304 Stainless Steel Sheet Coil With Mill Test Report and Warranty
Product Spotlights
Zhongzheng Stainless Steel Co., Ltd., headquartered in Tianjin, China, has been a trusted supplier of high-quality stainless steel products to markets across North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East for over a decade. Our 304 Stainless Steel Sheet Coil is engineered to deliver exceptional corrosion resistance, durability, and formability for a wide range of industrial applications. Every coil and sheet is accompanied by a Mill Test Report and backed by a comprehensive warranty, ensuring you receive material that meets strict international standards. Whether you need thin coils for deep drawing or thick sheets for structural components, our product offers consistent performance and long-term value.
Key Features & Specifications
- Grade 304 Stainless Steel: Excellent resistance to oxidation and corrosion in most atmospheric environments, suitable for food processing, chemical storage, and architectural cladding.
- Comprehensive Mill Test Report: Each batch is tested for chemical composition (C, Mn, P, S, Si, Cr, Ni) and mechanical properties (tensile strength, yield strength, elongation), providing full traceability.
- 12-Month Warranty: Covers material defects in workmanship and manufacturing, giving you peace of mind for your project planning.
- Customizable Dimensions: Available in wide range of thicknesses (0.3mm–6.0mm), widths (600mm–2000mm), and custom lengths or coil weights to match your production requirements.
- Multiple Surface Finishes: Choose from standard 2B (cold rolled, bright finish), BA (bright annealed), No.1 (hot rolled, annealed, pickled), or 8K mirror finish for decorative purposes.
- Precision Edge Condition: Slit edges or mill edges available; option for deburred edges for safety in handling.
- Excellent Formability & Weldability: Suitable for bending, stamping, drawing, and welding without cracking or losing corrosion resistance.
- Standard Export Packaging: Each coil/sheet is wrapped with anti-rust paper, plastic film, and secured on strong wooden pallets to prevent damage during transit.
Technical Data Sheet
| Parameter | Typical Value / Range | Note |
|---|---|---|
| Grade | 304 (UNS S30400) | Equivalent to 1.4301 |
| Chemical Composition (%) | Cr: 18.0–20.0, Ni: 8.0–10.5, C ≤0.08, Mn ≤2.0, P ≤0.045, S ≤0.030, Si ≤1.0 | Per ASTM A240 |
| Tensile Strength (MPa) | ≥515 | Room temperature |
| Yield Strength 0.2% (MPa) | ≥205 | Offset method |
| Elongation (% in 50 mm) | ≥40 | High ductility |
| Hardness (Rockwell B) | ≤92 | Typical |
| Surface Roughness (Ra) | ≤0.5 µm (2B finish) | Customizable |
| Flatness Tolerance | ≤5mm per 1000mm (custom order available) | Per standard |
| Packaging Type | Sea-worthy – Anti-rust paper + VCI film + Steel strapping | Custom option available |
Why Choose Zhongzheng 304 Stainless Steel Sheet/Coil?
- Reliable Traceability: Each delivery includes a Mill Test Report that documents actual test results, ensuring your material meets stringent quality requirements.
- Lower Scrap Rates: Consistent gauge and flatness reduce material waste during stamping or bending operations.
- Fast Lead Times: Located in Tianjin, a major port city, we ship globally within 15–25 working days after order confirmation. Stock sizes available for urgent orders.
- Certified Production Process: Our manufacturing follows a strict quality control system – from hot rolling to cold rolling, annealing, pickling, and finishing – all monitored by experienced engineers.
- Custom Processing Services: We offer slitting, cutting to length, edge deburring, and surface polishing to your exact specifications (optional surcharge applies).
- After-Sales Support: A dedicated team is available for technical consultation and claims handling under warranty.
Trusted By Global Customers
Zhongzheng Stainless Steel Co., Ltd. has built a solid reputation by serving customers in over 20 countries and regions, including North America, Europe, Southeast Asia, and the Middle East. Our annual production capacity exceeds 50,000 metric tons of stainless steel sheets and coils. We have long-term partnerships with local distributors and end-users in the kitchenware, construction, and automotive parts industries. When you purchase our 304 stainless steel sheet coil, you are backed by a company that prioritizes quality, reliability, and customer satisfaction. With a Mill Test Report and 12-month warranty included as standard, we invite you to experience the Zhongzheng difference – contact us today for a quote or technical sample.
Frequently Asked Questions (FAQ)
-
Q: What does the Mill Test Report (MTR) include?
A: The MTR provides the certified chemical analysis (C, Mn, P, S, Si, Cr, Ni) and mechanical properties (tensile, yield, elongation) for each heat number. It is issued by our factory and complies with ASTM A240 / A480 requirements. -
Q: Can this product be used for food contact surfaces?
A: Yes, grade 304 stainless steel is widely accepted for food processing and kitchen equipment due to its corrosion resistance and ease of cleaning. However, we recommend verifying local food safety regulations for your specific application. -
Q: What thickness tolerance do you guarantee?
A: We follow ASTM A480 tolerances. For example, thicknesses 0.3–3.0mm have a tolerance of ±0.05mm; for thicker materials, tolerance is ±0.10mm. Tighter tolerances are available upon request subject to additional cost. -
Q: Do you provide small sample coils for trial?
A: Yes, we can prepare sample coils or cut pieces (approx. 200mm x 200mm) at nominal cost plus shipping. Please contact our sales team to discuss your requirements. -
Q: What is the warranty coverage period and what does it cover?
A: The standard warranty is 12 months from the date of shipment, covering defects in material and workmanship. It does not cover damage caused by improper handling, storage, or abnormal use. Please refer to our warranty policy for full terms. -
Q: Can you supply material with a brushed or mirror finish?
A: Absolutely. We offer 2B, BA, No.1, and 8K mirror finish. Brushed (hairy) finish is also available as an option. Lead time may increase slightly for non-standard finishes. -
Q: How are the coils packaged for sea freight?
A: Each coil is tightly wrapped with anti-rust paper, a layer of VCI (volatile corrosion inhibitor) film, and secured with steel strapping on a heavy-duty wooden pallet. For sheet piles, we use interleaving paper and plywood sheets. The packaging is suitable for long-distance sea transport. -
Q: What is the minimum order quantity (MOQ) for custom sizes?
A: For standard sizes (e.g., 4x8 ft sheets), MOQ is 5 tons. For custom dimensions, MOQ is typically 10 tons. Smaller quantities may be possible at a price premium – please inquire with our team.
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