440 Stainless Steel Strip
What is 440 Stainless Steel Strip?
Grade 440 stainless steel strips are renowned for their moderate corrosion resistance, high strength, hardness, and exceptional wear resistance. This martensitic stainless steel contains elevated levels of carbon, contributing to its outstanding mechanical properties. Through heat treatment, 440 stainless steel strips can achieve maximum wear resistance, hardness, and strength, surpassing other stainless steel strips. These characteristics make it ideal for manufacturing valve parts and ball bearings, where durability and performance under high stress and wear conditions are critical.
Features of 440 Stainless Steel Strip
Features of 440 Stainless Steel Strip
High Carbon Content: 440 stainless steel strip is characterized by its high carbon content, which contributes to its high hardness and wear resistance after heat treatment.
Corrosion Resistance: While not as corrosion resistant as austenitic stainless steels, 440 stainless steel strip offers moderate corrosion resistance suitable for many applications.
High Strength: It exhibits high tensile strength and can withstand significant mechanical stress, making it suitable for applications requiring strength and durability.
Wear Resistance: After heat treatment, 440 stainless steel strip achieves excellent wear resistance, making it suitable for applications such as cutting tools, blades, and bearings.
440 Stainless Steel Chemical Composition & Technical Data Sheet
440 Stainless Steel Standards Comparison
| STS | USA | UNS | CHINA | EURONORM | RUSSIA | SWEDISH | JAPANESE | |
| GRADE | AISI/ASTM | NO | GB | NO | NAME | GOST | SS | JIS |
| 440A | 440A | S44002 | 12Cr13 | 1.4109 | X65Cr13 | - | 10088-1 | SUS 440A |
| 440C | 440C | S44004 | 40Cr13 | 1.4125 | X105CrMo17 | 95X18 | 10088-3 | SUS 440C |
440 Stainless Steel Chemical Composition
| Grade | Standard | Chemical Composition(%) | ||||||
| C | Si | Mn | P | S | Cr | Mo | ||
| 440A | ASTM 440A | 0.60~0.75 | ≤1.00 | ≤1.00 | ≤0.040 | ≤0.030 | 16.00~18.00 | ≤0.75 |
| 440C | ASTM 440C | 0.95~1.20 | ≤1.00 | ≤1.00 | ≤0.040 | ≤0.030 | 16.00~18.00 | ≤0.75 |
440 Stainless Steel Mechanical Properties
| Grade | Tensile Test | Hardness Test | |||
| 0.2% Y.S(Mpa) | T.S(Mpa) | Elongation(%) | Hardness | HBN | |
| 440A | 415 | 725 | ≥20 | Annealed | 95 |
| 440C | 450 | 760 | ≥14 | Annealed | 97 |
440 Stainless Steel Finish & Application
440 Stainless Steel Strip: Finish & Applications
The versatile 440 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.
440 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.
440 Stainless Steel Strip FAQ
Q: What is 440 stainless steel strip used for?
A: 440 stainless steel strip is used in a variety of applications that require high strength, hardness, wear resistance, and good corrosion resistance.
Q: Is 440 stainless steel strip magnetic?
A:Yes, 440 stainless steel strip is magnetic. As a martensitic stainless steel, it contains higher carbon content and can be hardened by heat treatment, which contributes to its magnetic properties. Martensitic stainless steels, such as 440 stainless steel, have a body-centered cubic (BCC) crystal structure that is ferromagnetic.
Q: What are the mechanical properties of 440 stainless steel strip?
A: The mechanical properties of 440 stainless steel strip can vary depending on the specific grade and heat treatment.
Q: Can 440 stainless steel strip be used in high-temperature environments?
A: No,martensitic stainless steels like 440 are not as resistant to oxidation at high temperatures compared to austenitic stainless steels. They can experience scaling and surface degradation when exposed to elevated temperatures for extended periods.
Q: How to choose a 440 stainless steel supplier?
A: Selecting a supplier for 440 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 440 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.
