440 Stainless Steel Sheet
What is 440 Stainless Steel Sheet?
The 440 stainless steel sheet is a high-carbon martensitic stainless steel recognized for its exceptional hardness and strength, coupled with moderate corrosion resistance. It is widely utilized in applications that demand high wear resistance and the ability to maintain a sharp edge. Within the 440 series, there are primarily two grades: 440A and 440C.
Grade 440A has a lower carbon content, offering good hardness and strength, making it suitable for applications where moderate wear resistance is sufficient. On the other hand, Grade 440C, the most commonly used grade, boasts the highest carbon content, enabling it to achieve the greatest strength, hardness, and wear resistance after heat treatment among all stainless steels. This makes 440C particularly ideal for high-precision and high-stress applications, such as in cutlery, surgical instruments, and mechanical components requiring superior durability and edge retention.
Features of 440 Stainless Steel Sheet
High Carbon Content：440 stainless steel has a high carbon content, particularly in the 440C variant, which contributes to its high hardness and strength after heat treatment. The high carbon content is a defining characteristic, differentiating it from other stainless steels.
High Strength and Toughness: 440 stainless steel sheets exhibit outstanding strength and toughness, capable of withstanding significant external forces and pressures without easily fracturing or deforming. This makes them excel in situations requiring heavy loads or impacts.
Wear Resistance：The high hardness of 440 stainless steel makes it extremely wear-resistant. This characteristic is especially beneficial in applications involving high friction or abrasive environments, such as cutting tools, bearings, and wear plates.
Corrosion Resistance：While not as corrosion-resistant as austenitic stainless steels like 304 or 316, 440 stainless steel still offers good resistance to corrosion in mild environments. The chromium content (16-18%) forms a passive oxide layer that protects against oxidation and rust.
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
Cutlery and Kitchen Tools: Thanks to its high hardness and excellent wear resistance, 440 stainless steel sheet is often used to make high-quality kitchen knives, hunting knives, and industrial cutting tools. This type of stainless steel blade maintains sharpness and resists wear and tear from everyday use, ensuring long tool life and reliable performance.
Other Cutting Tools: Beyond kitchen and hunting knives, 440 stainless steel is ideal for various cutting tools used in industrial and mechanical applications. Its superior hardness and durability make it perfect for precision cutting tools, ensuring they remain sharp and effective even under heavy use.
440 Stainless Steel Sheet Package & Loading Details
At Aoxing, as a premier provider of 440 stainless steel sheets, our dedication extends to the excellence of our packaging and shipping practices, developed from years of export experience. We are well-versed in the standards required for export packaging and take additional steps to reinforce our products within the container, ensuring they withstand the rigors of transportation without damage.
Our 440 stainless steel sheets are individually wrapped in robust, water-resistant materials to guard against environmental elements. To ensure the sheets remain immobile and maintain their pristine condition during transit, we employ strategic bracing within the container. This methodical approach to packaging guarantees that your stainless steel sheets arrive in perfect condition, ready for your project needs.
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 Sheet FAQ
1. Can you provide aisi 440C in different conditions?
Absolutely, we tailor 440c stainless steel sheet to your needs, ensuring your specifications for finishes, thickness, width, length and physical properties are met.
2. What's the delivery time?
Quick delivery for trial orders within a week, while regular orders range from 7-30 days.
3. How do you guarantee your 440 stainless steel sheet /440 stainless steel plate quality?
Our 440 stainless steel sheet/440 stainless steel plate undergo rigorous inspections during manufacturing, cutting, and packaging to ensure the highest quality. And 440 stainless steel sheet mill test certificate is also provided.
4. Can I get some 440 stainless steel samples?
We can provide 440 stainless steel sample for you to check the quality. Sample is free and you just pay the freight.
5. Is 440 stainless steel magnetic?
440 stainless steel is known for its versatility and corrosion resistance, but questions often arise about its magnetic properties. In its annealed state, 440 stainless steel is generally non-magnetic. However, it can become magnetized through cold working processes such as rolling, bending, or shaping. The degree of magnetism induced in 440 stainless steel depends on the extent of cold work and specific conditions under which it is processed.
While 440 stainless steel may acquire some magnetic properties, it's essential to understand that this magnetism is typically much weaker than that of inherently ferromagnetic materials like iron. Despite potential magnetism, 440 maintains its excellent corrosion resistance and other beneficial attributes. For applications where magnetic properties may impact performance, conducting precise tests or consulting with materials specialists is recommended to accurately evaluate the material's behavior in specific scenarios.
6. How to choose a 440 stainless steel supplier?
Selecting a supplier for 440 stainless steel coils 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 coil 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.
