SPCC black annealed cold-rolled full-hard steel coil is made of JIS G 3141 standard SPCC material. After cold rolling, it remains in a full-hard state (not annealed and softened). The surface retains a uniform black oxide film (not pickled), has high hardness and excellent dimensional accuracy, and is particularly suitable for precision processing fields that require high strength and flatness.
SPCC Full hard Cold Rolled Black Annealed Coil Technical Parameters：
|
Item |
parameter |
Test Standards |
|
Material Standard |
JIS G 3141 SPCC |
- |
|
Tensile Strength (Rm) |
540-690 MPa |
JIS Z 2241 |
|
Yield Strength (Rp0.2) |
430-580 MPa |
JIS Z 2241 |
|
Elongation (A50mm) |
3-8% |
JIS Z 2241 |
|
Hardness |
HRB 80-95 |
JIS Z 2245 |
|
Thickness Range |
0.3-3.0mm |
JIS G 3193 |
|
Roll Weight |
3-10 tons/roll |
- |
SPCC Full hard CRBA Coil Mechanical properties:
High strength and hardness: After cold rolling and annealing, SPCC full-hard steel coil has high yield strength and tensile strength. The yield strength can reach 270-410MPa, which can withstand large external forces and loads, and is suitable for occasions with high strength requirements.
Good toughness and ductility: Although it is in a full hard state, through a special annealing process, the steel coil still maintains a certain toughness and ductility. It is not easy to break during stamping, bending and other processing, and can meet the needs of complex forming.
SPCC Black Annealed CRFH Coil Advantages
✅ Excellent mechanical properties
Tensile strength: 540-690MPa (exceeding SPCC standard)
Yield strength: 430-580MPa
Hardness range: HRB 80-95
✅ Precision dimensional control
Thickness tolerance: ±0.03mm (≤1mm)
Width range: 600-1300mm (customizable slitting)
Straightness: ≤2mm/m
✅ High-quality surface condition
Surface roughness: Ra 0.8-1.6μm
Uniform oxide film: can be directly stamped or sprayed
✅ Japanese standard quality assurance
Strictly follow JIS G 3141 standard
Dimensional accuracy is 20% higher than similar domestic products
Quality Assurance
Strictly implement ISO9001 quality management system, and conduct strict quality control in every link from raw material procurement to product delivery.
Provide quality inspection report, including chemical composition, mechanical properties and other test data, to ensure that product quality meets standard requirements.
Packaging and logistics
Standard packaging:
Rust-proof paper + steel strapping (optional inner diameter 508/610mm)
PE protective cover added to the core
Export packaging:
Fully enclosed moisture-proof packaging (extra charge)
Labeling service (according to customer requirements)
About Us
GNEE Group strictly follows domestic and international trade practices, regards reputation as life, and provides all customers with the best quality products and the most complete services. The company has established a complete service system and technical support system, not only providing customers with the best quality products, but also providing complete after-sales service.
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