Recommended Machining Conditions

ISOMaterialConditionTensile Strength [N/mm2]Hardness HBMaterial Group No.(1)
< 0.25 %CAnnealed4201251
Non-allo steel and cast>= 0.25 %CAnnealed6501902
y tl f tti tl< 0.55 %CQuenched and tempered8502503
see, ree cung see>= 0.55 %CAnnealed7502204
Quenched and tempered10003005
Annealed6002006
PLow alloy and cast steel (less than9302757
5% of alloying elements)Quenched and tempered10003008
12003509
Annealed68020010
High alloyed steel, cast stel and tool steelQuenched and tempered110032511
Stainless steel and cast steelFerritic/martensitic68020012
Martensitic82024013
MStainless steel and cast steelAustenitic,duplex60018014
Gr t irn (GG)Ferritic/pearlitic18015
ey cas oPearlitic/martensitic26016
KNdlr t irn (GGG)Ferritic16017
oua cas oPearlitic25018
Mllbl t iFerritic13019
aeae cas ronPearlitic23020
Alih llNot hardenable6021
umnum-wrougt aoysHardenable10022
Not hardenable7523
Aluminum-cast alloysHardenable9024
N>12% SiHigh temperature13025
>1% PbFree cutting11026
Copper alloysBrass9027
Electrolitic copper10028
NlliDuroplastics,fiberplastics29
on-metacHard rubber30
F bdAnnealed20031
e aseHardened28032
High temp. alloysAnnealed25033
SNi or Co basedHardened35034
Cast32035
Pure40036
Titanium alloysAlpha+beta alloys hardened105037
Hdd tlHardened55 HRC38
Harene seeHardened60 HRC39
Chilled cast ironCast40040
Cast ironHardened55 HRC41

(1) Based on ISO 513 and VDI 3323 standards