Donghe Metal Product Center Special-shaped copper

C45PB

C45PB is a leaded medium-carbon steel with excellent machinability. C45Pb incorporates the alloying element lead, which increases its strength. Therefore, after heat treatment, C45Pb has a higher tensile strength than C45.

Company phone: 0769-83775310 83775312

Product Introduction

C45PB is a leaded medium-carbon steel with excellent machinability. C45Pb incorporates the alloying element lead, increasing its strength. Therefore, after heat treatment, C45Pb exhibits higher tensile strength than C45. It is generally used to manufacture parts requiring high strength, such as gears, shafts, and piston pins, as well as machined parts subject to low stresses.

Product Parameters

Tensile strength σb (MPa) 690~695
Conditional yield strength σ0.2 (MPa) 415~420
Sectional shrinkage (%) 45~47
Elongation δ5 (%) 25~26
hardness 185~186

chemical composition

Chemical composition (%)
C Si P S Ni Cr Mo Cu Ti Al V Pb
C45PB 0.46 0.25 0.007 0.029 0.04 0.05 0.01 0.09 0.003 0.004 0.002 0.24