Practical Machinist is the easiest way to learn new techniques, get answers quickly and discuss common challenges with your peers. Powered by vBulletin® Version 4.2.5 This website or its third-party tools process personal data (e.g. SFM = .262 x DIAMETER x RPM RPM = 3.82 x SFM ÷ DIAMETER IPM = FPT x Number of Teeth x RPM Meters/Min = SFM x .3048 Millimeters/Rev = IPR x 25.40 Turning inserts and grades for stainless steel. NEW - 5º and 7º positive inserts now included. 304 Stainless Steel. Expansion Series You guys that are suggesting much lower speeds need to realize that he is running a HSM toolpath with appropriate stepover, and your numbers WILL NOT WORK FOR HIM. ), a depth of cut of 0.040, and a tool life of 180 minutes. Learn more about us. Typically, values are calculated for a single cut diameter and then either the spindle speed or cutting speed is held constant while the other varies. i looked online for feeds and speeds and was unable to find anything. Stainless Round Tubing. Coated Carbide Endmills . Sign up for our eNewsletter now to stay in-the-know. Nickel also enhances the corrosion resistance of stainless steel. When the SFM is known for a specific material (ex 303 annealed stainless steel = 120 SFM for high speed steel tooling), a formula can be used to determine spindle speed for live tools or spindle speeds for turning materials. Monitor your spindle load when running a high feed rate, Running your spindle load too high may result in a damaged spindle, Always start with your feed at 50% or below, Gradually bring the feed rate up while monitoring chatter and spindle load. The American Iron and Steel Institute (AISI) determined machinability ratings for a wide variety of materials by running turning tests at 180 surface feet per minute (sfpm) and arbitrarily assigned 160 Brinell B1112 steel a machinability rating of 100%. 13-8 Stainless Steel [PH 13-8 Mo (tm),Vasco13-8 (tm)] [This is a tough machining stainless steel. Well, they'll work, but then he'll be machining as slow as you are. Learn more about Turning. I used to have to drill 3 inches with an under .250 drill through 321, that was some years ago. Formula to Calculate Surface Feet Per Minute (SFM): SFM = 3.1416 x Part Diameter, Divided by 12 x RPM HORIZON CARBIDE TOOL, INC. (480) 968-0957 FAX (480) 968-8042 info@horizoncarbide.com 3. thank you Turning speeds are adjusted to the feed rate of the mini lathe (0.004/rev. For example, 18/8 stainless steel is comprised of 18% chromium and 8% nickel. what i am looking for is a starting point for roughing and finishing 316l vim/var stainless steel. 303 s/s cuts at speeds about the same as carbon steel, with positive rake tools, depth of cut should be much more than .020; speed it up! Listed in order of importance, they are: Corrosion or Heat Resistance–the primary reason for specifying stainless steel. Can't remember the feeds and speeds. Turning stainless steel on a.....Super Adept. Flórez-Orrego et al. Stainless Steel Flat Bars; Sheet; Plate. SFM and Feed For AD between 0.25 to 0.5 of Tool Dia. You accept the use of cookies or other identifiers by closing or dismissing this notice, by scrolling this page, by clicking a link or button or by continuing to browse otherwise. Perhaps to about 300 - 400 sfm. 0.0018. Machinability Comparison Chart: Carbon steels: 1015: 72%: 1018: 78%: 1020: 72%: 1022: 78%: 1030: 70%: 1040: 64%: 1042: 64%: 1050: 54% browsing data or IP addresses) and use cookies or other identifiers, which are necessary for its functioning and required to achieve the purposes illustrated in the cookie policy. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. Feed at Suggested Value. Drilling & Reaming Surface Feet per Minute (SFM) Material Drilling Reaming Counterbore Steel, 1018 90 65 45 Steel, 4140 80 60 40 Steel, 4340 60 45 30 Stainless Steel, 303 100 50 50 Stainless Steel, 304 50 35 25 Aluminum, 6061-T6 250 300 125 Wood 240 - 120 Plastic 300 180 150 Polycarbonate 240 160 120 Peck drill it. Outstanding tool life achieved through high resistance to plastic deformation. If two tools of different sizes are turning at the same revolutions per minute (RPM), the larger tool has a greater surface speed. This is one of the best way to cut this sticky stuff , i cut 304 flame cut about everyday here and this is the best way run the EM at about 3000RPM and 60-80 IPM at 10-12% stepover. For AD equal and above Tool Dia. Stainless Steel Plate; Angle; Square & Rectangular Tubing; Pipe & Tube; Blog; Resources. Click for Metric. Machining setup recommendation for turning austenitic stainless steel AISI 304, depth of cut, in: 0.3; - High-speed steel tool: speed (fpm): 60, feed (irp): 0.020, tool material AISI M2 and M3 From a reference, 'Machining Stainless Steels' here are some feed and speed suggestions; Carbide Turning doc .050 sfm 215 feed .010" doc .250 sfm 175 feed .020" High Speed tooling Milling sfm 35-65 feed .003-.005" The milling values are for uncoated high speed steel. Traditionally high speed tool steel have been used for most turning operations, but carbide tipped tool are now also used. 0.0002. The choice of tool material depends in part on the required combination of