MD-DR-DH Cutting Parameters

ISO MaterialConditionTensile Strength Rm [N/mm2]Hardness HBMaterial No.Vc [m/min]Feed Vs. Drill Diameter 33 f[mm/rev]
< 0.25 %CAnnealed4201251100-150010-025
≥ 0.25 %CAnnealed6501902..
Non-alloy steel and cast steel, < 0.55 %CQuenched and tempered8502503
free cutting steelAnnealed750220480-150015-030
P ≥ 0.55 %CQuenched and tempered10003005..
Annealed6002006
Low alloy and cast steel (lessQhd d9302757
than 5% of alloying elements)uence an tempered1000300870-1200.15-0.30
12003509
High alloyed steel castAnnealed6802001080-1500.10-0.25
, steel and tool steelQuenched and tempered11003251170-1200.10-0.25
Ferritic /pearlitic18015
Grey cast iron (GG)Pearlitic / martensitic26016180-3000.18-0.35
K NdltiGGGFerritic16017015-030
ouar cas ron ()Pearlitic25018150-250..
Malleable cast ironFerritic13019015-035
Pearlitic23020..

MD-DFN Cutting Parameters

ISO MaterialConditionTensile Strength Rm [N/mm2]Hardness HBMaterial No.Vc [m/min]Feed Vs. Drill Diameter 33 f[mm/rev]
< 0.25 %CAnnealed420125180-110-140
≥ 0.25 %CAnnealed650190290-105-130
Non-alloy steel and cast steel, < 0.55 %CQuenched and tempered850250380-100-1200.30 0.40 0.50
free cutting steelAnnealed750220470-90-110
≥ 0.55 %CQuenched and tempered1000300550-70-90
PAnnealed600200680-100-120
Low alloy and cast steel (lessQhd d930275770-90-110030 040 050
than 5% of alloying elements)uence an temered1000300850-70-90. . .
p1200350940-55-70
High alloyed steel castAnnealed6802001050-70-90
, steel and tool steelQuenched and tempered11003251140-60-800.25 0.30 0.35
Ferritic /pearlitic1801590-125-160
Grey cast iron (GG)Pearlitic / martensitic2601680-110-140
K Nodlar cast iron (GGG)Ferritic1601790-135-1800.40 0.50 0.60
uPearlitic2501880-110-140
Mllbl t iFerritic1301990-125-160
aeae cas ronPearlitic2302080-110-140