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Help CenterBright Black Annealed Carbon Steel Coil ASTM Certified Low Carbon CRC for Deep Drawing
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Introducing our Bright Black Annealed Carbon Steel Coil — a premium low-carbon CRC (Cold Rolled Coil) specifically engineered for demanding deep drawing applications. As a direct manufacturer, Wuxi Yansheng Technology Co., Ltd. combines advanced annealing technology with strict ASTM standards to deliver coils that offer exceptional ductility, uniform surface finish, and consistent mechanical properties. Whether you are producing automotive panels, kitchenware, or industrial enclosures, this coil ensures smooth forming without cracking or tearing, reducing scrap rates and enhancing production efficiency. Our commitment to quality and reliability has made us a trusted supplier across global markets.
Product Features & Technical Specifications
Bright Black Annealed Surface: Provides an oxide-free, clean surface ideal for subsequent painting or plating, while the black oxide layer offers temporary corrosion resistance during storage and transportation.
Low Carbon Content (≤0.08%): Ensures excellent formability and weldability, critical for complex deep drawing operations where high elongation is required.
ASTM Certified: Manufactured in compliance with ASTM A1008/A109 standards, guaranteeing consistent chemical composition and mechanical properties batch after batch.
Uniform Mechanical Properties: The annealing process delivers a soft, ductile material with typical yield strength around 170-210 MPa and elongation over 40%, minimizing the risk of edge cracking.
Precise Dimensional Tolerances: Thickness tolerance within ±0.05mm and width tolerance within ±0.5mm, enabling high-precision stamping and reduced tooling wear.
Excellent Drawability: The fine grain structure and low hardness (HRB 50-70) allow multiple deep drawing passes without intermediate annealing, saving time and energy.
Customizable Coil Specifications: Available in various widths, thicknesses, and inner diameters (ID 508mm/610mm) to suit your specific machinery and production requirements.
| Parameter | Typical Value |
| Carbon Content | 0.04% - 0.08% |
| Tensile Strength | 270 - 350 MPa |
| Yield Strength | 170 - 210 MPa |
| Elongation (A50) | ≥ 40% |
| Hardness (HRB) | 50 - 70 |
| Surface Roughness (Ra) | 0.8 - 1.5 μm |
| Coil Inner Diameter | 508 mm / 610 mm (Customizable) |
Key Benefits for Your Business:
Reduced Production Costs: High formability means fewer rejects and less material waste, directly improving your bottom line.
Faster Cycle Times: The ability to perform multiple deep drawing steps without intermediate annealing speeds up your production process.
Consistent Quality: Rigorous testing at each stage — from raw material inspection to final coil packaging — ensures every meter meets your specifications.
Supply Chain Reliability: With an annual export value exceeding US$50 million and multiple ports of shipment (Tianjin, Shanghai, Qingdao, Ningbo), we guarantee timely delivery even for large-volume orders.
Technical Support: Our experienced engineering team provides application advice and troubleshooting, helping you optimize tool design and process parameters.
Trust & Credentials
Established in 2017, Wuxi Yansheng Technology Co., Ltd. operates a 1,000–3,000 m² factory with 101–200 skilled employees dedicated to steel processing and quality control. Our management systems are certified under ISO 9001, ISO 14000, and OHSAS 18001, reflecting our commitment to quality, environment, and occupational health. We have served markets across North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East, earning a reputation for consistency and integrity. Our annual export volume of US$50–100 million demonstrates the global trust placed in our products. With full traceability from melt source to finished coil, we provide mill test certificates upon request.
Ready to elevate your deep drawing operations? Contact our sales team for a quotation, technical datasheet, or free sample. We offer flexible terms, including FOB, CIF, and CFR to major ports worldwide. Let us be your long-term partner in quality steel solutions.
Frequently Asked Questions
Q1: What is the difference between bright black annealed and regular black annealed coil?
A1: Bright black annealed coil undergoes a controlled atmosphere annealing process that prevents heavy oxidation, resulting in a cleaner, more uniform black surface. It offers better surface quality for painting and plating compared to conventional black annealed coil.
Q2: Can this coil be used for automotive deep drawing parts?
A2: Yes, it is suitable for automotive components such as oil pans, brake backing plates, and structural brackets, thanks to its low carbon content and excellent elongation. However, for critical safety parts, we recommend evaluating specific grade requirements.
Q3: What packing methods are used to prevent rust during sea shipment?
A3: Coils are wrapped with VCI (Volatile Corrosion Inhibitor) paper, sealed with polyethylene film, and then steel-strapped with edge protectors. Outer packing can be customized with wooden crates or steel frames for additional protection.
Q4: Do you provide sample coils for trial before bulk order?
A4: Yes, we offer free sample coils (subject to freight charges) with a typical lead time of 5–7 days. Samples are cut from full production runs to represent actual quality.
Q5: What is the minimum order quantity (MOQ)?
A5: Our standard MOQ is 25 tons per size, but we can accommodate smaller trial orders of 5–10 tons for new customers. Please discuss with our sales representative.
Q6: How do you ensure the ASTM certification compliance?
A6: Each production batch is tested in our in-house laboratory for chemical composition, tensile and hardness properties. We also engage third-party inspectors (e.g., SGS, BV) upon customer request. The mill test certificate is issued with every shipment.
Q7: Can you supply coils in slit widths or narrow strips?
A7: Yes, we offer slitting services to produce custom widths from 50mm up to the full mill edge. Additional processing time and cost apply.
Q8: What payment terms do you accept?
A8: We accept T/T (30% deposit, 70% against copy of B/L), L/C at sight, and for long-term customers, negotiable terms. We also support letters of credit from major international banks.
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