Recommended Machining Conditions

ISO MaterialConditionTensile Strength [N/mm2]Hardness HBMaterial Group No.(1)
< 0.25 %CAnnealed4201251
>= 0.25 %CAnnealed6501902
Non-alloy steel and cast steel, free cutting steel < 0.55 %CQuenched and tempered8502503
>= 0.55 %CAnnealed7502204
Quenched and tempered10003005
Annealed6002006
P Low alloy and cast steel (less than9302757
5% of alloying elements)Quenched and tempered10003008
12003509
Hih lld tl t tl d tl tlAnnealed68020010
g aoye see, cas see an oo seeQuenched and tempered110032511
Stainless steel and cast steelFerritic/martensitic68020012
Martensitic82024013
M Stainless steel and cast steelAustenitic, duplex60018014
G i GGFerritic/pearlitic18015
rey cast ron ()Pearlitic/martensitic26016
K Nodlar cast iron (GGG)Ferritic16017
uPearlitic25018
Mllbl t iFerritic13019
aeae cas ronPearlitic23020
Aluminum-wrouht allosNot hardenable6021
g yHardenable10022
Not hardenable7523
Aluminum-cast alloysHardenable9024
N >12% SiHigh temperature13025
>1% PbFree cutting11026
Copper alloysBrass9027
Electrolitic copper10028
N-tlliDuroplastics, fiber plastics29
onmeacHard rubber30
Fe basedAnnealed20031
Hardened28032
High temp. alloysAnnealed25033
S Ni or Co basedHardened35034
Cast32035
Pure40036
Titanium alloysAlpha+beta alloys hardened105037
Hdd tlHardened55 HRC38
H arene seeHardened60 HRC39
Chilled cast ironCast40040
Cast ironHardened55 HRC41

(1) Based on ISO 513 and VDI 3323 standards