34CrMo4/4137/35CrMo alloy steel bar hot forged steel bar for mechnical purpose, Dia: 110-1200mm

APPLICATIONS:

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.

RELATED SPECIFICATIONS:

Germany W.Nr. 1.7220/1.7224

DIN 34CrMo4

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 (%):

Carbon 0.30-0.37

Silicon 0.40 max

Manganese 0.60-0.90

Phosphorus 0.025max

Sulphur 0.035 max

Chromium 0.90-1.20

Molybdenum 0.15-0.30

34CrMo4/4137/35CrMo alloy steel bar

Process: EAF+LF+VD+Forged+Heat Treatment(optional)

SIZE RANGE:

Round:

Hot Forged: 80mm-1200mm

SURFACE FINISHES:

Black, Peeled(K12), Cold Drawn, Turned & Polished(H10, H11), Precision Ground(H9, H8)

Test: Ultrasonic test according to SEP 1921-84

Noramlizing
Temperature: 850-890oC.

Hardening
Harden from a temperature of 830-890oC followed by oil or water quenching.

Tempering
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

 We, Shanghai Unite Steel are committed to integrate engineering steel resources in china and serve the global engineering steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise.

In the aspect of resources and information, we have established cooperative and stronger relationship with nearly hundred enterprises, either state-owned or private owned in china, such as: DAYE Special Steel-a famous steel enterprise with the longest steelmaking history; BAO Steel, and Dongbei Special Steel Group-the biggest special steel manufacturer; TPCO, VALIN-largest seamless steel tube production enterprise; What's more, we have built long, deep and close business relationship with dozens of steel companies, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want!