Quenched & Tempered Alloyed Engineering Steel Grade
Steel AISI 4140
Thyssen 7225, DIN 42CrMo4, HQ 709, VCL140, JIS SCM 440
Sizes: 10mm – 400mm
Supplied Condition: Quenched & Tempered
It’s one kinds of high quality alloy structural steel.
Very common Quenched & Tempered alloyed engineering steel grade With high intensity, high hardenability. It has a small distortion afer quenching, a ghigh creep strength and lasting intensity afer processing of high tempreature.
Chemical composition: ( % )
C : 0.38-0.45,
Hardening Temp : 820 – 850 C
Ouenching Medium : Oil
Hardness as Supplied :
It’s mainly used for making various kinds of machinery, automobile, mining spare part, the gearwheel of the engine, the driving gear of supercharger, the abckshaft, the conncetingrob and the pinchock under the high pressure. Parts for power train applications, cold formed fastener components, shafts, gears, drill collars for the oil exploration, etc.