel.
- Surface Finish
Choose the appropriate surface finish based on the application requirements. For example, a 2B finish is commonly used for general – purpose applications, while a BA finish is preferred for applications where a bright, reflective surface is desired.
- Dimensional Tolerance
Pay attention to the dimensional tolerance of the stainless steel sheets. Ensure that the thickness, width, and length meet the specified requirements to avoid any issues during fabrication and installation.
Applications of Stainless Steel in Various Industries
- Household Appliances
430/430L stainless steel is widely used in the manufacture of household appliances such as refrigerators, washing machines, and dishwashers. Its good corrosion resistance and formability make it suitable for the production of appliance bodies, panels, and components.
- Automotive Industry
In the automotive industry, 430/430L stainless steel is used for automotive trim, exhaust systems, and fuel tanks. Its good weldability and corrosion resistance make it an ideal material for these applications.
- Architectural Applications
430/430L stainless steel is also used in architectural applications such as roofing, cladding, and handrails. Its aesthetic appeal, durability, and corrosion resistance make it a popular choice for modern architectural designs.
- Food Processing Industry
Due to its good corrosion resistance and ease of cleaning, 430/430L stainless steel is commonly used in the food processing industry for the manufacture of equipment such as tanks, pipes, and conveyor belts.
| Property | 430 Stainless Steel | 430L Stainless Steel | Advantage of 430L |
|---|---|---|---|
| Carbon Content | ≤0.12% | ≤0.030% | Better weldability and corrosion resistance |
| Tensile Strength | 450 – 550 MPa | Slightly lower (due to lower carbon) | – |
| Cost | Lower than austenitic stainless steels | Comparable to 430 but with improved properties | Cost – effective with enhanced properties |
| Applications | Household appliances, automotive trim | Food processing, high – corrosion environments | Broader application range due to improved properties |
In Conclusion
430/430L stainless steel offers the best value among chromium stainless steels:
✔ 430: General-purpose, cost-effective
✔ 430L: Superior weldability
Selection Guide:
Non-welded parts: Standard 430
Welded assemblies: 430L
Budget alternative to 304 where corrosion demands allow
430/430L stainless steel sheets offer a combination of cost – effectiveness, corrosion resistance, formability, and weldability that makes them a versatile material for a wide range of applications. By carefully considering the chemical composition, physical properties, mechanical properties, and procurement tips, you can select the right 430/430L stainless steel sheet for your specific needs and achieve cost – effective solutions in various industries.