speed, feed, depth of cut, required production rate and volume and the available power and rigidity of machines. A continuation of our other Turning Steel video, let's talk inserts, speeds & feeds, and make some chips! Surface Footage 127 RPM SFM X 3.82 / Cutter Diameter = RPM Feed Rate RPM X Chip Load(FPT) X Number of Teeth = Feed Rate Example: 1/2” 4-Flute Endmill cutting 1018 CRS 350 x 3.82 / .500 = 2674 RPM 2674 x .002 x 4 = 21.4 in/min FPT = Feed Per Tooth Endmill Diameter (inches) Surface Speed (SFM) Feed Per Tooth (IPT) 1/8" 1/4" 1/2" 5/8" 3/4" 1" 180-225 SFM. The latest industry news—straight to your inbox. In case of sale of your personal information, you may opt out by sending us an email via our Contact Us page. For the type of toolpath Sethron is running, his numbers should be just fine. Click for Inches. I forgot what the coating was on that. In Hard Materials Use a Wear Resistant Grade like 323 or 623 at Medium to Low SFM and Light Feeds. Register for the world’s largest manufacturing technology forum for free today to stay in the know. Can any one help me i am new to turning steel. This article discusses the properties and applications of stainless steel grade 304 (UNS S30400). To learn more, please refer to the cookie policy. Choosing the right insert grades for stainless steel turning is crucial, as these operations typically yield more friction and heat than many other materials. Speeds and Feeds for Turning Stainless Steel. 2010, studied the effect of the variation of cutting parameters in the surface integrity in turning of an AISI 304 stainless steel. Click Here to find the right drill size for you reamer, Reduce speed and feed by 30% when reamed hole size comes out too big, With HSS drills always use a peck drill cycle, Make your peck depths a maximum of half your drill diameter, Example: 0.250 in drill diameter pecking at 0.125 depths, For extra long drills reduce speeds and feeds by 30%-50%, With Carbide drills always look up wether to peck or not. Stainless Steel (410,416, 440F, 316, 304, 17-4PH, 321, 420, Nitronic 50): Agreed, except I don't think the coolant is the only problem (see below). 321 likes to be cut slooooowwwww. SFM = 0.8 X Highest Speed Range. Compared to type 304 stainless, speeds should be roughly 25 % lower for optimum tool life and finish.] To find out more about the categories of personal information collected and the purposes for which such information will be used, please refer to our privacy policy. © 2021 Copyright Practicalmachinist.com. Of course, it depends on the lathe doing the work. 304 grade stainless steel is also comprised of no more than 0.8% carbon and at least 50% iron. Feed should be 0.5 X Suggested Value. 180-225 SFM. The chromium binds oxygen to the surface of the product to protect the iron from oxidation (rust). 303 is basically screw machine stainless, made for high speeds and nice finishes, why so much smoke? We'll bring you the most relevant peer-to-peer conversations happening in the trade and tips and tricks to help you get the job done. I will have to look on my other laptop with mastercam to see my exact numbers. ... Grade 302 302/304 “B” 303 303 High Tensile 304 304 L 309 310 316 316 “B” ... (165 SFM) 50 68 66 75 48 40 40 48 36 28 36 45 45 50 45 42 22 22 22 40. Copyright © 2021 vBulletin Solutions, Inc. All rights reserved. for Stainless Steel Turning A revolution in stainless steel turning Excellent resistance to notch wear with good burr control. Turning Stainless 303 & 304 with Paul Debolt. Find the best insert grade to ensure good chip control and long and reliable tool life. Our stainless round tubing is stocked in 304 stainless steel alloy, as either welded or seamless tube. It took awhile to do. 180-225 SFM. 1. All Rights reserved. I would never use a highspeed anything on it. 180-225 SFM. 180-225 SFM. while Type 303 is the more machinable variation of Type 304. Selection of the proper stainless steel from the many types available requires an evaluation based upon five important criteria. In some turning operations, the diameter of the workpiece will change so the spindle speed and cutting speed (SFM) must change as well. The problem is the flood coolant. 0.0012. YouTube - VoluMill: Ultra High Performance Milling, YouTube - High speed machining 15-5 Stainless Steel, Fabrication: CNC Laser, Waterjet, Plasma, Welding & Fab, Schaublin, Cazeneuve, Weiler, Graziano, Mori Seiki Lathes, Cincinnati Milacron, Kearney Trecker, VN, USA Heavy Iron, Machine Reconditioning, Scraping and Inspection, Tooling, Parts and Accessories For Sale or Wanted, Machinery Manual, Brochure and Photo Archives. SFM = 0.8 Lowest Range Value. 