OTHER STANDARDS
We, Jonan Steel Corporation, manufacture high quality steel rods for reinforced concrete based on advanced technology and cutting-edge facilities.
Product display
Our products, manufactured with solid technique, have received worldwide acclaim, and have established its position as a trusted brand.
Deformed bar／
Roll mark
BSD16
※ BS-SPEC is available. (water-cooled control)
※ I examine it and it produces it if available and sells it to other standards.
Product standard list
We conduct inspections on our products to check many factors such as chemical composition, shape, dimension, mechanical property, etc. These are done under our strict quality control system, and enables us to manufacture high quality products.
Chemical composition (%)
| Standards | C | Si | Mn | P | S | Cu | N | Ceq(※) |
|---|---|---|---|---|---|---|---|---|
| BS:B500B(2005) | 0.22(0.24) |
－ | － | 0.050 (0.055) |
0.050 (0.055) |
0.80 (0.85) |
0.012 (0.014) |
0.50 (0.52) |
| BS:460B(1997) |
0.25(0.27) |
－ | － | 0.050 (0.055) |
0.050 (0.055) |
－ | 0.012 (0.013) |
0.51 (0.54) |
（※）Ceq = C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15
Mechanical properties
| Standards | Yield point | Tensile/Yield point ratio | Elongation | Elongation (at the time of the maximum stress) |
|---|---|---|---|---|
| BS:B500B(2005) | 500Mpa(650 max.) | 1.08 | － | 5.0% |
| BS:460B(1997) |
460N/mm2 | 1.08 | 14% | 5.0% |
Bending test
| Standards | Nominal diameter (mm) | Mandrel diameter |
|---|---|---|
| BS:B500B(2005) | 16min. | 4d |
| BS:460B(1997) |
16min. | 3d |
Nominal section area/Unit mass/Tolerance
| Standards | Nominal diameter (mm) | Nominal section area | Unit mass (Kg/m) | Tolerance |
|---|---|---|---|---|
| BS:B500B(2005) | 10 | 78.5mm | 0.617 | ±4.5% |
| 12 | 113mm | 0.888 | ||
| 16 | 201mm | 1.58 | ||
| BS:460B(1997) | 10 | 78.5mm | 0.616 | ±6.5% |
| 12 | 113.1mm | 0.888 | ±4.5% | |
| 16 | 201.1mm | 1.579 | ±4.5% |
Tolerances on length
| Standards | Allowance |
|---|---|
| BS:B500B(2005) | －0～+100mm |
| BS:460B(1997) | ±25mm |