05-20-2015, 07:59 AM
Yes Pete, the smaller numbers on the chart are for feed rate per revolution in inches per rev.
As for the P15-P30 and other data, that's material types in ISO classification.
P = carbon steels, ferrictic and martensitic stainless steels
M = austenitic (non magnetic) stainless steels
K = cast iron, short-chipping
N = non-ferrous, copper, brass, bronze, and aluminium
S = superalloys, iron or cobalt based, titanium
H = hardened steels over 55Rc/400HBn
O = plastics, other long chipping soft materials which may also include glass and fiber filled
The 05-50 numbering system relates to the toughness of the carbide within its class. A "P10" would be harder, more wear resistant, while a "P40" would have a higher cobalt binder content and be tougher, more resistant to breakage under interrupted cuts.
As for the P15-P30 and other data, that's material types in ISO classification.
P = carbon steels, ferrictic and martensitic stainless steels
M = austenitic (non magnetic) stainless steels
K = cast iron, short-chipping
N = non-ferrous, copper, brass, bronze, and aluminium
S = superalloys, iron or cobalt based, titanium
H = hardened steels over 55Rc/400HBn
O = plastics, other long chipping soft materials which may also include glass and fiber filled
The 05-50 numbering system relates to the toughness of the carbide within its class. A "P10" would be harder, more wear resistant, while a "P40" would have a higher cobalt binder content and be tougher, more resistant to breakage under interrupted cuts.