Authentic Steel manufactures and exports prime Full Hard Cold Rolled Steel Coils (FH CRC), produced by direct cold reduction of pickled hot-rolled steel substrates without undergoing subsequent recrystallization annealing. Because the cold-working deformation energy remains stored within the crystalline matrix, full hard cold rolled steel exhibits maximum mechanical hardness, high tensile strength, and extremely high yield points.
Full hard cold rolled coils are the primary raw material input for continuous hot-dip galvanizing lines (HDGL), continuous color coating units, and specialized structural roll-forming operations. Engineered with exceptional thickness consistency and high surface cleanliness, FH CRC provides an ideal combination of structural rigidity and cost efficiency for post-processing steel mills and high-strength profiling manufacturers.
Hardness & Mechanical State: Unannealed Full Hard Condition, Hardness HRB 85 to HRB 95+, Rockwell B scale
Yield & Tensile Performance: Yield Strength > 550 MPa (Up to 750+ MPa depending on cold reduction ratio)
Thickness Gauge Range: 0.12 mm to 2.00 mm (High-precision cold reduction gauge tolerance)
Available Coated Widths: 600 mm, 752 mm, 914 mm, 1000 mm, 1200 mm, 1219 mm, 1250 mm, or slitted narrow full hard strips
Surface Roughness Options: Dull Matte Finish or Bright Smooth Surface
Oiling Condition: Light Anti-Rust Oiled, Medium Oiled, or Dry
Applicable International Standards: JIS G3141 SPCC-1D / SPCC-1B, ASTM A1008 Full Hard, EN 10130 Full Hard Grade
Substrate for Continuous Hot-Dip Galvanizing Lines: Serves as the primary feed material for galvanizing and galvalume steel mills equipped with inline continuous annealing furnaces.
High-Strength Corrugated Roof Profiles: Directly cold roll-formed into high-tensile corrugated roofing sheets, lightweight wall panels, and structural rib profiles where maximum deflection resistance is required.
Structural Tubes & Precision Hardware: Formed into high-rigidity structural steel tubing, highway guardrail backing components, and heavy-duty steel strapping bands.
Lightweight Structural Channels: Applied in structural C/Z purlin profiles and drywall steel framing systems requiring high strength-to-weight ratios.
High Yield Strength for Material Down-Gauging: The extreme yield strength allows engineers to reduce structural sheet thickness without sacrificing load-bearing capacity, reducing total steel tonnage and shipping costs.
Controlled Cold-Reduction Microstructure: Advanced tandem cold rolling mills ensure uniform work-hardening across the entire strip length, eliminating soft spots or gauge variation during roll-forming.
Export-Grade Seaworthy Packaging: Wrapped with VCI corrosion-inhibiting paper, PE moisture film, heavy galvanized steel drum shells, steel corner guards, and high-tensile strapping on wooden skids.
