QN1803 Stainless Steel Strip
What is QN1803 Stainless Steel Strip?
QN1803 (also known as 304D) is a recently developed new type of high-strength stainless steel. It is the first nitrogen-containing austenitic stainless steel. Compared to the widely used EN 1.4301 stainless steel, it has higher corrosion resistance, lower costs due to lower nickel content (estimated 20%) and higher yield strength (estimated 40%). The chromium content of QN1803 stainless steel ranges from 17.5% to 19.5%, which is similar to the chromium composition of S30408 stainless steel. This shows that QN1803 stainless steel has the same anti-corrosion properties as S30408. Therefore, QN1803 can be used as an alternative to EN 1.4301 for large steel structures.
Features of QN1803 Stainless Steel Strip
Features of QN1803 Stainless Steel Strip
High Strength: QN1803 stainless steel strip offers high tensile and yield strength, making it suitable for demanding applications requiring robust mechanical properties.
Corrosion Resistance: It provides excellent corrosion resistance, making it ideal for use in environments where exposure to moisture and corrosive substances is a concern.
Nitrogen-Enhanced: The addition of nitrogen enhances its strength and corrosion resistance compared to traditional austenitic stainless steels like 304.
Non-Magnetic: This stainless steel strip remains non-magnetic in both annealed and cold-worked conditions, which is beneficial for applications where non-magnetic properties are essential.
QN1803 Stainless Steel Chemical Composition & Technical Data Sheet
Chemical Composition of QN1803 (vs. 304)
| Stainless Steel Grade | QN1803 | 304 | |
| Chemical Composition(%) | Standard | T/CISA 022-2019 | ASTM A240 |
| C | ≤0.10 | 0.04 | |
| Si | ≤1.00 | 0.40 | |
| Mn | 4.00-8.00 | 1.05 | |
| P | ≤0.050 | 0.035 | |
| S | ≤0.005 | 0.0021 | |
| Cr | 17.50~19.50 | 18.11 | |
| Ni | 2.00~3.50 | 8.02 | |
| Mo | ≤0.30 | 0.02 | |
| Cu | 1.00-3.50 | 0.12 | |
| N | 0.20-0.30 | 0.045 | |
| Nb+Ti | / | / | |
| PREN | >19.0 | 18.51 | |
Performance of QN1803 Stainless Steel（vs. 304）
| Stainless Steel Grade | QN1803 | 304 | |
| Physical Properties | Density (g/cm³) | 7.83 | 7.93 |
| Specific Heat Capacity (KJ/(kg*K)) | 0.67 | 0.50 | |
| Thermal Conductivity (W/(m*K)) | 20.7 | 16.3 | |
| Thermal Diffusivity (mm²/s) | 3.96 | 4.11 | |
| Thermal Expansion Coefficient (10⁶/K) | 16.8 | 17.2 | |
| Electrical Resistivity (Ω*mm²/m) | 0.72 | 0.73 | |
| Elastic Modulus (kN/mm²) | 196 | 193 | |
QN1803 Stainless Steel Mechanical Properties (vs. 304)
| Stainless Steel Grade | QN1803 | 304 | |
| Mechanical Properties | Thickness (mm) | 0.50 | 0.50 |
| Tensile Strength (Rm) (MPa) | 747 | 670 | |
| Yield Strength (Rp₀.₂) (MPa) | 432 | 290 | |
| Elongation (%) | 51.6 | 58.5 | |
| Hardness (HV) | 230 | 165 | |
| 180° Cold Bend | Intact | Intact | |
QN1803 Stainless Steel Finish & Application
QN1803 Stainless Steel Strip: Finish & Applications
The versatile QN1803 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.
QN1803 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.
QN1803 Stainless Steel Strip FAQ
Q: What is QN1803 stainless steel strip used for?
A: QN1803's enhanced performance and cost-efficiency make it an attractive alternative to traditional 304 stainless steel in these and other applications.
Q: Is QN1803 stainless steel strip magnetic?
A: No, QN1803 stainless steel strip is not magnetic. As an austenitic stainless steel, it typically has a face-centered cubic (FCC) crystal structure, which is non-magnetic in nature.
Q: What are the mechanical properties of QN1803 stainless steel strip?
A: QN1803 stainless steel strip is a strong and ductile material, suitable for a wide range of applications where both strength and corrosion resistance are required. The exact mechanical properties can vary based on specific processing and heat treatment
Q: Can QN1803 stainless steel strip be used in high-temperature environments?
A: No, QN1803 stainless steel strip, while offering high strength and corrosion resistance, is not specifically designed for high-temperature environments. Its properties are optimized for general-purpose applications where corrosion resistance and mechanical strength are important, but it does not have the same high-temperature capabilities as alloys like 310 stainless steel.
Q: How to choose a QN1803 stainless steel supplier?
A: Selecting a supplier for QN1803 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 QN1803 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.
