BS550MCK4,BS550MCK4 steel,BS550MCK4 steel plate/sheet

BS550MCK4 hot rolling carbon low-alloy high strength steel design by reducing the carbon equivalent of the steel and welding crack sensitivity index, and use of advanced smelting equipment and technology to strengthen the collection of micro-alloying technology, good weldability.

Good Weldability --- carbon equivalent(Ceq) and weld crack sensitivity index(Pcm)

Grade	Performance carbon content C（%）	Performance carbon content Ceq	Welding sensitivity index performance Pcm
BS550MCK4	≤0.08	≤0.49	≤0.22

Ceq = C + Mn/6 (Cu + Ni)/15 + (Cr + Mo + V)/5

Pcm =C + Si/30 + (Mn + Cu + Cr)/20 + Ni/60 + Mo/15 + V/10 + 5B

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