Page 225 - ISCAR(HOLE_MAKING_CATALOG_65)

USER GUIDE

Machining Recommendations
Material Chipbreaker
Tensile Strength Group Hardness Troubleshooting
ISO Material Condition [N/mm ] No. (1) HB First Choice Fracture Wear
2
<0.25% C Annealed 420 1 125
Non-alloy steel >=0.25% C Annealed 650 2 190 G BG B
and cast steel, <0.55% C Quenched and tempered 850 3 250 IC908 IC806 IC9025
free cutting steel >=0.55% C Annealed 750 4 220
Quenched and tempered 1000 5 300 DEEP DRILLING - BTA SYSTEM
Annealed 600 6 200
P Low alloy and cast steel (less 930 7 275 G BG B
than 5% of alloying elements) Quenched and tempered 1000 8 300 IC908 IC806 IC9025
1200 9 350
High alloyed steel, cast Annealed 680 10 200 G BG B
steel and tool steel Quenched and tempered 1100 11 325 IC908 IC806 IC9025
Ferritic/martensitic 680 12 200 G BG B
Stainless steel and cast steel
Martensitic 820 13 240 IC908 IC806 IC9025
G B B
M Stainless steel and cast steel Austenitic, duplex 600 14 180
IC806 IC908 IC9025
Ferritic/pearlitic 15 180
Grey cast iron (GG)
Pearlitic/martensitic 16 260
Ferritic 17 160 G G B
K Nodular cast iron (GGG)
Pearlitic 18 250 IC908 IC806 IC9025
Ferritic 19 130
Malleable cast iron
Pearlitic 20 230
Not hardenable 21 60
Aluminum-wrought alloys
Hardenable 22 100
<=12% Si Not hardenable 23 75
Aluminum- Hardenable 24 90
cast alloys
N >12% Si High temperature 25 130 G G B
>1% Pb Free cutting 26 110 IC908 IC806 IC9025
Copper alloys Brass 27 90
Electrolitic copper 28 100
Duroplastics, fiber plastics 29
Non-metallic
Hard rubber 30
Annealed 31 200
Fe based
Hardened 32 280
High temp. alloys Annealed 33 250
S Ni or Co Hardened 34 350 B B B
based IC806 IC908 IC9025
Cast 35 320
Pure 400 36
Titanium alloys
Alpha+beta alloys hardened 1050 37
Hardened 55 HRC 38
Hardened steel
H Hardened 60 HRC 39 B B B
Chilled cast iron Cast 40 400 IC806 IC908 IC908
Cast iron Hardened 55 HRC 41
(1) For material groups see pages 495-524

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