Specifications

1)Material: Alloy Steel.
2)Hardness:HRC45-50.
3)Type:The rectangle spline shaft,Involute spline shaft.

 

1..Material   

Standard	Material
GB	45	40Cr	42CrMo	20Cr	40CrNiMoA
AISI	1045	5140	4140	5120	4340
DIN	C45	41Cr4	42CrMo4	20Cr4	1.6511
JIS	S45C	SCr440	SCM440	SCr420	SNCM439

 

2.Standard: 

BS, JIS, ASME,AISI,GOST,DIN,etc

 

3.Specifications of tension rod

Product	Diameter (mm)	Length (m)	Gear Type			Weight
Gear shaft	100 2000	≤ 15	Spur Gear	Helical Gear	Herringbone Gear	≥ 500 KG

 

4 Chemical Components and Mechanical Character

 

 4140

Components	C	Mn	Si	P	S	Cr	Ni	Mo
Min Max	0.38 0.45	0.50 0.80	0.17 0.37	≤ 0.035	≤ 0.035	0.90 1.20	≤ 0.030	0.15 0.25

 

 

5. Manufacturing process

Forging/+ Rough machining + UT test + Semi-finishing + Carburizing + Quench + Precision machining+ Package

6.Report

Chemical composition report, Physical properties report, Heat treatment report, Dimensional inspection report, NDT report

 

7.Nondestructive test (NDT)

UT ( ultrasonic testing ), MT ( magnetic particle testing ), PT ( penetrant testing)