SPCC Cold Rolled Carbon Steel Coil — Factory Direct Supplier | Huaxia-Steel
SPCC cold rolled carbon steel coil is the most widely used cold-rolled steel product in Asia for general fabrication, automotive parts, appliances, furniture, and light gauge formed components. Manufactured per JIS G3141 from hot-rolled pickling-rolled coil (SPHC), SPCC offers a smooth bright surface, tight thickness tolerance (±0.02-0.05 mm), excellent formability, and consistent mechanical properties. Huaxia-Steel supplies SPCC coil directly from JIS-certified Chinese and Korean mills in thicknesses 0.20-3.00 mm, widths 600-1,500 mm, with full JIS-compliant mill test certificates.
Product Overview
SPCC (Steel Plate Cold-rolled Commercial) is the entry-level cold-rolled steel grade in the JIS G3141 system. It is produced by:
- Pickling the hot-rolled coil in HCl acid to remove mill scale
- Cold rolling in a 4-high or 6-high tandem mill to reduce thickness by 50-90%
- Annealing in a continuous annealing line (CAL) or batch anneal to restore ductility
- Temper rolling (skin pass) at 0.5-2.0% reduction to improve flatness and prevent stretcher strain
- Oiling for corrosion protection during storage and shipping
The result is a smooth, dimensionally precise, ductile steel sheet suitable for deep drawing, bending, roll forming, and general fabrication.
JIS G3141 Grade Comparison
| JIS Grade | Type | Yield (MPa max) | Tensile (MPa min) | Elongation (min) | Typical Use |
|---|---|---|---|---|---|
| SPCC | Commercial | — | 270 min | — (typical 32-40%) | General forming, appliance cabinets |
| SPCD | Drawing | — | 270 min | 34% | Automotive panels, deep drawing |
| SPCE | Deep Drawing | — | 270 min | 36% | Critical deep drawing, stamping |
| SPCF | Extra-Deep Drawing | — | 270 min | 38% | Specialized deep drawing (auto) |
For most import and fabrication applications, SPCC is the default grade. For deep drawing and stamping applications where formability is critical, upgrade to SPCD or SPCE at a 3-8% price premium.
Specifications & Dimensional Range
| Specification | Range | Tolerance |
|---|---|---|
| Thickness | 0.20 – 3.00 mm | ±0.02-0.05 mm (per JIS G3141) |
| Width | 600 – 1,500 mm | 0 to +5 mm |
| Coil ID | 508 mm (20″) or 610 mm (24″) | Standard |
| Coil OD | Max 1,800 mm | Per coil weight |
| Coil weight | 5-25 tons typical | Per order |
| Surface finish | Bright (default), matte (rough matte) | Per order |
| Oiling | 0.5-2.0 g/m² (dry to oiled) | Per order |
Per-Square-Meter Weight (SPCC)
| Thickness (mm) | Weight (kg/m²) | Thickness (in) | Weight (lb/ft²) |
|---|---|---|---|
| 0.30 | 2.36 | 0.012 | 0.48 |
| 0.50 | 3.93 | 0.020 | 0.80 |
| 0.80 | 6.28 | 0.031 | 1.28 |
| 1.00 | 7.85 | 0.039 | 1.60 |
| 1.20 | 9.42 | 0.047 | 1.92 |
| 1.50 | 11.78 | 0.059 | 2.41 |
| 2.00 | 15.70 | 0.079 | 3.21 |
| 2.50 | 19.63 | 0.098 | 4.01 |
| 3.00 | 23.55 | 0.118 | 4.81 |
Chemical Composition (Heat Analysis, % max unless range)
| Element | SPCC | SPCD | SPCE | Function |
|---|---|---|---|---|
| Carbon (C) | 0.15 max | 0.10 max | 0.08 max | Strengthener |
| Manganese (Mn) | 0.60 max | 0.50 max | 0.45 max | Deoxidizer |
| Phosphorus (P) | 0.10 max | 0.040 max | 0.030 max | Impurity |
| Sulfur (S) | 0.05 max | 0.040 max | 0.030 max | Impurity |
| Aluminum (Al) | 0.10 max (optional) | 0.05+ | 0.05+ | Killed steel |
| Nitrogen (N) | 0.01 max | 0.01 max | 0.01 max | Strain aging limit |
Lower carbon and phosphorus in SPCD/SPCE grades improves deep-drawing formability by reducing yield strength and allowing greater plastic deformation without fracture.
