JIS G3113 is a Japanese material standard that defines the specifications of hot-rolled steel plates, sheets, and strips for automobile structural uses. SAPH440 is one of the grades in this standard, which is suitable for forming, bending, and drawing.
The mechanical properties of SAPH440 steel are shown in the table below. The main parameters are tensile strength, yield strength, elongation, and bending angle.
| Grade | SAPH440 | ||
| Tensile Strength(N/mm²) | ≥440 | ||
| Yield Strength (N/mm²) |
Thickness (mm) |
＜6.0 | ≥305 |
| 6.0~8.0 | ≥295 | ||
| 8.0~14.0 | ≥275 | ||
| Elongation % | Thickness (mm) |
1.6~2.0 | ≥29 |
| 2.0~2.5 | ≥30 | ||
| 2.5~3.15 | ≥32 | ||
| 3.15~4.0 | ≥33 | ||
| 4.0~6.3 | ≥34 | ||
| 6.3~14 | ≥35 | ||
| Bending Inside radius | Thickness (mm) |
＜2.0 | 1.0 times of thickness |
| ≥2.0 | 1.5 times of thickness | ||
| Bending angle | 180° | ||
SAPH440 is a structural hot-rolled steel that has excellent press drawability and high tensile strength. It is widely used in the automotive industry for various structural parts. SAPH440 steel is a reliable and durable material that meets the requirements of JIS G3113 standard.
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