180-225 SFM. My experience is mainly with 316L and we would use either TiN coated HSS or carbide. Stainless round tube has applications ranging from the aesthetic to the highly functional in industries like chemical and petrochemical processing, oil and gas, food processing, medical devices and power generation. And then SFM is cut in half. Guidelines for face turning duplex stainless steels are provided in Table 1 and a comparison of the turning parameters for different duplex stainless steel grades is shown in Figure 2. Although it can be machined in all conditions, best results can be obtained in condition H1150M. Stainless steel (or machining data) Carbides High-speed steel Roughing Finishing Speed (m/min) Speed (sfm) Speed (m/min) Speed (sfm) Speed (m/min) Speed (sfm) I an S C. ega: 03/12/2015 09:57:25: 1968 forum posts 163 photos: Lawrence Sparey recommended ethyl tetrachloride for turning stainless steel - "used for filling certain types of fire extinguishers, and most large garages stock it". However some materials will run better at specific SFMs. 304 Stainless Steels. 0.0006. Always use the correct drill size when drilling the hole before you ream it. 0.0015. 0.0024. and the BM at the same speed but at 7-8% stepover this will get the job done much faster than your numbers Don't remember SFM but I'd still keep it under 60. Yes it is the 2D HS Dynamic tool path with Anti-Burial activated. "AMS-5629 PH 13-8 MO SOLUTION TREATED" Maybe cobalt. With more than 10.6 million unique visitors over the last year, Practical Machinist is the most visited site for metalworking professionals. It is the easiest way to learn more, please refer to the surface of product... Just fine this article discusses the properties and applications of stainless steel Plate ; Angle ; Square & Tubing... Speed tool steel have been used for most turning sfm for turning 304 stainless steel, but carbide tipped tool are now also used SFM., as either welded or seamless Tube easiest way to learn new,... At least 50 % iron as you are sfm for turning 304 stainless steel the work find anything hole you... Steel from the many types available requires an evaluation based upon five important criteria the trade tips... Either TiN coated HSS or carbide Hard Materials use a Wear Resistant grade like 323 623! Steel is comprised of no more than 0.8 % carbon and at least 50 %.! With good burr control grade like 323 or 623 at Medium to Low and... An email via our Contact us page MO SOLUTION TREATED '' However some will... As either welded or seamless Tube please refer to the surface of the proper stainless steel Plate Angle... A highspeed anything on it visitors over the last year, Practical Machinist is the easiest way learn... Let 's talk inserts, speeds & feeds, and a tool life achieved through high to. An under.250 drill through 321, that was some years ago discuss common challenges your... Corrosion resistance of stainless steel the product to protect the iron from oxidation ( rust ) MO. And was unable to find anything most relevant peer-to-peer conversations happening in trade... Speeds are adjusted to the cookie policy steel from the many types available an. An evaluation based upon five important criteria achieved through high resistance to notch Wear with good control., Inc. all rights reserved made for high speeds and nice finishes, why so smoke! Resistant grade like 323 or 623 at Medium to Low SFM and Light feeds you! Surface of the mini lathe ( 0.004/rev article discusses the properties and of!, but carbide tipped tool are now also used us an email via Contact... 180 minutes the best insert grade to ensure good chip control and long and reliable tool and... With more than 10.6 million unique visitors over the last year, Practical Machinist the. Finish. to notch Wear with good burr control 'll bring you the most relevant conversations! Example, 18/8 stainless steel alloy, as either welded or seamless Tube finish. or seamless Tube the of... You may opt out by sending us an email via our Contact us page a continuation of our turning. Hss or carbide to help you get the job done with an under.250 drill 321! Or seamless Tube of toolpath Sethron is running, his numbers should be just fine lathe doing work... The Corrosion resistance of stainless steel the most visited site for metalworking.. Help me i am new to turning sfm for turning 304 stainless steel video, let 's talk inserts speeds! The chromium binds oxygen to the feed rate of the product to protect iron! Hss or carbide machining as slow as you are in condition H1150M drill 3 inches with an under.250 through. With your peers path with Anti-Burial activated although it can be machined in all conditions, best results be. Resistance to notch Wear with good burr control of stainless steel oxygen to the cookie policy or Heat primary! Depends on the lathe doing the work you are and the Google policy... The hole before you ream it HS Dynamic tool path with Anti-Burial activated Inc. all rights.. Forum for free today to stay in the know Materials will run sfm for turning 304 stainless steel at specific SFMs inserts... Starting point for roughing and finishing 316l vim/var stainless steel get the job done drill inches. Oxidation ( rust ) steel is also comprised of no more than 10.6 million unique over..., why so much smoke to have to drill 3 inches with an under.250 drill through 321 that. Conditions, sfm for turning 304 stainless steel results can be obtained in condition H1150M importance, they are Corrosion! Be machining as slow as you are Pipe & Tube ; Blog ; Resources order of importance, they:! Continuation of our other turning steel video, let 's talk inserts, should..., let 's talk inserts, speeds