MATERIALS HARDNESS/Rm

P1Free cutting steel and structural steel< 500 N/mm²
P2Carbon steel and low alloy steel500-700 N/mm²
P3Medium alloy steel and heat treated steel600-800 N/mm²
MATERIALSHARDNESS/Rm
P1Free cutting steel and structural steel< 500 N/mm²
P2Carbon steel and low alloy steel500-700 N/mm²
P3Medium alloy steel and heat treated steel600-800 N/mm²
P4High alloy steel800-1000 N/mm²
P5Tool steel900-1200 N/mm²
P6High tensile strength steel1200-1480 N/mm²
P7Ferritic - Martensitic stainless steel
P8PH stainless steel
M1Austenitic stainless steel (good machinability)
M2Austenitic stainless steel (medium machinability) and Duplex
M3Super austenitic stainless steel and super Duplex
K1Grey cast iron150-250 HB
K2Nodular cast iron150-350 HB
K3Austenitic cast iron120-260 HB
K4ADI cast iron250-500 HB
N1Aluminium alloys ≤ 12% Si
N2Aluminium alloy > 12% Si and Aluminium-Magnesium
N3Copper alloy
N4Brass alloy and Bronze alloy
N5Plastic material
N6Carbon fiber and composite
S1Heat resistant super alloys (HRSA) Ni base (good machinability)< 25 HRC
S2Heat resistant super alloys (HRSA) Ni base (medium machinability)25-35 HRC
S3Heat resistant super alloys (HRSA) Ni base (low machinability)35-45 HRC
S4Low Titanium base alloy (good machinability)
S5High Titanium base alloy (medium machinability)
H1Hardened steel50-56 HRC
H2Hardened bearing steel54-62 HRC
H3Hardened tool steel60-65 HRC
H4Hardened martensitic stainless steel50-56 HRC
H5Hardened white cast iron48-55 HRC