Cold Rolled Coil Full Hard (CRFH)

Cold Rolled Coil Full Hard is an unannealed flat steel product produced by cold-reducing pickled hot rolled coils directly to target gauges without subsequent recrystallization annealing or temper rolling. Because it retains full strain-hardening, it exhibits high yield strength (Rm ≥ 550 MPa), surface hardness (Rockwell B 85+), and stiffness, along with tight gauge uniformity. Supplied in grades IS 513 CRFH, and JIS G3141 SPCC-1FH, with thicknesses from 0.14 mm to 2.0 mm and widths up to 1,500 mm in light-oiled or dry finishes. Common mill sources include JSW Steel, AM/NS India, Tata Steel, and POSCO.