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Classification Chart

Optimum Grade Performance

ISO Grade Classification

CVD GradesPVD GradesUncoatedWhisker
GroupsMaterialsCodeGradeCeramic

NL200 NL250 NL300 NL400 NL920 SP0819 SP4019 GH1 SA6609

P01 P05 P10 P15

P20

Unalloyed

P andAlloyed P25

Steels P30 P35 P40 P45

P50 M01 M05 M10 M15

M Stainless Steels M20

M25 M30 M35 M40

K01 K05 K10 K15

K Cast Irons K20

K25 K30 K35 K40

N01 N05 N10

N Aluminum & N15

Alloys N20 N25 N30 S01

S05 S10

High

S Temperature S15

Alloys S20 S25 S30 H01

H05 H10

H Hard Materials H15

H20 H25 H30 Material Guide – Key to Recommended Inserts

Material Designation

P Unalloyed Steels P Alloyed Steels M Stainless Steels M PH Stainless K Cast Irons N Aluminum & Alloys S High Temp. Alloys H Hard Materials