A End mill – GM series

pGM- GM- GM- St2BL 4BL 2BFP arting values for cutting speeGM GM d vc [m/m-2R -4R in]
BillgrouSlot millingShoulder milling
Material groupComposition / structure / heat treatmentrne hardness HBningØ [mm]ap maxØ [mm]ae max
achi0 < x < 30,1 x D0 < x ≤ 20< 0,5 x D
M3 ≤ x ≤ 200,8 x D
KMG303KMG303
ae/ Dae/ D
1/11/101/20f-group1/11/21/10f-group
approx. 0,15 % Cannealed125122025051602152752
approx. 0,45 % Cannealed190221024051552052652
Unalloyed steelapprox. 0,45 % Ctempered250315517551151551952
approx. 0,75 % Cannealed270413515051001301652
approx. 0,75 % Ctempered30051251405901201552
Pannealed180616519051201652102
Low-alloyed steeltempered275713515051001301652
tempered30081251405901201552
tempered35091151305851151452
High-alloyed steel and high-alloyedannealed2001015517551151551952
tool steelhardened and tempere325 d111201355851151502
ferritic/martensiticannealed20012758055570902
martensitictempered24013657054565802
M Stainless steelausteniticquench hardened18014758555575952
austenitic-ferritic23015657054565802
Grey cast ironperlitic/ferritic1801616518551201602052
perlitic (martensitic)2601713515051001301652
ferritic1601820022551451952502
K Cast iron with spheroidal graphite
perlitic2501915517551151551952
Malleable cast ironferritic1302022025051602152752
perlitic2302118020051301752202
cannot be hardened6022
Aluminium wrought alloys
hardenablehardened10023
≤ 12 % Si, cannot be hardened7524
N Cast aluminium alloys≤ 12 % Si, hardenablehardened9025
> 12 % Si, cannot be hardened13026
machining steel, PB> 1%11027
Copper and copper alloys (bronze/brass)CuZn, CuSnZn9028
CuSn, Pb-free copper, electrolytic copper10029
annealed20030
Fe-based alloys
hardened28031
Heat-resistant alloysannealed25032
SNi or Co basshardened35033
cast32034
pure titaniumRm40035
Titanium alloysα and β alloyshardenedRm105036
Hardened steelhardened and tempere hardened and tempere55 HRC 60 HRC d d37 38
H Hard cast ironcast40039
Hardened cast ironhardened and tempere55 HRC d40
Thermoplasts41
Thermosetting plastics42
Plastic, glass-fibre reinforced Gi FRP43
X Non-metallic materialsPlastic, carbon fibre reinforcedi CFRP44
Graphite Wood45 46

Note: The given cutting values are guide values, which were determined under ideal conditions. The values have to be adapted in individual cases. Feed rate recommendations on page B460.