Extra Deep Drawing Quality · Anti-Fishscale Guaranteed · Ideal for Traditional Enameling Process Household Enamelware, Water Heater Tanks, Sanitary Ware, Complex Stamped Components
📋 Product Overview
DC04EK 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 EK classification (traditional enameling process), it offers excellent extra deep drawability, superior enamel adhesion, and reliable anti-fishscale performance. Supplied in annealed + skin-passed condition, mechanical properties are guaranteed for 6 months from manufacture date.
📌 Grade code: D (cold forming) + C (cold rolled) + 04 (stamping level 04) + EK (traditional enameling).
🌍 International Grade Cross Reference
According to GB/T 13790-2025 Appendix A Table A.1:
DC04EK
GB/T 13790-2025
C (max %)0.06
Mn (max %)0.50
P (max %)0.025
S (max %)0.030
Als (min %)0.010
🔹 Traditional enameling · Level 04
DC04EK
EN 10209:2023 (EU)
C (max %)0.06
Mn (max %)0.50
P (max %)0.025
S (max %)0.030
Als (min %)0.010
🇪🇺 European standard compatible
VE03 Type 1
ISO 5001:2012
C (max %)0.06
Mn (max %)0.50
P (max %)0.025
S (max %)0.030
Als (min %)0.010
🌐 ISO standard equivalent Type 1
※ Cross reference strictly based on GB/T 13790-2025 Appendix A Table A.1. DC04EK corresponds to EN 10209:2023 DC04EK and ISO 5001 VE03 Type 1. Hydrogen permeation test TH ≥ 6.7 min/mm² ensures anti-fishscale performance.
🧪 Chemical Composition
Ladle analysis per GB/T 13790-2025 Table 5:
Grade
C (max)
Mn (max)
P (max)
S (max)
Als (min)
Ti (max)
DC04EK
0.06%
0.50%
0.025%
0.030%
0.010%
—
📌 Key Features Low carbon (≤0.06%) and low manganese (≤0.50%) ensures excellent extra deep drawability and weldability; aluminum content (≥0.010%) promotes enamel adhesion and prevents fishscale. Stricter P (≤0.025%) and S (≤0.030%) for superior enameling performance.
* 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. Plastic strain ratio r90 ≥1.7 (thickness ≥0.50mm).
🧪 Process Support Free technical consultation for enameling process
📌 EK Classification: Suitable for traditional two-coat enameling process. Excellent enamel wettability and reduced risk of pinholing. Superior anti-fishscale performance guaranteed.
❓ Frequently Asked Questions
📦 What is the lead time for DC04EK 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.
🧪 How does DC04EK prevent fishscaling during enameling?
DC04EK features strictly controlled chemistry (low carbon ≤0.06%, aluminum killed) and hydrogen permeation test value TH ≥ 6.7 min/mm² per GB/T 13790-2025 Annex B, which effectively blocks hydrogen diffusion and prevents fishscale defects. We can provide the hydrogen permeation test report upon request.
🎨 What surface quality levels are available for DC04EK?
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
Submit your requirements. Our team will respond within 24 hours.
