4140 Alloy Steel Round,is an cold drawn annealed steel of relatively high hardenability with its chromium content provides good hardness penetration,and the molybdenum imparts uniformity of hardness and high strength.4140 Alloy Steel Round responds well to heat-treatment and is relatively easy to machine in the annealed condition.4140 Alloy Steel RoundChina Factory Scm440 En19 4140 Forged Round Bar / AISI Typical applications for 4140 steel uses include:forged gears,spindles,fixtures,jigs,collars,Axles,conveyor parts,crow bars,logging parts,shafts,sprockets,studs,pinions,pump shafts,rams,and ring gears etc 6.Quality control 1.Melting Process EAF/BOF+LF+VD resulting in ingots 2.Both ends cut by saw 3.Ratio of forging:minimum 3:1 4.China Hot Rolled Forged 4340 Round Bar Alloy Steel - China Hot rolled forged 4340 round bar alloy steel Material 4140,42CrMo,15CrMo,EN19,etc Diameter 10mm~900mm Length 3m,6m,9m,12m or as requst Tolerance-0/+1.0 mm (dia),-0/+5.0 mm (length) Technique Cold/Hot rolled,Cold-Drawn or Hot Forged Test SGS/UT100%/Elements Testing Standard ASTM A516,A572,A285,A299,EN10025,DIN17100,17102,JIS G3101,G3106,GB/T700.Surface
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