Speeds and feeds for drilling stainless steel

I am using a multiple drill system or gang drill to make multiple holes at the same time. Speed equals surface feet per minute in 1Brinell hardness material and the speed should be reduced surface feet per minute for each additional points Brinell hardness. This phenomenon, known as work hardening, occurs because of the heat generated if the incorrect speed and feed rates for drilling and tapping stainless steel are applied. If the cutting speed (RPM ) is too high and the feed is too slow, the drill will “rub” rather than cut, which will create heat and actually toughen the work material.

Just key in the parameters and our calculator will give you the answer. You should use a cutting speed chart to ensure you drill in the most efficient manner possible.

We have produced speed and feed charts for both metric and imperial drill bit sizes. How do you calculate cutting speed? What is the drill speed for stainless steel? Start conservatively and increase speed and feed until drilling cycle is optimized. Make your peck depths a maximum of half your drill diameter Example: 0. Feeds and Speeds - Formulas R. The problem is that many stainless steels – 3and 3in particular – can get harder and tougher to cut as you work if the cutting tools are improperly applied.

With a calculator, you don’t need to worry about how to calculate drill rpm or feed rate.

For deep slots reduce the Ft. Material Properties Stainless steels are high-alloy steels with superior corrosion resistance to carbon and low-alloy steels. To calculate feed rate select a specific RPM from the range below.

Please include as much information about the material you are machining as possible. Because so many people ask how to drill through stainless steel we decided to dedicate a page to this topic. Certainly of all the metals out there stainless steel is the one that seems to cause most problems for people when it comes to drilling. Free 2-day Shipping On Millions of Items.

The calculated speed is 0RPM and the linear feed is 8. Reduce RPM or ensure adequate supports are in place or use an intermediate length gun drill. If at minimum, reduce SFM by. Applications suitable for our Spraymist System, reduce SFM by at same feed rate. MATERIAL AND CUTTING SPEED (FT PER MINUTE) Dia-meter of drill (In.)Alumi-numBrass Bronze Cast iron: Mild steel 0. Bottom lead or Spiral flute taps are used.

Drilling Stainless Steel. Workpiece Material Brinell Hardness (BHN) Morse List No. These calculations are based upon theoretical values and are only intended for planning purposes.

Calculate Speed and Feed for Turning Applications. A customer can find the SFM for the material on the left, in this case 3stainless steel.

The speed and feed calculator provides over years of machining experience to give the best speeds and feeds possible. The program will recommend the ideal solid carbide end mill, slitting saw or PCD and diamond coated tool for your application. SMM = surface meters per minute. Radial Depth of Cut in Percentage of Diameter. CLF = chip load factor.

Find speeds and feeds chart by: Series Number. Compared to type 3stainless , speeds should be roughly lower for optimum tool life and finish. Cutting Speed = (fpm) Diameter of Cutter = 0. Carbide reamers getting chewed as well as drill bits. Any materials, speeds or feeds to recommend?

High speed steel the only one going past one hole so far.