In the dynamic world of automobiles, where speed meets safety and power dances with precision, every component plays a critical role. Yet, none is more crucial than the hidden guardian, the steel skeleton that forms the backbone of a car's strength and resilience: JIS G3113 SAPH400. Today, we unveil the secrets of this unsung hero, exploring its chemical composition, mechanical properties, and why it reigns supreme as the king of automotive structural steel.
Yield Strength: 400 MPa (minimum) - This represents the point where the steel begins to deform permanently. With its exceptional yield strength, SAPH400 provides unmatched resistance to bending and twisting, contributing to unparalleled crashworthiness and structural integrity.
Elongation %: 20% (minimum) - This measures the steel's ability to stretch before breaking, allowing for fabrication and shaping of intricate components without compromising strength.
Bending: Excellent bendability makes JIS G3113 SAPH400 ideal for shaping complex car parts like chassis components and door panels, enabling creative design freedom with confidence.
| Grade | SAPH400 | ||
| Tensile Strength(N/mm²) | ≥400 | ||
| Yield Strength (N/mm²) |
Thickness (mm) |
＜6.0 | ≥255 |
| 6.0~8.0 | ≥235 | ||
| 8.0~14.0 | ≥235 | ||
| Elongation % | Thickness (mm) |
1.6~2.0 | ≥31 |
| 2.0~2.5 | ≥32 | ||
| 2.5~3.15 | ≥34 | ||
| 3.15~4.0 | ≥35 | ||
| 4.0~6.3 | ≥36 | ||
| 6.3~14 | ≥37 | ||
| Bending Inside radius | Thickness (mm) |
＜2.0 | 1.0 times of thickness |
| ≥2.0 | 1.0 times of thickness | ||
| Bending angle | 180° | ||
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