deformed steel bar:mechanical properties norm amount to 500-970 Mpa,use anti-seismic and economical materials,beautiful appearan

deformed steel bar:mechanical properties norm amount to 500-970 Mpa,use anti-seismic and economical materials,beautiful appearan.

CHEMICAL COMPOSITION AND PHYSICAL PROPERTY
mark	chemical composition						physical property
	C	Si	Mn	V,Ti	S	P	tensile strength(Mpa)	yield strength(Mpa)	elasticity%
CRB550	0.09-0.15	≤0.30	0.25-0.55		≤0.050	≤0.045	550	500	8
CRB650	0.14-0.22	≤0.30	0.30-0.65		≤0.050	≤0.045	650	585	4
CRB800	0.19-0.27/0.17-0.25	0.17-0.37/0.40-0.80	1.20-1.60	Ti 0.01-0.05	≤0.045	≤0.045	800	720	4
CRB970	0.37-0.45/0.57-0.65	0.60-1.10/0.17-0.37	1.00-1.40/0.50-0.80		≤0.045/≤0.035	≤0.045/≤0.035	970	875	4

SIZEWEITHT AND ERRORS EXCEPTED OF REBAR
diametermm	cross-sectional area(mm)	weight
		theoretical weight(kg/m)	error excepted %
4	12.6	0.099	±4
4.5	15.9	0.125
5	19.6	0.154
5.5	23.7	0.186
6	28.3	0.222
6.5	33.2	0.261
7	38.5	0.302
7.5	44.2	0.347
8	50.3	0.395
8.5	56.7	0.445
9	63.6	0.499
9.5	70.8	0.556
10	78.5	0.617
10.5	86.5	0.679
11	95	0.746
11.5	103.8	0.813
12	113.1	0.888

deformed steel bar