A514 Gr.Q steel plate is rack steel for construction machinery and jack-up offshore drilling platforms. A514 Gr.Q steel plate belongs to American standard alloy structural steel plate. The hardness of A514 Gr.Q steel plate is between 235-293 and the yield is greater than 690MPa. The tensile strength is between 760MPa-895MPa.
Chemical composition and melting analysis of A514 Gr.Q steel plate:
| C | Si | Mn | P | S | Ni | Cr | Mo | V |
| 0.14-0.21 | 0.15-0.35 | 0.95-1.3 | ≤0.03 | ≤0.03 | 1.2-1.5 | 1-1.5 | 0.4-0.6 | 0.03-0.08 |
Mechanical properties of A514 Gr.Q steel plate:
| Delivery Status | Thickness | Mechanical properties | |
| Quenched and tempered | ≤20mm | Rp0.2(MPa) | ≥690 |
| Rm(MPa) | 760-895 | ||
| A50(%) | ≥18 | ||
| Z(%) | ≥40 | ||
| HBW | 235-293 | ||
| >20-65mm | Rp0.2(MPa) | ≥690 | |
| Rm(MPa) | 760-895 | ||
| A50(%) | ≥18 | ||
| Z(%) | ≥40 | ||
| >20-65mm | Rp0.2(MPa) | ≥690 | |
| Rm(MPa) | 760-895 | ||
| A50(%) | ≥18 | ||
| Z(%) | ≥50 | ||
| >65-150mm | Rp0.2(MPa) | ≥620 | |
| Rm(MPa) | 690-895 | ||
| A50(%) | ≥16 | ||
| Z(%) | ≥50 | ||
A514 Gr.Q steel plate has the characteristics of high yield, high tensile strength, good notch toughness and corrosion resistance, and is often used in engineering automobile lifting gears, large excavators, offshore drilling platforms and other equipment's manufacture.
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