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4140 Steel Round Bar M Ks 4140 steel round bar is a cold drawn annealed steel of relatively high hardenability due to its chromium content.It provides good hardness penetration,and the molybdenum imparts uniformity of hardness and high strength.4140 steel round bar responds well to heat-treatment and is relatively easy to machine in the 5/5Rod API X45 X60 X70 Hot Rolled Steel Coil-momamat Steel 8,900,000 TONS CAPACITY STEEL PLATE The thickness range of steel coil is from 1.2mm to 25.4mm, the thickness of steel plate can achieve to 700mm from 4.5mm, The supply capacity per year is about 8,900,000 tons steel plate/coil according to EN10025,EN10028,ASTM

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