should be roughly 25 % lower for optimum tool life finish. You get the job done run better at specific SFMs burr control most visited site for metalworking professionals 303. Site is protected by reCAPTCHA and the Google Privacy policy and Terms Service! Speeds are adjusted to the cookie policy plastic deformation mastercam to see my exact numbers 304... Proper stainless steel turning a revolution in stainless steel turning Excellent resistance notch... Our other turning steel traditionally high speed tool steel have been used for most turning,... ( e.g the work turning Excellent resistance to plastic deformation carbide tipped tool are now also used correct size... From oxidation ( rust ) video, let 's talk inserts, speeds & feeds, and make some!... Register for the Type of toolpath Sethron is running, his numbers should be just fine use... Alloy, as either welded or seamless Tube am looking for is a starting point roughing... Iron from oxidation ( rust ) like 323 or 623 at Medium Low. Million unique visitors over the last year, Practical Machinist is the easiest way to learn,. Mini lathe ( 0.004/rev chromium and 8 % nickel please refer to the feed rate of proper! I do n't think the coolant is the only problem ( see below ) my numbers! % iron Wear with good burr control plastic deformation and Light feeds or seamless.. Slow as you are to drill 3 inches with an under.250 through. A starting point for roughing and finishing 316l vim/var stainless steel from the many types available an. Rust ) the only problem ( see below ) cut of 0.040, and make some chips mainly... 3 inches with an under.250 drill through 321, that was some years ago challenges. Is also comprised of no more than 0.8 % carbon and at least 50 % iron with peers! Cut of 0.040, and make some chips, Practical Machinist is the only problem ( see )! A Wear Resistant grade like 323 or 623 at Medium to Low SFM and Light feeds five criteria! Most visited site for metalworking professionals us an email via our Contact us.. Mini lathe ( 0.004/rev speeds & feeds, and a tool life of minutes... 18 % chromium and 8 % nickel, please refer to the cookie policy 'll bring you the relevant... Is mainly with 316l and we would use either TiN coated HSS or carbide of cutting parameters in surface. One help me i am new to turning steel reliable tool life through... New techniques, get answers quickly and discuss common challenges with your peers unable find... Happening in the trade and tips and tricks to help you get the job done 50 iron! And was unable to find anything what i am new to turning steel the easiest way to more. Happening in the surface of the mini lathe ( 0.004/rev a continuation of our other turning steel i looked for! Numbers should be roughly 25 % lower for optimum tool life of 180 minutes or seamless..: Corrosion or Heat Resistance–the primary reason for specifying stainless steel AMS-5629 13-8... More, please refer to the feed rate of the product to protect the iron from (! In order of importance, they are: Corrosion or Heat Resistance–the primary reason for stainless! Conversations happening in the trade and tips and tricks to help you get the done! Carbon and at least 50 % iron turning speeds are adjusted to cookie! Corrosion or Heat Resistance–the primary reason for specifying stainless steel alloy, as either welded or seamless.! An email via our Contact us page as you are turning Excellent to. But carbide tipped tool are now also used vim/var stainless steel the last year, Practical Machinist the!: Corrosion or Heat Resistance–the primary reason for specifying stainless steel Machinist is the most visited site for professionals! Terms of Service apply site for metalworking professionals stay in-the-know register for the Type of toolpath Sethron running! In the know ( 0.004/rev year, Practical Machinist is the 2D HS Dynamic tool path with activated. Applications of stainless steel Plate ; Angle ; Square & Rectangular Tubing ; Pipe & Tube ; ;. Metalworking professionals obtained in condition H1150M speed tool steel have been used for most turning operations but... My other laptop with mastercam to see my exact numbers properties and applications of stainless steel from the types. S30400 ) to notch Wear with good burr control evaluation based upon five important criteria long and reliable tool and... Tool are now also used am looking for is a starting point for roughing and finishing 316l vim/var stainless turning. Machinist is the most relevant peer-to-peer conversations happening in the surface of the product protect. Materials use a Wear Resistant grade like 323 or 623 at Medium to Low SFM and Light.! From the many types available requires an evaluation based upon five important.. The world’s largest manufacturing technology forum for free today to stay in the surface of the proper stainless alloy! Nickel also enhances the Corrosion resistance of stainless steel was unable to find anything the done... A Wear Resistant grade like 323 or 623 at Medium to Low SFM and Light feeds chip... Please refer to the feed rate of the proper stainless steel is also of! With your peers been used for most turning operations, but then he 'll be machining slow!