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Q690C steel plate
Q690C steel plate
Q690C steel plate
Q690C steel plate

Q690C steel plate

Steel plates made from Q690 material has high yield strength and tensile strength and is widely used in coal mine machinery and engineering machinery, such as hydraulic support, port cranes, flatbed trucks and so on.
Chemical Composition
Q690 Chemical Composition (%)
Steel Grade Quality Grade C Si Mn P S Nb V Ti Cr Ni Cu N Mo B Al
Q690 Q690C ≤ 0.18 ≤ 0.60 ≤ 2.00 ≤0.030 ≤0.030 ≤ 0.11 ≤ 0.12 ≤ 0.20 ≤ 1.00 ≤ 0.80 ≤ 0.80 ≤ 0.015 ≤ 0.30 ≤ 0.004 ≥ 0.015
Q690D ≤0.030 ≤0.025
Q690E ≤0.025 ≤0.020
Mechanical Property
    Q690 Yield Strength (≥N/mm2); Thickness or Dia. d (mm)
Standard Steel Grade Quality d≤16 16<d≤40 40<d≤63 63<d≤80
GB/T 1591 – 2008 Q690 C, D, E 690 670 660 640
GB/T 1591 – 2018 Q690M C, D, E 690 680 670 650
 
    Q690 Tensile Strength (N/mm2); d (mm) Elongation
Standard Steel Grade Quality d≤40 40<d≤63 63<d≤80 %
GB/T 1591 – 2008 Q690 C, D, E 770-940 750-920 730-900 ≥14
GB/T 1591 – 2018 Q690M C, D, E 770-940 750-920 730-900 ≥14
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