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NA 8634 Algeria, Reabr, Steel for the reinforcement of concrete - standard dimensions, weight and properties

NA 8634 Algeria, Reabr, Steel for the reinforcement of concrete - standard dimensions, weight and properties

NA 8634 Algeria standard, properties, dimensions, mechanical characteristic chemical composition, weight, tolerance.

Table - standard dimensions and characteristic

Nominal dimensions		Nominal weight (mass) per unit of length, kg/m	Tolerance, %
Diameter, mm	Cross-section area, mm2
6	28,3	0,222	± 8%
8	50,3	0,395	± 8%
10	78,3	0,617	± 5%
12	113	0,888	± 5%
14	154	1,21	± 5%
16	201	1,58	± 5%
20	314	2,47	± 5%
25	491	3,85	± 4%
32	804	6,31	± 4%
40	1256	9,86	± 4%

Table - Mechanical properties, characteristic

Strength grade	Yield strength, Re, N/mm2	Tensile strength, Rm, N/mm2	Ratio, Rm / Re	Elongation As,%	Elongation Agt,%
RB 400	400	440	1,10	14	2,5
RB 400 W	400	440	1,10	14	2,5
RB 500	500	550	1,10	14	2,5
RB 500 W	500	550	1,10	14	2,5

Table - Chemical composition

Steel Grade	Co	SI	Mn	P	S	N21	Ceq
RB 400				0,06	0,06
RB 500				-0,07	-0,7
RB 400 W	0,22	0,6	1,6	0,05	0,05	0,012	0,5
RB 500 W	-0,24	-0,65	-1,7	-0,055	-0,055	-0,013	-0,52

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