Page 152 - Carmex - Inch Catalog 2022

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Tiny Tools

Technical Section

Carbide Grades:
BXC (P30 - P50, K25 - K40)
PVD TiN coated grade for low cutting speed.
Works well with a wide range of stainless steels.
BMK (K10 - K20)
Sub-micron grade with advanced PVD triple coating. Extremely high
heat resistant and smooth cutting operation, for high performance, and normal machining conditions.
General purpose for all materials.
K20 (K10 - K30)
Uncoated Carbide grade for non ferrous metals, aluminum and cast iron.
TNX
New advanced carbide grade TNX for higher feeds and high performance, at medium to high cutting
speed. Extra fine grain size with high hardness and toughness combined with triple layer reddish coating,
provides high edge stability and better chip flow.
Cutting speed for Tiny Tools

Cutting Speed
ISO ft/min
Standard Material Condition
BXC BMK K20 TNX
<0.25%C Annealed
Non-Alloy steel and ≥0.25%C Annealed
cast steel, free < 0.55%C Quenched and tempered 82-230 98-262 118-262
cutting steel ≥0.55%C Annealed
P Quenched and tempered
Low alloy steel and cast steel (less Annealed 66-131 82-164 98-164
than 5% alloying elements) Quenched and tempered
High alloy steel, cast steel, and tool Annealed 66-131 82-164 98-164
steel Quenched and tempered
Ferritic/martensitic
M Stainless steel and cast steel Martensitic 82-131 98-197 118-197
Austenitic
Ferritic/pearlitic
Cast iron nodular (GGG) 82-197 98-262 118-262
Pearlitic
Ferritic
K Grey cast iron (GG) 98-230 98-262 118-262
Pearlitic
Ferritic
Malleable cast iron 66-131 66-164 79-164
Pearlitic
Not cureable
Aluminum-wrought alloy 164-328 197-394 98-164 236-394
Cured
<=12% Si Not cureable
Aluminum-cast, Cured 131-262 164-295 66-131
alloyed >12% Si High temperature 197-295
N
>1% Pb Free cutting
Copper alloys Brass 98-197 98-230 66-131 118-230
Electrolytic copper
Non metalic 131-262 66-131
Hard rubber
Annealed
Fe based
High temp. Cured
S alloys, Super alloys Ni or Co Annealed 49-98 49-131 59-131
based Cured
Cast
Titanium alloys Alpha+beta alloys cured 33-98 33-98 39-98
Hardened 45-50 HRc
Hardened steel Hardened 51-55 HRc 33-98 49-131 59-131
H Hardened 56-62 HRc
Chilled cast iron Cast 33-98 33-98 39-98
Cast iron Hardened 33-66 33-66 39-66
Recommended Feed Rate: .0005 - .001 inch/rev
A06-44