Why is HR sheet cheaper than CRCA?

It skips cold rolling and annealing, so it costs less but has a rougher surface and looser thickness.

Can HR sheet be powder coated?

Yes, after the scale is removed by shot blasting or pickling, or by using HRPO.

Is HR plate the same as IS 2062?

Structural plate is usually bought to IS 2062; IS 1079 covers hot rolled sheet and strip for forming.

HR sheet IS 1079: hot rolled steel sheet, HRPO, uses

HR sheet is steel sheet made by rolling hot, made in India to IS 1079. It is cheaper than cold rolled (CRCA) sheet but has a dark scaled surface and looser thickness tolerance. Pickled and oiled sheet (HRPO) has the scale removed for painting and pressing. HR sheet is used for chassis parts, brackets, tanks, structures and fabricated parts, usually from about 1.6 mm (0.0630 inch) thick upward.

Quick facts

Standard: IS 1079
Thickness: About 1.6–8 mm (0.0630–0.315 inch) common for sheet; thicker as plate
Surface: Mill scale (HR) or clean (HRPO)
Grades: Commercial, drawing and deep drawing qualities (HR1–HR5)
Cost: Lower than CRCA
Forms: Coils, sheets cut to length

HR, HRPO or CRCA?

	HR	HRPO	CRCA
Surface	Dark scale	Clean, oiled	Smooth, bright
Thickness tolerance	Looser	Looser	Tight
Typical thickness	1.6 mm (0.0630 inch) and above	1.6 mm (0.0630 inch) and above	About 0.4–3 mm (0.0157–0.118 inch)
Painting	Needs blasting or pickling	Good	Very good
Cost	Lowest	Medium	Higher

Typical uses

Chassis and frame parts
Brackets, base plates and machine guards
Tanks and containers
Pressed and bent parts where finish is less important

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Questions

Why is HR sheet cheaper than CRCA?: It skips cold rolling and annealing, so it costs less but has a rougher surface and looser thickness.
Can HR sheet be powder coated?: Yes, after the scale is removed by shot blasting or pickling, or by using HRPO.
Is HR plate the same as IS 2062?: Structural plate is usually bought to IS 2062; IS 1079 covers hot rolled sheet and strip for forming.

The figures on this page are typical values for guidance, written by Diemeco from standard engineering practice. They are not a specification: confirm grades and properties with the relevant standard or the supplier's mill test certificate, and tolerances with your workshop. Last checked 29 October 2026.