Milling Stainless Steel With Hss

This article gives suggested feeds and speeds for drilling and reaming taken from the bssa stainless steel specialist course training note no9 machining stainless steels.

Milling stainless steel with hss.

Traditionally high speed steel hss tools have been used for drilling and reaming but carbide tipped tools are also used for specialised jobs or long production runs. Stainless steel 400 series and ph. Cutting speed 50 fpm diameter of cutter 1 00. A 3 4 inch hss drill is used on a piece of leaded 11l17 steel with a brinnel hardness of 100.

In solid carbide drills microcracks can form on the cutting edges which will eventually cause the drill to fail. When you machine stainless steel you are generating high temperatures explained scott turner marketing manager holemaking seco tools. Calculate the rpm setting to perform this cutting operation. Hss twist drill recommended speeds and point angles.

Free machining plain carbon steels resulfurized 1212 1213 1215. Helical solutions offers the hev 5 end mill which is an. And hb brinell hardness number. Are unlikely to be substantial enough for the successful machining of stainless steels.

Recommended cutting speeds in feet per minute for turning milling drilling and reaming ferrous cast metals. Machines should not be prone to excessive vibration in the machine bed drives and gear boxes or at the cutting tool or its mountings. Recommends sfm feed rates and point angles for hss twist drills for various workpiece materials. High efficiency milling can be a very effective machining technique in stainless steels if the correct tools are selected.

A 1 00 inch high speed steel hss drill is being used on a piece of 1045 steel with a brinnel hardness of 300. Speeds for turning based on a feed rate of 0 012 inch per revolution and a depth of cut of 0 125 inch. Small training or hobbies lathes and milling machines intended for machining mild steel brasses etc. Q and t quenched and tempered.

Stainless steel 200 300 series.