GB/T700 Q235C mild steel hardness

The main difference between Q235B and Q235C steel is the chemical composition( Carbon maximum in Q235B is 0.20, in Q235C is 0.17; Phosphorus maximum in Q235B is 0.045, in Q235C is 0.040; Sulfur maximum in Q235B is 0.045, in Q235C is 0.040 ). For the Impact test, the temperature for GB/T700 Q235C is 0℃. If you are looking for Q235C mild steel plate or Q235C hardness, welcome feel free to contact us.
 
Q235 steel equivalent

ASTM	DIN 17100	JIS G3106	EN10025-2	GB/T700	ISO	JIS G3101
A283C A283D	RSt37-2 St37-2	SM400A	S235JR	Q235A Q235B	E235B Fe360B	SS400

Chemical composition (%)

Element	Grade Q235C
Carbon max.	0.17
Manganese max.	1.40
Phosphorus max.	0.040
Sulfur max.	0.040
Silicon max.	0.35

Mechanical properties

Grade	Yield strength MPa in different thickness(mm)						Tensile strength MPa
	≤16	16-40	40-60	60-100	100-150	>150
Q235C	235	225	215	205	195	185	375-500

 

Elongation % in different thickness(mm)
≤16	16-40	40-60	60-100	100-150	>150
26	25	24	23	22	21

 
For application, Q235C mild steel is mainly used for general construction such as bridge steel, high-voltage transmission tower, marine structures.