GB/T 4171 Q550NH china supplier low price steel plate

    Weathering steel Q550NH owned yield strength above 550 Mpa and tensile strength within 620-780 Mpa.

    For improving steel properties, he following alloy elements can be added choose, b 0.015-0.060%,  0.02-0.12%,Ti 0.02-0.10%,Alt min.0.020%.Nb+V+Ti max.0.22%.

    Main chemical elements composition of Q550NH:

    Main chemical elements composition of Q550NH

    C

    Si

    Mn

    P

    S

    Cu

    Ni

    Cr

    0.16

    0.65

    2.00

    0.025

    0.030

    0.20-0.55

    0.12-0.65

    0.30-1.25

    Mechanical property for Q550NH steel:

    Thickness (mm)

    Q550NH

    ≤ 16

    > 16 ≤ 40

    > 40 ≤ 60

    >60

    Yield strength (≥Mpa)

    550

    540

    530

    530

    Tensile strength (Mpa)

    620-780

    GB/T 4171 Q550NH steel has the high quality steel toughness, plastic drawing, forming, welding, abrasion, high temperature, fatigue resistance and so on.

    GB/T 4171 Q550NH Steel Plate is used in Vehicle, Bridge, Tower, container And So On.

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