Mechanical Properties (Typical for 1.0 mm SPCC)
- Yield strength: 140-220 MPa (depends on temper mill reduction)
- Tensile strength: 270-410 MPa
- Elongation (50 mm): 32-42%
- Hardness (HRB): 50-75 (annealed) / 75-90 (full hard)
- r-value (plastic strain ratio, SPCE): 1.4-1.8 (indicates deep drawability)
- n-value (strain hardening exponent, SPCE): 0.20-0.24
SPCC is available in three surface conditions: full hard (no annealing, for simple bending only), 1/8 hard, 1/4 hard, 1/2 hard, and annealed (softest, best for drawing). Most general applications use the annealed condition with 1.0-1.5% temper mill reduction for optimal formability and surface quality.
Manufacturing Standards & Equivalents
| Region | Standard | Equivalent Grade |
|---|---|---|
| Japan | JIS G3141 | SPCC / SPCD / SPCE |
| China | GB/T 5213 | DC01 / DC03 / DC04 (cold-rolled low-carbon) |
| Europe | EN 10130 | DC01 / DC03 / DC04 |
| USA | ASTM A1008 | CS Type B / DS Type B / DDS Type B |
| Korea | KS D3501 | SPCC / SPCD / SPCE |
Chinese DC01 and SPCC are essentially interchangeable. For export, we typically supply material dual-certified to JIS G3141 SPCC and EN 10130 DC01 to satisfy both Asian and European customers.
Common Applications
- Appliance cabinets and panels: Refrigerator cases, washing machine tubs, microwave ovens, air conditioner housings
- Automotive parts: Oil pans, dashboards, brackets, seat frames, body reinforcement panels (SPCD/SPCE)
- Furniture and shelving: Office furniture, storage shelving, file cabinets
- Construction accessories: Ductwork, light gauge studs, ceiling grid, HVAC components
- Electrical enclosures: Distribution boxes, control cabinets, switchgear panels
- Light-gauge forming: Roll-formed sections, edge-bent panels, drawn components
- Packaging: Steel pails, drums, containers (when tinplate coating is not required)
Quality Assurance & Mill Test Certificate
Every coil shipment is supplied with comprehensive quality documentation:
- EN 10204 3.1 Mill Test Certificate with heat analysis, mechanical properties, and surface condition
- JIS G3141 compliance statement for SPCC grade
- Dimensional inspection report for thickness, width, and coil dimensions
- Surface roughness measurement (Ra value, typically 0.6-1.5 µm for bright finish)
- Yield, tensile, elongation, hardness per ASTM A370 / JIS Z2241
- Flatness report per JIS G3141 (I-units, typically ≤ 6 mm for annealed SPCC)
Mill capability certificates (ISO 9001, IATF 16949 for automotive customers, ISO 14001) are available on request. Most of our partner mills are automotive-approved and can supply SPCD/SPCE to Tier 1 automotive customers.
Packaging & Shipping
SPCC coil is shipped in standard container or bulk vessel depending on quantity:
- Eye-to-side (vertical) coils: Loaded on wooden or steel cradles, 1-2 coils per 20ft container
- Eye-to-horizon (horizontal) coils: Loaded on wooden bearers, suitable for slitting line direct feed
- Slit coil: Multiple narrower coils per master coil, custom ID/OD, vertical or horizontal
- Standard container loading: Max 20-25 tons per 20ft container, 25-27 tons per 40ft container
Surface protection: VCI paper or film wrapping, edge protectors, and desiccant bags in moisture-barrier packaging. Lead time: 15-30 days for standard sizes, 30-45 days for special hardness or surface treatment.
Why Choose Huaxia-Steel for SPCC Cold Rolled Coil?
- Mill-direct pricing: 8-15% lower than local service centers in most regions
- Multiple grade options: SPCC, SPCD, SPCE in annealed, 1/4 hard, 1/2 hard, full hard
- Wide dimensional range: 0.20-3.00 mm thickness, 600-1,500 mm width
- Slitting service: Custom slit coil width down to 30 mm minimum
- Quality assurance: JIS G3141 + EN 10130 dual certification, full 3.1 MTC
- Global export experience: Shipped to 60+ countries with full export documentation
Get a quotation: Send your grade, thickness, width, coil weight, quantity, and delivery port to our sales team. We will respond with a competitive FOB/CIF price within 24 hours.
