Extra Deep Drawing Direct-On Enameling Grade · Anti-Fishscale Guaranteed · Excellent Dent Resistance One-Coat Enameling Process, Water Heater Tanks, Sanitary Ware, Complex Stamped Components
📋 Product Overview
DC04ED is a premium cold rolled low carbon steel sheet specially designed for vitreous enamelling, conforming to GB/T 13790-2025. With stamping level 04 (extra deep drawing) and ED classification (direct-on enameling process with anti-denting requirements), it offers excellent extra deep drawability, superior enamel adhesion, reliable anti-fishscale performance, and enhanced dent resistance. Supplied in annealed + skin-passed condition after decarburization annealing, mechanical properties are guaranteed for 6 months from manufacture date.
📌 Grade code: D (cold forming) + C (cold rolled) + 04 (stamping level 04) + ED (direct-on enameling & anti-denting).
🌍 International Grade Cross Reference
According to GB/T 13790-2025 Appendix A Table A.1:
※ Cross reference strictly based on GB/T 13790-2025 Appendix A Table A.1. DC04ED corresponds to EN 10209:2023 DC04ED, JIS G3133:2021 SPPE, and ISO 5001 VE03 Type 2. Hydrogen permeation test TH ≥ 6.7 min/mm² ensures anti-fishscale performance.
🧪 Chemical Composition
Ladle analysis per GB/T 13790-2025 Table 5. Decarburization annealing applied, carbon content specified after decarburization.
Grade
C (max)
Mn (max)
P (max)
S (max)
Als
Ti
DC04ED
0.004%
0.40%
0.025%
0.050%
—
—
📌 Key Features Extra-low carbon (≤0.004%) achieved through decarburization annealing ensures superior enamel adhesion for direct-on enameling process. Low manganese (≤0.40%) provides excellent extra deep drawability and weldability. Strict P (≤0.025%) and S (≤0.050%) control for outstanding enameling performance. Enhanced dent resistance for anti-denting applications.
* When yield point is not obvious, use Rp0.2. Lower yield strength negotiable to 140 MPa upon agreement. For thickness ≥1.5mm, yield strength upper limit is 225 MPa. ED grade offers enhanced dent resistance for direct-on enameling applications.
🧪 Process Support Free technical consultation for enameling process
📌 ED Classification: Suitable for direct-on (one-coat) enameling process and also suitable for traditional two-coat enameling. Decarburization annealing (C ≤0.004%) ensures excellent enamel adhesion without requiring a ground coat. Enhanced dent resistance for anti-denting requirements. Superior extra deep drawability for complex shapes.
❓ Frequently Asked Questions
📦 What is the lead time for DC04ED enameling steel?
Our standard lead time is 35-55 days after order confirmation, depending on quantity and specification requirements. Express delivery options are available upon request.
💰 What is the minimum order quantity (MOQ)?
The typical MOQ is 25 tons per specification. Trial orders of 10-15 tons can be arranged for customer qualification. Contact us for sample requests.
🧪 What is the difference between DC04ED and DC04EK?
DC04ED features extra-low carbon (≤0.004%) through decarburization annealing, making it suitable for direct-on (one-coat) enameling with enhanced dent resistance. DC04EK (carbon ≤0.06%) is designed for traditional two-coat enameling. DC04ED is also suitable for traditional enameling processes.
🎨 What surface quality levels are available for DC04ED?
We offer FB (finish B), FC (finish C), and FD (superior) surface quality per GB/T 13790-2025 Table 8. FC and FD surfaces are guaranteed to have no visible defects on the better side, ensuring excellent enameling appearance.
📄 How long are the mechanical properties guaranteed?
Per GB/T 13790-2025 clause 7.2, mechanical properties (yield strength, tensile strength, elongation) are guaranteed for 6 months from the date of manufacture, provided proper storage conditions. However, due to aging effects, we recommend using the material as soon as possible for optimal forming performance.
🚢 What packaging options are available for export?
We offer export-grade moisture-proof packaging including VCI anti-rust paper, waterproof underlayer, edge protection, and seaworthy wooden pallets. Standard oiled or dry (non-oiled) options are available based on your requirements.
📞 Quick Inquiry
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