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Help CenterSteel Coil & Strip & Cold Rolled Steel Coil，GB/T5213-2019、GB/T11253-2019；JIS G3141、EN10130、ASTM A1008
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Cold Rolled Steel Coil Detailed Product Specification
1. Product Overview
Cold Rolled Steel Coil (CRC) is manufactured using hot rolled pickled coil as raw material through continuous cold rolling below recrystallization temperature, annealing and temper leveling. Different from hot rolled products, it features oxide-free surface, high dimensional accuracy and smooth finish with excellent stamping performance, widely applied as core raw material for home appliances, automobile parts, hardware and coating substrates.
2. Production Process Flow
Hot Rolled Coil → Pickling for Descaling → Multi-pass Cold Rolling (40%~80% reduction rate) → Batch/Continuous Annealing → Temper Straightening → Slitting/Rewinding → Finished Product Warehousing
Two Main Product Types
Annealed Cold Rolled Coil (Main Delivery Grade: DC/SPCC Series): Free from work hardening with fine ductility, available for bending and deep drawing forming.
Hard Cold Rolled Coil: Non-annealed with high hardness (HRB＞90), only for simple bending and commonly used as galvanizing substrate.
3. Common Grades & Executive Standards
| GB Grade | JIS G3141 | EN10130 | DIN Grade | Application Grade |
|---|---|---|---|---|
| DC01(Q195/Q235) | SPCC | DC01 | ST12 | General use & shallow stamping for housing |
| DC02 | SPCD | DC02 | ST13 | Regular stamping for hardware fittings |
| DC03 | SPCE | DC03 | ST14 | Deep drawing for home appliance inner tank |
| DC04~DC06 | SPCEN | DC04~DC06 | ST15/ST16 | Extra-deep drawing for auto outer panels |
Applicable Standards: GB/T5213-2019, GB/T11253-2019; International Standards: JIS G3141, EN10130, ASTM A1008
4. Dimension Specifications
Thickness: 0.20mm~4.0mm, regular stock range 0.3~2.5mm, thickness tolerance ±0.025~±0.04mm
Width: 600~2000mm, popular sizes:1000/1250/1500mm, customized narrow strip available via slitting
Inner Diameter of Coil: standard 508mm & 610mm
Single Coil Weight: 3~13.5MT, regular 5~10MT per coil, small coil splitting acceptable
5. Surface Grade & Surface Treatment
Surface Classification (GB Standard)
FB(O3) Ordinary Finish: Tiny slight scratches, for general painting & hardware processing
FC(O4) High-grade Finish: Minimal surface defects, for painted home appliance outer casing
FD(O5) Superfine Finish: Defect-free surface, for high-end electroplating & automotive outer sheets
Surface Treatment
Oil-coated for rust prevention or non-oiled bare finish; matte & bright mirror two surface options available.
6. Mechanical Properties (Regular Annealed Status)
| Grade | Yield Strength(MPa) | Tensile Strength(MPa) | Minimum Elongation |
|---|---|---|---|
| DC01/SPCC | ≤300 | ≥270 | 30% |
| DC03/SPCE | ≤260 | ≥270 | 35% |
| DC05 Extra-deep Drawing | ≤220 | ≥265 | ≥39% |
7. Core Product Advantages
High dimensional precision: Thickness & width tolerance far superior to hot rolled steel, perfectly matching automatic stamping production
Smooth surface: Free from oxide scale and pits, directly suitable for painting or electroplating without extra polishing
Superior formability: Good ductility after annealing, no cracking during deep drawing for complex sheet metal parts
Stable metallurgical structure: Consistent mechanical performance for bulk processing.
8. Application Fields
Home Appliance: Shell & inner tank of refrigerator, washing machine, air conditioner and small household appliances
Automobile Industry: Auto interior parts, chassis accessories, lamp housing and stamped structural components
Hardware Products: Steel cabinet, toolbox, steel furniture, fire cabinet and metal barrel
Coating Substrate: Raw material for hot-dip galvanizing, electro-galvanizing and prepainted steel
Construction & Machinery: Light steel keel, precision sheet metal and electrical cabinet accessories
9. Packing, Shipment & Export Terms
Export Packing: Standard moisture-proof rust paper + steel strapping + iron edge protector, seaworthy package suitable for ocean transportation
MOQ: 20MT, mixed sizes acceptable
Loading Port: Tianjin Port, delivery lead time: 5~7 working days for in-stock goods
HS Code:720916 /720926 for non-alloy cold rolled steel coil
10. Chemical Composition Reference (wt%, Low Carbon Cold Rolled Steel)
C ≤0.12%; Mn ≤0.60%; Si ≤0.03%; S ≤0.035%; P ≤0.035%. Low carbon, low sulfur & phosphorus composition guarantees stable stamping performance.
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