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AISI 1045 Steel Pipe

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  • Introduction

AISI 1045 Steel Pipe(CK45) Steel r is suitable for mean strained parts of higher dimensions (heavy forged parts) and complexed forms in vehicle manufacturing and machine engineering (e.g. ship shafts, transmission parts, wheel hubs). Lowest application temp. -25 °C, favorable creep behavior up to 480 °C.


  • Chemical composition and Mechanical properties Of AISI 1045 Steel Pipe(CK45) Steel

Chemical composition(%) of  AISI 1045 Steel Pipe(CK45) Steel
ElementCSiMnSP
Content0.42-0.500.400.50-0.800.02-0.040.035

 

Mechanical properties of  CK45 Steel

PerformanceTensile strength/MpaElongation /%Yield strength/Mpa
Proportion580-7704-8%330-640

  • Application

Used for most transmission and motor parts of medium strength. Case hardened parts such as camshafts, gears, rocking levers etc. Simple hand tools and various types of fasteners and fixtures, machinery parts and components with medium stress.


  • Other Analysis

Hardness:

Hardness, Rockwell C (Water quenched on 820-870°C, 5 minutes): 201~269HB

Heat treatment:
Heat Treatment of AISI 1045 (CK45) followed by furnace cooling at 50ºF (28ºC) per hour, to 1200ºF (650ºC) soaking and air cooling. Hardening of this grade is carried out from an austenitizing temperature of 1475-1550ºF (800-845ºC) and oil or water quenching.

Hardening:
Hardening of this grade is carried out from an austenitizing temperature of 1475-1550ºF (800-845ºC) and oil or water quenching.

Flame and induction hardening may be carried out by heating quickly to the desired case depth and quenching in water or oil. This should be followed by a tempering treatment at 300-400ºF (150-200ºC) to reduce stresses in the case without affecting its hardness. A surface hardness of Rc 58 may be obtained by this treatment.
Tempering:
Tempering temperature / ℃ : 552

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