“HR or CR?” is one of the first questions a buyer has to answer when sourcing steel coil, and getting it wrong can mean a part that doesn’t form cleanly, a surface that doesn’t finish well, or a specification that costs more than the job needs. Hot-rolled (HR) and cold-rolled (CR, also called CRCA — Cold Rolled Close Annealed) coils start from the same slab but go through different mills, and that difference shows up in thickness, surface, accuracy and price. Here is how to tell them apart and pick the right one for your application.
What Is Hot-Rolled (HR) Steel Coil?
Hot-rolled coil is produced by rolling a steel slab at temperatures above 1,700°F (about 925°C), well above the metal’s recrystallization point. Rolling it hot lets the mill reduce thickness quickly and cheaply, but the coil cools and shrinks unevenly afterwards, leaving a slightly rough, scaled surface and looser dimensional tolerances than cold-rolled material. In India, HR coil is typically supplied to IS 2062 (grades E165, E250, E350 and higher), the standard structural steel specification, and is available in thicker gauges — generally from about 1.6 mm up to 12 mm and beyond in plate form.
What Is Cold-Rolled (CR / CRCA) Steel Coil?
Cold-rolled coil starts life as HR coil that is further rolled at room temperature after pickling (acid-cleaning) off the scale. Rolling cold work-hardens the steel, so it is annealed afterwards to restore ductility — hence “CRCA.” The result is a thinner, smoother, tighter-tolerance product that is easier to form, weld and finish. CR coil in India is generally supplied to IS 513, which defines four grades by how much forming the material needs to survive: CQ (Commercial Quality, general use), DQ (Drawing Quality, moderate forming), DDQ (Deep Drawing Quality, sharp bends and draws) and EDDQ (Extra Deep Drawing Quality, the most demanding draws such as automotive panels). Typical thickness runs from about 0.3 mm up to 3 mm.
HR vs CR Coils: Key Differences at a Glance
| Property | Hot-Rolled (HR) | Cold-Rolled (CR / CRCA) |
|---|---|---|
| Process | Rolled above ~925°C | Rolled at room temperature, then annealed |
| Surface finish | Scaled, slightly rough, dull grey | Smooth, clean, better paint/plating base |
| Dimensional accuracy | Looser tolerance, some camber/waviness | Tight tolerance, flatter |
| Typical thickness | ~1.6 mm – 12 mm+ | ~0.3 mm – 3 mm |
| Governing standard | IS 2062 (E165–E450) | IS 513 (CQ / DQ / DDQ / EDDQ) |
| Formability | Moderate | Good to excellent (DDQ/EDDQ) |
| Relative cost | Lower | Higher (extra processing) |
| Typical uses | Structural fabrication, chassis, heavy brackets, pipe/tube skelp | Automotive panels, white goods, furniture, precision enclosures |
Which Should You Choose?
The right choice usually comes down to what happens to the material after it leaves our yard:
- Structural or heavy fabrication (brackets, frames, chassis members, pipe and tube skelp) — HR coil to IS 2062 is the standard choice; the thicker gauges and lower cost suit load-bearing work where surface finish is not critical.
- Visible panels, enclosures and general fabrication — CR coil in CQ or DQ grade gives a cleaner finish and tighter tolerance without paying for deep-drawing performance you do not need.
- Sharp bends, draws or automotive-style pressings — DDQ or EDDQ grade CR coil is built specifically to survive aggressive forming without cracking or thinning out.
- Anything that will be painted, plated or shown as a finished surface — CR coil’s smoother surface is almost always the better base.
If you are unsure which grade a drawing actually needs, it usually helps to describe the forming operation — bend radius, draw depth, whether it is a one-off bend or a repeated deep draw — rather than just naming a grade; the right spec follows from that.
Grades We Stock
K. K. Steels stocks both HR coil (IS 2062) and CR/CRCA coil across CQ, DQ, DDQ and EDDQ grades (IS 513), along with slit coils cut to width from either. See our Steel Coils & Strips page for the full range, or the Steel Grade & Thickness Reference Guide for a side-by-side look at grades, gauges and standard thickness tolerances.
Still deciding between HR and CR for a specific job? Share your drawing or application with our team on WhatsApp at +91 99878 92312 or email info@kksteels.com, and we will help you land on the right grade and thickness before you place the order.
