Page 378 - Carmex - Metric Catalog 2021

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Mill-Thread Technical Section

AMT Solid Carbide Thread Mills

for Aluminum Machining

Solid carbide thread mills for High-speed Aluminum machining.
High-speed aluminum machining requires tools that minimize the tendency of Aluminum to stick to
the tool cutting edges, provides high surface finish, ensuring efficient chip evacuation and sufficient
strength of the cutting edge to absorb the cutting forces.

Features

Optimized carbide grade for Aluminum, cast iron and stainless steels
Cylindrical shank (Weldon shank - upon request)
With internal coolant bore
Uncoated, smooth cutting edge
High thread surface quality
Same tool for right hand or left hand internal threads
Additional items with cutting chamfer

Cutting Data

AMT

K20 Uncoated Sub- Micron carbide grade for Aluminum and non- ferrous
materials, Stainless Steels and Titanium.

Cutting Feed mm/tooth
ISO Cutting Diameter = D
Standard Materials Speed
m/min D ≤ 4 4 < D < 9 D ≥ 9
Low & Medium Carbon Steels 50-140 0.005-0.03 0.01-0.05 0.02-0.10
< 0.55%C
P High Carbon Steels ≥0.55%C 60-130 0.005-0.02 0.01-0.04 0.02-0.09

Alloy Steels, Treated Steels

Stainless Steel-Free Cutting 40-120 0.005-0.02 0.01-0.04 0.02-0.09

M Stainless Steel-Austenitic

Cast Steels 70-120 0.005-0.03 0.01-0.05 0.02-0.10

K Cast Iron 50-120 0.005-0.03 0.01-0.05 0.02-0.10

Aluminum ≤12%Si, Copper 130-250 0.005-0.04 0.01-0.06 0.02-0.13

N Aluminum >12%Si 80-180 0.005-0.04 0.01-0.06 0.02-0.13
Synthetics, Duroplastics, 80-180 0.005-0.04 0.01-0.06 0.02-0.13
Thermoplastics
S Nickel alloys, Titanium alloys 20- 80 0.005-0.02 0.01-0.04 0.02-0.09

B12-16