Sandvik Coromant Heat resistant super alloys - Manual (Page 77)

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Effect of hardness with grade and geometry, E-PL 1030
It can be seen that in harder materials new grade and geometry
E-PL 1030 withstands the heat created during cutting much better
than E-PL S40T.
The harder substrate combined with optimised micro geometry has
better resistance to notch wear and plastic deformation.
Tool R300-063Q22-12H,
D
c
51 mm, f
z
0.24 mm/tooth, h
ex
0.18 mm,
a
p
2 mm, a
e
36 mm, v
c
30 m/min
Material: Inconel 718
Minutes in cut
S30T E-PL S40T E-PL GC1030 E-PM GC1030 E-PL
GC2040 E-MM GC1030 E-PM
Softer batch (44 HRC) Harder batch (46 HRC)
= Average time in cut
= Average volume removed
Total metal removed, cm 3
Hardness 40 HRC
E-MM 2040 – 25 min E-PM 1030 – 55 min E-PL S30T – 10 min E-PL S40T – 33 min
Hardness 46 HRC
E-PM 1030 – 24 min E-PL 1030 – 36 min
Hardness 44 HRC
1750
1400
1050
700
350
0