SPCC (JIS G3141) and DC01 (EN 10130) are equivalent commercial-grade cold-rolled low-carbon steels with nearly identical chemical, mechanical properties and general formability. The core distinctions lie in standard origins, subtle specification tolerances, surface finish conventions, and regional application preferences-SPCC dominates Asian markets, while DC01 is preferred in Europe. Both are interchangeable for most general forming, bending, and coating applications.
1. Standard & Grade Definition
SPCC Cold-Rolled Steel
Standard: JIS G3141 (Japanese Industrial Standard)
Full name: Steel Plate Cold Commercial
Category: Commercial-quality, general-purpose cold-rolled carbon steel sheet/strip
Typical subgrades: SPCC-SD (dull matte finish), SPCC-SB (bright finish)
DC01 Cold-Rolled Steel
Standard: EN 10130 (European Standard)
Former equivalent: St12 (old DIN 1623-1 standard)
Category: Cold-rolled low-carbon steel sheet for non-alloy quality, general forming
Surface finish: Uniform smooth finish (standard EN surface designation)
2. Chemical Composition Comparison (Max %, JIS/EN Standard)
|
Grade
|
C
|
Mn
|
P
|
S
|
Si
|
Alt (Aluminum)
|
|---|---|---|---|---|---|---|
|
SPCC (JIS G3141)
|
≤0.15
|
≤0.60
|
≤0.050
|
≤0.050
|
≤0.05
|
-
|
|
DC01 (EN 10130)
|
≤0.12
|
≤0.60
|
≤0.045
|
≤0.045
|
-
|
≥0.020
|
|
Difference
|
Slightly stricter C limit
|
Identical
|
Stricter impurity control
|
Stricter impurity control
|
Trace only
|
Required for killing
|
Key note: DC01 enforces tighter impurity (P/S) and carbon limits, plus mandatory aluminum content for non-aging performance-while SPCC allows marginally wider compositional ranges.
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3. Mechanical Properties (Annealed Condition, Room Temperature)
|
Property
|
SPCC (JIS G3141)
|
DC01 (EN 10130)
|
Significance
|
|---|---|---|---|
|
Tensile Strength (MPa)
|
≥270
|
270–380
|
Similar strength range for general fabrication
|
|
Yield Strength (MPa)
|
140–280
|
130–280
|
DC01 has slightly lower min yield for easier forming
|
|
Elongation (A50, %)
|
≥34
|
≥28
|
SPCC shows higher ductility in standard test specs
|
|
Hardness (HRB)
|
50–85
|
52–88
|
Near-identical hardness for processing compatibility
|
|
Bending Performance
|
180° bend, no crack
|
180° bend, no crack
|
Equal bending performance for general applications
|
4. SPCC-SD vs DC01 Surface Roughness Specification
|
Grade
|
Surface Finish
|
Ra (μm)
|
Rz (μm)
|
Coating Adhesion
|
|---|---|---|---|---|
|
SPCC-SD
|
Dull (matte), non-reflective
|
0.8–1.6
|
6.3–12.5
|
Excellent for painting/powder coating
|
|
DC01
|
Smooth uniform (standard EN)
|
0.6–1.2
|
5.0–10.0
|
Excellent for plating/coating
|
Difference: SPCC-SD features a matte textured finish optimized for paint adhesion; DC01 offers a smoother, tighter-tolerance surface preferred for precision electroplating and European coating lines.
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5. Core Advantages Comparison
Advantages of SPCC Cold-Rolled Steel
Cost-effective: Wider production tolerances deliver lower material cost
Asian market standard: JIS specification widely accepted in Asia, Middle East, Africa
Flexible finishes: SD (dull) / SB (bright) options for varied surface needs
Adequate formability: Ideal for general stamping, bending, shallow drawing
Advantages of DC01 Cold-Rolled Steel
Tighter quality control: Stricter EN standards for consistent batch performance
Non-aging property: Aluminum addition prevents age hardening during storage
European compliance: Certified for EU automotive, appliance, and construction codes
Superior surface consistency: Smoother finish for high-precision coating applications
6. Common Applications (Interchangeable vs Preferred)
Both SPCC & DC01 Suit
Home appliance shells (refrigerator, washer, air conditioner panels)
Metal furniture frames & cabinets
Electrical enclosures & junction boxes
General hardware & stamped components
Base material for galvanized (GI/EG) and color-coated (PPGI) steel
SPCC Preferred For
Asian market manufacturing
General industrial fabrication prioritizing cost efficiency
Products requiring matte finish (SPCC-SD) for painting
DC01 Preferred For
European automotive interior/exterior parts
Precision electroplated components
EU-regulated appliances & construction materials
High-surface-quality deep drawing parts
Home appliance shells
Industrial equipment
Automotive Applications
GNEE Partners
Case Studies
7. Frequently Asked Questions (FAQ)
1. Are SPCC and DC01 fully interchangeable?
Yes for most general forming, bending, welding, and coating applications. Substitution is standard in global trade-only verify customer-specified standards (JIS vs EN) for compliance.
2. Which grade has better formability?
Nearly identical for simple/medium forming. DC01's tighter chemistry may offer marginal benefits for complex shapes; SPCC meets JIS formability standards for commercial use.
3. What is the difference between SPCC-SD and DC01 surface finishes?
SPCC-SD is a dull matte finish (Ra 0.8–1.6μm) for superior paint adhesion. DC01 has a smoother uniform finish (Ra 0.6–1.2μm) ideal for precision plating and high-gloss coatings.
4. Which grade is more cost-effective?
SPCC typically offers better pricing due to JIS tolerance flexibility. DC01's tighter EN specifications carry a slight cost premium for consistent quality.
5. Do SPCC and DC01 have good weldability?
Yes-both are low-carbon steels (≤0.15% C) with excellent weldability via MIG, TIG, resistance, and laser welding without preheating.
6. What thickness/width ranges are available?
Both: Thickness 0.3–3.5mm, Width 600–1500mm, supplied in coils, sheets, or cut-to-length plates. Custom sizes available per request.
7. Which grade is better for deep drawing?
For severe deep drawing, choose SPCE (JIS) or DC04 (EN)-not SPCC/DC01. Both SPCC/DC01 work for shallow to medium drawing applications.
8. Which grade should I choose for export?
SPCC: Export to Asia, Middle East, Africa (JIS standard preference)
DC01: Export to Europe (EN 10130 compliance required)