Comparison of Cold Rolled Steel Grades

In metalworking, rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness and to make the thickness uniform. The concept is similar to the rolling of dough. Rolling is classified according to the temperature of the metal rolled. If the temperature of the metal is above its recrystallization temperature, then the process is known as hot rolling.
Typical uses for cold-rolled steel include metal furniture, desks, filing cabinets, tables, chairs, motorcycle exhaust pipes, computer cabinets and hardware, home appliances and components, shelving, lighting fixtures, hinges, tubing, steel drums, lawn mowers, electronic cabinetry, water heaters, metal containers, and a variety of construction-related products.

There are three different grades for cold rolled steel in China:Q195,Q215 and Q235.

Cold Rolled Steel:

Quality	GB/T 11253-2007 GB/T 5213-2001	JIS G3141-2005 JIS G3101-2004	EN 10130-2006 EN 10139-1998 DIN 1623-1986	ASTM A1008 / A1008M-05
Commercial Steel	Q195	SPCC (T)	DC01/ ST12	CS TYPE A/B/C
Drawing Steel	SC1 SC2 SC3	SPCD	DC03/ ST13	DS TYPE A/B
Deep Drawing Steel		SPCE	DC04/ ST14	DDS

For Chemical Composition & Mechanical Properties of Cold Rolled China Steel refer to the table:

	Chemical Composition %					Mechanical Properties
Steel Brand	C	Si	Mn	P	S	Elongation %	Yield Strength Mpa	Tensile Strength Mpa
Q195	0.06-0.12	<=0.30	0.25-0.50	<=0.045	<=0.050	>=33	>=195	315-430
Q215	0.09-0.15	<=0.30	0.25-0.55	<=0.045	<=0.050	>=31	>=215	335-450
Q235	0.14-0.22	<=0.30	0.30-0.65	<=0.045	<=0.050	>=26	>=235	375-500