 
				| 
					Country
				 |  |  | 
					                 Mechnical properties
				 | ||
| 
					Yield Str.(Mpa)
				 | 
					Tensile Str.
					 
						(Mpa)
					 | 
					Elongation(%)
				 | |||
| 
						United kingdom
					 | 
					BS4449//Coil
				 | 
					GR250 | 
					250
				 | 
					295
				 | 
					22
				 | 
| 
					BS4449:2004 | 
					GR460B
				 | 
					460
				 | 
					500
				 | 
					15
				 | |
| 
					BS4449:2005 | 
					B500B
				 | 
					500
				 | 
					540
				 | 
					5
				 | |
| 
						Korea
					 | 
						KS D 3504
					 | 
					SD 400 | 
					400
				 | 
					450
				 | 
					16
				 | 
| 
					SD 500 | 
					500
				 | 
					620
				 | 
					12
				 | ||
| 
						United States
					 | 
					ASTM | 
					GR 40 | 
					280
				 | 
					420
				 | 
					12
				 | 
| 
					A615/04a | 
					GR 60 | 
					420
				 | 
					620
				 | 
					9
				 | |
| 
					A615M/04a | 
					GR 75 | 
					520
				 | 
					690
				 | 
					7
				 | |
| 
						China
					 | 
						GB1499.2-2007
					 | 
					HRB400/400E | 
					400
				 | 
					540
				 | 
					17
				 | 
| 
					HRB500
				 | 
					500
				 | 
					630
				 | 
					16
				 | ||
GB/BS Deformed Steel Bar
| Diameter(mm) | Sectionarea(mm2) | Weight(kg/m) | 
| 6 | 28.27 | 0.222 | 
| 8 | 50.27 | 0.395 | 
| 10 | 78.54 | 0.617 | 
| 12 | 113.1 | 0.888 | 
| 14 | 153.9 | 1.21 | 
| 16 | 201.1 | 1.58 | 
| 18 | 254.5 | 2.00 | 
| 20 | 314.2 | 2.47 | 
| 22 | 380.1 | 2.98 | 
| 25 | 490.9 | 3.85 | 
| 28 | 615.8 | 4.83 | 
| 32 | 804.2 | 6.31 |