How to understand and make the most out of our Grade Tables

  • We use the PMK convention that is used in most of the cutting tool catalogs. (Example P05-15, K25-40, etc.). If you are not familiar with it please read our Detailed Explanation
  • We divide the grades into several "Grade Statuses":
    • Active Main Grades - Are the primary grades of each brand.
    • Active complimentary Grades - These are additional possibilities either older or used for specific situations.
    • You can use the filter above the table to view both or one of them.
    • In addition, we list on the bottom of the page additional older and non-active grades.

Walter Turning Grades Chart

Material Grade Coating grade_status App Range 05 10 15 20 25 30 35 40 45
P - Steel WPP10S (WPP10) CVD Main Grades P05 - P20 P P P P
P - Steel WPP05S (WPP05) CVD Main Grades P05 - P15 P P P
P - Steel WPP01 CVD Additional Grades P05 - P05 P
P - Steel WPP20S (WPP20) CVD Main Grades P10 - P30 P P P P P
P - Steel WMP20S CVD Additional Grades P15 - P35 P P P P P
P - Steel WPP30S (WPP30) CVD Main Grades P20 - P40 P P P P P
P - Steel WKP33S CVD Additional Grades P30 - P45 P P P P
P - Steel WKP30S CVD Additional Grades P30 - P45 P P P P
M - Stainless Steel WSM10S (WSM10) PVD Main Grades M05 - M20 M M M M
M - Stainless Steel WSM01 PVD Additional Grades M05 - M05 M
M - Stainless Steel WMP20S CVD Main Grades M10 - M30 M M M M M
M - Stainless Steel WSM20S (WSM20) PVD Main Grades M10 - M30 M M M M M
M - Stainless Steel WSM30S (WSM30) PVD Main Grades M25 - M40 M M M M
K - Cast Iron WKK10S CVD Main Grades K05 - K20 K K K K
K - Cast Iron WKK20S CVD Main Grades K10 - K30 K K K K K
K - Cast Iron WKK25S (WKK25) PVD Additional Grades K15 - K35 K K K K K
N - Non-Ferrous WN10 Uncoated Main Grades N05 - N20 N N N N
S - Superalloys WSM10S (WSM10) PVD Main Grades S05 - S20 S S S S
S - Superalloys WSM01 PVD Main Grades S05 - S05 S
S - Superalloys WSM20S (WSM20) PVD Main Grades S10 - S30 S S S S S
S - Superalloys WSM30S (WSM30) PVD Main Grades S20 - S40 S S S S S

Walter Milling (Indexable) Grades Chart

Material Grade Coating grade_status App Range 05 10 15 20 25 30 35 40 45
P - Steel WKP25S (WKP25) CVD Main Grades P15 - P35 P P P P P
P - Steel WKP35G CVD Main Grades P25 - P45 P P P P P
P - Steel WSP45S (WSP45S) PVD Main Grades P35 - P45 P P P
P - Steel WSM45X CVD Main Grades P35 - P45 P P P
P - Steel WMP45G CVD Additional Grades P35 - P45 P P P
M - Stainless Steel WSM35S PVD Main Grades M25 - M45 M M M M M
M - Stainless Steel WSP45S (WSP45S) PVD Main Grades M35 - M45 M M M
K - Cast Iron WAK15 CVD Main Grades K05 - K25 K K K K K
K - Cast Iron WKP25S (WKP25) CVD Main Grades K15 - K35 K K K K K
K - Cast Iron WKK25S (WKK25) PVD Additional Grades K15 - K35 K K K K K
K - Cast Iron WKP35G CVD Main Grades K25 - K45 K K K K K
N - Non-Ferrous WXN15 PVD Main Grades N05 - N25 N N N N N

Walter Parting Off Grades Chart

Material Grade Coating grade_status App Range 05 10 15 20 25 30 35 40 45
P - Steel WKP13S CVD Main Grades P05 - P20 P P P P
P - Steel WKP23S CVD Additional Grades P10 - P30 P P P P P
P - Steel WSM23S PVD Main Grades P10 - P30 P P P P P
P - Steel WKP33S CVD Additional Grades P20 - P40 P P P P P
P - Steel WSM33S (WSM33) PVD Main Grades P20 - P40 P P P P P
P - Steel WSM43S PVD Main Grades P30 - P45 P P P P
M - Stainless Steel WSM13S PVD Main Grades M05 - M20 M M M M
M - Stainless Steel WSM23S PVD Main Grades M10 - M30 M M M M M
M - Stainless Steel WSM33S (WSM33) PVD Main Grades M20 - M40 M M M M M
M - Stainless Steel WSM43S PVD Main Grades M30 - M45 M M M M
K - Cast Iron WKP13S CVD Main Grades K05 - K20 K K K K
K - Cast Iron WKP23S CVD Main Grades K10 - K30 K K K K K
K - Cast Iron WKP33S CVD Main Grades K20 - K40 K K K K K
N - Non-Ferrous WN13 Uncoated Main Grades N05 - N20 N N N N
S - Superalloys WSM13S PVD Main Grades S05 - S20 S S S S
S - Superalloys WSM23S PVD Main Grades S10 - S30 S S S S S
S - Superalloys WSM33S (WSM33) PVD Main Grades S20 - S40 S S S S S
S - Superalloys WSM43S PVD Main Grades S30 - S45 S S S S

Walter Grooving Grades Chart

Material Grade Coating grade_status App Range 05 10 15 20 25 30 35 40 45
P - Steel WKP13S CVD Main Grades P05 - P20 P P P P
P - Steel WKP23S CVD Additional Grades P10 - P30 P P P P P
P - Steel WSM23S PVD Main Grades P10 - P30 P P P P P
P - Steel WKP33S CVD Additional Grades P20 - P40 P P P P P
P - Steel WSM33S (WSM33) PVD Main Grades P20 - P40 P P P P P
P - Steel WSM43S PVD Main Grades P30 - P45 P P P P
M - Stainless Steel WSM13S PVD Main Grades M05 - M20 M M M M
M - Stainless Steel WSM23S PVD Main Grades M10 - M30 M M M M M
M - Stainless Steel WSM33S (WSM33) PVD Main Grades M20 - M40 M M M M M
M - Stainless Steel WSM43S PVD Main Grades M30 - M45 M M M M
K - Cast Iron WKP13S CVD Main Grades K05 - K20 K K K K
K - Cast Iron WKP23S CVD Main Grades K10 - K30 K K K K K
K - Cast Iron WKP33S CVD Main Grades K20 - K40 K K K K K
N - Non-Ferrous WN13 Uncoated Main Grades N05 - N20 N N N N
S - Superalloys WSM13S PVD Main Grades S05 - S20 S S S S
S - Superalloys WSM23S PVD Main Grades S10 - S30 S S S S S
S - Superalloys WSM33S (WSM33) PVD Main Grades S20 - S40 S S S S S
S - Superalloys WSM43S PVD Main Grades S30 - S45 S S S S

Walter Older Non-Active Grades

A list of additional older grades that are no longer in the Catalog, or had been replaced with moden generation grades.

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