High Speed Steel Cutting Tools Operate At Cutting Speeds

A 1 00 inch high speed steel hss drill is being used on a piece of 1045 steel with a brinnel hardness of 300.

High speed steel cutting tools operate at cutting speeds.

Under equally suitable applications a carbide tool can cut 4 to 12 times faster than hss depending on work material and type of operation and naturally the productivity is proportionally high. Softer metals like aluminum and mild steel have higher cutting speeds than do nasty metals like titanium or inconel. Cutting speeds for various materials using a plain high speed steel cutter material type meters per min mpm surface feet per min sfm steel tough 15 18 50 60 mild steel 30 38 100 125 cast iron medium 18 24 60 80 alloy steels 20 37 65 120 carbon steels 21 40 70 130 free cutting steels 35 69 115 225. Cutting speed 50 fpm.

For reamers use 1 2 to 2 3 speed given in this table. Cutting speeds with hss. As already mentioned hss can in no way compete with carbide tools when it comes to cutting speeds. So too can carbide and ceramic cutting tools achieve higher speeds regardless of the workpiece material than do ones made of high speed.

Recommended cutting speeds using high speed steel tools. Calculate the rpm setting to perform this cutting operation. For carbide tools double the speeds.