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Chemical Composition of Forging Roller Reamer Body
C
Si
Mn
P
S
Cr
Mo
Ni
Cu
Al
4145H(MOD)
0.42- 0.49
0.15- 0.35
1.00- 1.25
Max. 0.025
Max. 0.020
1.20- 1.35
0.30- 0.35
Max. 0.25
Max. 0.35
Max. 0.05
Mechanical Properties and Tests Forging Roller Reamer Body
Minimum Tensile Strength,psi
Elongation, Minimum, With GaugeLength Four Times Diameter£¬ percent
Brinell Hardness
Minimum Charpy V notch Ft”¤lbf
115,000
140,000
15
285-341
40
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