|material:||alloy steel bar||Usage:||mechanical|
|Surface:||Balck or bright||Process:||EAF+LF+VOD+Forged+Heat Treatment(optional)|
|Inspection:||the third party is acceptable||Ultrasonic test:||According to SEP 1921-84|
34CrMo4/4137/35CrMo alloy steel bar hot forged steel bar for mechnical purpose, Dia: 110-1200mm
Statically and dynamically stressed components for vehicles, engines and machines - axles, turbine components, chains, forgings, Truck, turbine or rotor drive shafts, gearbox
gears, axles, half-shafts for rear axle stays. Shafts of all types, gears and any components
subject to fatigue stresses. etc.
Germany W.Nr. 1.7220/1.7224
Great Britain BS 708M32
USA: AISI 4135/4137
Russia GOST 35KHM/35KHML
France AFNOR 34CD4
Italy: UNI 35CrMo4
Sweden SS 2234
Finland SFS 25CrMo4
ISO 34CrMo4 /SCM 4
Chemical Composition (%):
Silicon 0.40 max
Sulphur 0.035 max
Process: EAF+LF+VD+Forged+Heat Treatment(optional)
Hot Forged: 80mm-1200mm
Black, Peeled(K12), Cold Drawn, Turned & Polished(H10, H11), Precision Ground(H9, H8)
Test: Ultrasonic test according to SEP 1921-84
Harden from a temperature of 830-890oC followed by oil or water quenching.
Tempering temperature: 540-680oC.
Certificate of Quality: issued in English, in addition the normal terms, production process, the mechanical property yield strength, tensile strength, elongation and hardness, forged ratio, UT test result, Grain size, heat treatment methods and the sample of is shown on the Certificate of Quality.
Marking: Heat No. will be cold stamped and Steel grade, diameter mm, length mm, and the manufacturer LOGO and weight kg is painted