439 Stainless Steel Strip
What is 439 Stainless Steel Strip?
Grade 439 stainless steel strip is a ferritic stainless steel designed to resist corrosion in various oxidizing environments, ranging from fresh water to hot acids. Stabilized with titanium, this 18% chromium alloy can be used in many oxidizing conditions where Type 304 stainless steel strip is considered sufficient for overall corrosion resistance but is vulnerable to chloride stress corrosion cracking. Grade 439 stainless steel strip is often chosen when higher thermal conductivity is needed. It does not require annealing after welding to restore ductility or resistance to intergranular corrosion. Additionally, Grade 439 stainless steel strip offers superior formability and is widely used in the automotive industry; it can be easily annealed to enhance tensile strength.
Features of 439 Stainless Steel Strip
Features of 439 Stainless Steel Strip
1)Good Corrosion Resistance: 439 stainless steel provides excellent corrosion resistance in a variety of oxidizing environments, from fresh water to hot acids. It is comparable to Type 304 stainless steel but with added resistance to chloride stress corrosion cracking.
2)Enhanced Weldability: The titanium stabilization in 439 stainless steel improves its weldability. It does not require post-weld annealing to restore ductility or to resist intergranular corrosion, simplifying the welding process.
3)High Thermal Conductivity: 439 stainless steel offers better thermal conductivity compared to many other stainless steels, making it suitable for applications where efficient heat transfer is important.
4)Resistance to Stress Corrosion Cracking: It is less susceptible to chloride stress corrosion cracking compared to austenitic stainless steels, making it suitable for environments where this type of failure is a concern.
5)Magnetic Properties: 439 stainless steel is magnetic, which can be an advantage in applications where magnetism is required.
439 Stainless Steel Chemical Composition & Technical Data Sheet
439 Stainless Steel Standards Comparison
| Grade | Standard | Chemical Composition(%) | |||||||
| C | Si | Mn | P | S | Cr | Ni | Ti | ||
| 439 | ASTM A240 | ≤0.03 | ≤1.00 | ≤1.00 | ≤0.040 | ≤0.003 | 17.00~19.00 | ≤0.50 | 0.30~0.50 |
439 Stainless Steel Chemical Composition
| Grade | AISI/ASTM | Tensile Test | Hardness Test | |||
| 0.2% Y.S(Mpa) | T.S(Mpa) | Elongation(%) | Hardness | HRB | ||
| 410 | ASTM A240 | ≥275 | ≥485 | ≥20 | Annealed | 96 |
439 Stainless Steel Mechanical Properties
| Grade | Tensile Test | Hardness Test | |||
| 0.2% Y.S(Mpa) | T.S(Mpa) | Elongation(%) | Hardness | HV | |
| 439 | ≥230 | ≥415 | ≥20 | Annealed | 180 |
439 Stainless Steel Finish & Application
439 Stainless Steel Strip: Finish & Applications
The versatile 439 stainless steel strip is suitable for various applications, each tailored by the specific surface finish it bears:
BA Finish: Utilized in building construction, kitchenware, and electrical appliances.
2B Finish: Ideal for food processing equipment and medical instruments.
No. 3 Finish: Applied in building construction and kitchen utensils.
No. 4 Finish: Commonly used in medical devices and household utensils.
HL Finish: Chosen for construction equipment.
No. 1 Finish: Suitable for pipelines and chemical storage tanks.
439 Stainless Steel Strip Package & Loading Details
Why Choose Us?
We are the cold-rolled stainless steel coil production base in China with 200,000 tons capacity annually.
1. Guaranteed Stock Availability: Experiencing stock shortages during crucial times can hinder your projects. Our robust inventory management ensures a consistent supply, ready to dispatch large quantities swiftly, keeping your operations smooth and uninterrupted.
2. Comprehensive Range of Specifications: Finding the exact stainless steel coil specifications can be challenging. We offer a diverse range of specs, ensuring you find precisely what your project demands, with the assurance of our commitment to meeting your specific needs.
3. Customized Material Processing: Custom processing needs can be demanding. Our advanced facilities provide tailored solutions, from precise dimension alterations to specific finish treatments, ensuring your requirements are met with utmost precision.
4. Accurate Shearing Services: Precision is key in stainless steel utilization, and our expert shearing services guarantee exactness in every cut, aligning perfectly with your specifications and quality expectations.
5. Cost-effectiveness is crucial in supplier selection. Our optimized procurement and cost-efficient processes ensure you receive not just premium-quality products but also the best prices, offering exceptional value for your investment.
439 Stainless Steel Strip FAQ
Q: What is 439 stainless steel strip used for?
A: 439 stainless steel strip is used in various applications where its unique combination of properties, such as good corrosion resistance, enhanced weldability, and resistance to stress corrosion cracking, is beneficial.
Q: Can 439 stainless steel strip be welded?
A: Yes, Due to its titanium stabilization, 439 stainless steel exhibits excellent resistance to intergranular corrosion and stress corrosion cracking, making it a good choice for applications where weldability is important.
Q: Is 439 stainless steel strip magnetic?
A: Yes, 439 stainless steel strip is magnetic. As a ferritic stainless steel, it exhibits magnetic properties in all conditions. This characteristic is due to its body-centered cubic (BCC) crystal structure, which is typical of ferritic stainless steels.
Q: Can 439 stainless steel strip be used in high-temperature environments?
A: Yes, While 439 stainless steel performs well in high-temperature conditions. For extremely high-temperature environments, other grades of stainless steel, such as 309 or 310, may offer better performance.
Q: What are the mechanical properties of 439 stainless steel strip?
A: Type 439 has good weldability due to titanium stabilization and has excellent resistance to stress corrosion cracking.
Q: How to choose a 439 stainless steel supplier?
A: Selecting a supplier for 439 stainless steel strip involves a series of steps to ensure quality and reliability:
Research Suppliers: Utilize online resources to identify reputable suppliers specializing in stainless steel, focusing on those with a strong industry presence and positive reviews.
Engage with Suppliers: Contact the suppliers to discuss their 439 stainless steel strip offerings, including specifications, pricing, and availability. Consider requesting samples for quality assessment.
Assess Credibility: Evaluate the suppliers' credibility by reviewing their business credentials, certifications, and customer feedback, ensuring they adhere to industry standards and best practices.
Compare Quotations: Solicit and compare quotes from various suppliers, clarifying your specific needs such as quantity, specifications, and delivery details to make an informed decision.
Verify Quality Assurance: Investigate the suppliers' quality control processes and request relevant test reports or certifications to confirm the coils meet your required standards.
Negotiate Terms: Discuss and negotiate key terms, including pricing, delivery, and payment conditions, ensuring they align with your requirements.
Order Placement: Finalize the purchase by confirming the order details, such as the coil specifications, quantities, and agreed terms.
Arrange Payment: Agree on a secure payment method that suits both parties, ensuring all financial terms are clear and documented.
Coordinate Shipping: Organize the logistics, including packaging, shipping, and customs clearance, to ensure the coils are delivered as expected.
Inspect Upon Arrival: Upon receiving the coils, inspect the shipment for quality and accuracy, addressing any discrepancies with the supplier immediately.
