aisi 4340QT Bar esupplier

4340 is a 1.8% nickel – chromium – molybdenum high hardenability high tensile steel –

Full Load of 20Mt aisi4340qt export to Dubai.

DIN AISI JIS Chemical Composition
C Si Mn P S Co Cr Mo Ni V W Cu
40NiCr4Mo6 4340H SCM 439H 0.37 to 0.44 0.15 to 0.35 0.55 to 0.90 < 0.04 < 0.03 0.65 to 0.95 0.20 to 0.30 1.55 to 2.00 < 0.35