SD490
Japanese deformed bar: yield 490–625 MPa, tensile ≥ 620 MPa, yield ratio ≤ 80 %.
- Yield strength ReH
- 490–625 MPa1guaranteed range
- Tensile strength Rm
- ≥ 620 MPa1guaranteed minimum
- Yield-to-tensile ratio Fy/Fu
- ≤ 0.8 1guaranteed maximum
- Elongation after fracture A
- ≥ 12 %1guaranteed minimum · test piece similar to No. 2
How we know these values · 9 values from 1 source
- Single source
- 9
- Click any value under “All values” to see the sources that state it, with dates.
- How we rate evidence
What to watch
- Not yet sourced: Elongation for bars above D25 (No. 14A test piece).
All values
- Identity and composition 5
- Mechanical 4
- Design values not yet
- Physical not yet
- Thermal not yet
- Fire not yet
- Chemical and durability not yet
Mechanical
Strength
Yield strength ReH
Upper yield strength guaranteed by the product standard (minimum).
| Condition | Value | Evidence |
|---|---|---|
| 490–625MPa | Single source |
Tensile strength Rm
Ultimate tensile strength. Product standards give a range or a minimum.
| Condition | Value | Evidence |
|---|---|---|
| ≥ 620MPa | Single source |
Ductility
Elongation after fracture A
Minimum elongation; depends on gauge length and test direction.
| Condition | Value | Evidence |
|---|---|---|
| ≥ 12% | Single source |
Yield-to-tensile ratio Fy/Fu
Capped in seismic grades (A992: 0.85) so members can yield before they break.
| Condition | Value | Evidence |
|---|---|---|
| ≤ 0.8 | Single source |
Chemical composition
Show on the periodic tableMax, %
| Element | Applies to | Max % | Evidence |
|---|---|---|---|
| C | all thicknesses | 0.32 | Single source |
| Si | all thicknesses | 0.55 | Single source |
| Mn | all thicknesses | 1.80 | Single source |
| P | all thicknesses | 0.040 | Single source |
| S | all thicknesses | 0.040 | Single source |
Carbon equivalent Ceq = C + Mn/6 + Si/24 + Ni/40 + Cr/5 + Mo/4 + V/14 ≤ 0.7.
Compare side by side
With any other gradeSources here are public pages that reproduce JIS G 3112. For design and acceptance, the standard edition named in your specification and the inspection certificate (EN 10204 3.1) of the delivered product take precedence. Design factors are recommended values; your National Annex may set others.