hot rolled AISI 4140 alloy round steel bar size:60*6000mm(16-250mm) process:LD+FL+RH+CCM+heat treatment(Q+T)

hot rolled AISI 4140 alloy round steel bar

material:AISI 4140/42CrMo4/42CrMo/SCR440

size:60*6000 mm(16-250mm)

state of delivery:hot rolled

manufacturing process:LD+LF+CCM

Norm:GB/T 3077-1999

origin:China Jiangsu province

Chemical component(%):

C 0.40,Si 0.24,Mn 0.62,Cr 1.00,Ni 0.02,Mo 0.16,Cu 0.01,P 0.011 ,S 0.005,Al 0.007 

Heat treatment:

Temprature:860 degrees Celsius

 Time:50 min

Medium:oil

Mechanical properties:

Rel(N/MM2):1020

Rm(N/MM2):1100

A(%):17

Z(%):59

Aku2(J):64

Macro-structure(Grade):

scattered porosity:0.0/0.0

central porosity:1.0/1.0

segregation:0.0/0.0

Application: AISI 4140  bars with quenching and tempering used for manufacturing under medium load and  mechanical parts,such as:axle,machine tools,shafts,gears,sleeves,mandrel,rings ,bolt etc