YS STEEL offers a broad range of Cold Rolled Steel Coils specifications. The standard production range covers most industrial applications, while custom dimensions and properties can be arranged based on project requirements.
| Parameter | Standard Range | YS STEEL Custom Capability |
|---|---|---|
| Thickness | 0.30 mm – 3.50 mm | 0.15 mm – 4.00 mm |
| Width | 600 mm – 1,500 mm | 500 mm – 1,800 mm |
| Coil ID | 508 mm / 610 mm | Custom upon request |
| Coil Weight | 3 MT – 15 MT | Up to 25 MT per coil |
| Surface Roughness (Ra) | 0.4 μm – 1.6 μm | 0.2 μm – 2.0 μm |
| Tensile Strength | 270 MPa – 410 MPa (annealed) | Up to 700 MPa (full hard) |
| Elongation | 28% – 45% (annealed) | Varies by grade and temper |
| Yield Strength | 140 MPa – 320 MPa | Custom specs available |
| Hardness | HRB 30 – HRB 70 (annealed) | HRB 70 – HRC 35 (full hard) |
| Edge Condition | Mill edge / Slit edge | Deburred, rounded, or square |
| Grade | Standard | C max | Mn max | P max | S max |
|---|---|---|---|---|---|
| SPCC | JIS G3141 | 0.15 | 0.60 | 0.050 | 0.050 |
| SPCD | JIS G3141 | 0.10 | 0.45 | 0.035 | 0.035 |
| SPCE | JIS G3141 | 0.08 | 0.40 | 0.030 | 0.030 |
| DC01 | EN 10130 | 0.12 | 0.60 | 0.045 | 0.045 |
| DC04 | EN 10130 | 0.08 | 0.40 | 0.030 | 0.030 |
| A1008 CS Type B | ASTM A1008 | 0.08 | 0.60 | 0.035 | 0.035 |
YS STEEL sources high-quality hot rolled substrate from certified mills and processes it through precision cold reduction mills. The cold rolling process improves thickness tolerance, surface finish, and mechanical properties. After rolling, the strip undergoes annealing to restore ductility, followed by skin passing or temper rolling to achieve the required surface texture and flatness.
Each coil passes through automated inspection systems that measure thickness, width, surface defects, and flatness. YS STEEL also performs laboratory testing for tensile strength, hardness, elongation, and chemical composition. Material certificates are issued with every shipment. For surface-critical applications, additional inspections are carried out under controlled lighting to detect pits, scratches, roll marks, and other defects.
Cold rolled steel coil is used in industries that require high surface finish and precise dimensions. Typical applications include:
In automotive manufacturing, cold rolled steel coil is favored for its ability to achieve class-A surface finishes after painting. Appliance manufacturers rely on its consistent gauge and flatness for automated stamping lines. The construction sector uses cold rolled steel coil for visible architectural panels where surface quality is critical.
YS STEEL offers bright, matte, and dull finishes depending on the temper rolling process. Surface protection options include dry, oiled, phosphatized, or passivated finishes. Oiling is the most common method to prevent rust during storage and transit. The surface roughness value can be controlled between Ra 0.2 μm and Ra 2.0 μm based on customer requirements. For deep drawing applications, a smoother surface is often specified to improve formability and paint adhesion.
YS STEEL adheres to international standards such as ASTM A568, EN 10131, and JIS G3141 for dimensional tolerances. Standard thickness tolerance is typically ±0.05 mm for thicknesses up to 1.5 mm, but tighter tolerances of ±0.01 mm can be supplied for precision applications. Width tolerance is normally ±2 mm for mill edge and ±0.5 mm for slit edge. Flatness and crown values are also controlled according to application needs.
Each coil is wrapped with anti-rust paper or VCI film, then covered with plastic sheet and steel strapping. Edge protectors are placed around the coil circumference. Coils are typically loaded on wooden pallets or steel cradles and secured in containers with wooden blocking. For ocean freight, desiccant bags are added to control moisture. YS STEEL can customize packaging for special handling requirements, including eye-to-sky loading or heavy-duty cradles for large coils.
YS STEEL supplies cold rolled steel coil according to ASTM A1008, EN 10130, JIS G3141, GB/T 5213, and ISO 3574. Common grades include SPCC, SPCD, SPCE, DC01, DC03, DC04, DC05, DC06, and A1008 CS Type A/B/C. High-strength and full-hard grades are also available. Mill test certificates are provided with each coil to verify chemical composition and mechanical properties.
Yes. YS STEEL operates slitting lines that can process Cold Rolled Steel Coils into narrow strips from 20 mm to 900 mm wide. Cut-to-length services are also available for sheet blanks. Custom coil inner diameter, outer diameter, and maximum coil weight can be arranged. This reduces material waste and improves production efficiency for downstream manufacturers.
The minimum order quantity depends on the grade, thickness, and width. For standard grades like SPCC or DC01, a trial order of 25 metric tons is usually accepted. For custom or high-strength grades, the minimum order may be 50 metric tons or one full container load. YS STEEL also maintains stock for popular specifications to support urgent or small-volume requirements.
