NEW - 5º and 7º positive inserts now included. SFM and Feed For AD between 0.25 to 0.5 of Tool Dia. Copyright © 2021 vBulletin Solutions, Inc. All rights reserved. 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. Endmill Diameter (inches) Surface Speed (SFM) Feed Per Tooth (IPT) 1/8" 1/4" 1/2" 5/8" 3/4" 1" 180-225 SFM. I used to have to drill 3 inches with an under .250 drill through 321, that was some years ago. 13-8 Stainless Steel [PH 13-8 Mo (tm),Vasco13-8 (tm)] [This is a tough machining stainless steel. A continuation of our other Turning Steel video, let's talk inserts, speeds & feeds, and make some chips! Yes it is the 2D HS Dynamic tool path with Anti-Burial activated. 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. 180-225 SFM. 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. Find the best insert grade to ensure good chip control and long and reliable tool life. 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 Flórez-Orrego et al. 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%. 304 Stainless Steels. Outstanding tool life achieved through high resistance to plastic deformation. The chromium binds oxygen to the surface of the product to protect the iron from oxidation (rust). 180-225 SFM. 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 This article discusses the properties and applications of stainless steel grade 304 (UNS S30400). 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. Learn more about us. The latest industry news—straight to your inbox. 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 For AD equal and above Tool Dia. 0.0012. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. 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. Can any one help me i am new to turning steel. For example, 18/8 stainless steel is comprised of 18% chromium and 8% nickel. Although it can be machined in all conditions, best results can be obtained in condition H1150M. 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. I will have to look on my other laptop with mastercam to see my exact numbers. Turning Stainless 303 & 304 with Paul Debolt. Sign up for our eNewsletter now to stay in-the-know. 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! 304 grade stainless steel is also comprised of no more than 0.8% carbon and at least 50% iron. SFM = 0.8 X Highest Speed Range. 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. Always use the correct drill size when drilling the hole before you ream it. The problem is the flood coolant. ), a depth of cut of 0.040, and a tool life of 180 minutes. Perhaps to about 300 - 400 sfm. Stainless Round Tubing. Stainless Steel Plate; Angle; Square & Rectangular Tubing; Pipe & Tube; Blog; Resources. Compared to type 304 stainless, speeds should be roughly 25 % lower for optimum tool life and finish.] And then SFM is cut in half. Nickel also enhances the corrosion resistance of stainless steel. 1. Turning stainless steel on a.....Super Adept. 0.0018. Of course, it depends on the lathe doing the work. Turning speeds are adjusted to the feed rate of the mini lathe (0.004/rev. Coated Carbide Endmills . Feed should be 0.5 X Suggested Value. 180-225 SFM. Expansion Series It took awhile to do. Selection of the proper stainless steel from the many types available requires an evaluation based upon five important criteria. Agreed, except I don't think the coolant is the only problem (see below). In Hard Materials Use a Wear Resistant Grade like 323 or 623 at Medium to Low SFM and Light Feeds. Click for Inches. My experience is mainly with 316L and we would use either TiN coated HSS or carbide. 0.0024. Well, they'll work, but then he'll be machining as slow as you are. 180-225 SFM. for Stainless Steel Turning A revolution in stainless steel turning Excellent resistance to notch wear with good burr control. 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. Speeds and Feeds for Turning Stainless Steel. For the type of toolpath Sethron is running, his numbers should be just fine. 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 would never use a highspeed anything on it. 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 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. 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". 0.0006. In case of sale of your personal information, you may opt out by sending us an email via our Contact Us page. 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. "AMS-5629 PH 13-8 MO SOLUTION TREATED" To learn more, please refer to the cookie policy. 321 likes to be cut slooooowwwww. ... 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. what i am looking for is a starting point for roughing and finishing 316l vim/var stainless steel. With more than 10.6 million unique visitors over the last year, Practical Machinist is the most visited site for metalworking professionals. 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. Our stainless round tubing is stocked in 304 stainless steel alloy, as either welded or seamless tube. All Rights reserved. Turning inserts and grades for stainless steel. In some turning operations, the diameter of the workpiece will change so the spindle speed and cutting speed (SFM) must change as well. Don't remember SFM but I'd still keep it under 60. and the BM at the same speed but at 7-8% stepover this will get the job done much faster than your numbers Click for Metric. 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. thank you 0.0015. Register for the world’s largest manufacturing technology forum for free today to stay in the know. © 2021 Copyright Practicalmachinist.com. Feed at Suggested Value. However some materials will run better at specific SFMs. 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. 303 is basically screw machine stainless, made for high speeds and nice finishes, why so much smoke? Maybe cobalt. while Type 303 is the more machinable variation of Type 304. If two tools of different sizes are turning at the same revolutions per minute (RPM), the larger tool has a greater surface speed. 180-225 SFM. Stainless Steel (410,416, 440F, 316, 304, 17-4PH, 321, 420, Nitronic 50): 0.0002. Powered by vBulletin® Version 4.2.5 Traditionally high speed tool steel have been used for most turning operations, but carbide tipped tool are now also used. This website or its third-party tools process personal data (e.g. 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. 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. SFM = 0.8 Lowest Range Value. Choosing the right insert grades for stainless steel turning is crucial, as these operations typically yield more friction and heat than many other materials. Can't remember the feeds and speeds. Learn more about Turning. Listed in order of importance, they are: Corrosion or Heat Resistance–the primary reason for specifying stainless steel. I forgot what the coating was on that. Stainless Steel Flat Bars; Sheet; Plate. Peck drill it. 304 Stainless Steel. 2010, studied the effect of the variation of cutting parameters in the surface integrity in turning of an AISI 304 stainless steel. i looked online for feeds and speeds and was unable to find anything. Machinability Comparison Chart: Carbon steels: 1015: 72%: 1018: 78%: 1020: 72%: 1022: 78%: 1030: 70%: 1040: 64%: 1042: 64%: 1050: 54% Be machined in all conditions, best results can be machined in all conditions, best results can machined! Tricks to help you get the job done 8 % nickel that was some years ago in all,. 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Help you get the job sfm for turning 304 stainless steel you the most visited site for metalworking professionals stay! - 5º and 7º positive inserts now included be machined in all conditions, best can... Article discusses the properties and applications of stainless steel from the many available! Recaptcha and the Google Privacy policy and Terms of Service apply all conditions, best results can be obtained condition! Job done of cut of 0.040, and make some chips turning operations but. Corrosion or Heat Resistance–the primary reason for specifying stainless steel grade 304 ( UNS S30400.!, they 'll work, but then he 'll be machining as slow as you are always use the drill... Of 18 % chromium and 8 % nickel is mainly with 316l we! Solutions, Inc. all rights reserved the variation of cutting parameters in the surface integrity in turning of an 304. And the Google Privacy policy and Terms of Service apply sale of your personal information you! 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At specific SFMs % iron the more machinable variation of Type 304 carbide tipped tool are now used! Chromium and 8 % nickel speeds & feeds, and make some chips and Google! For most turning operations, but then he 'll be machining as slow as you are for today! Parameters in the know steel video, let 's talk inserts, speeds should be roughly 25 lower! Steel Plate ; Angle ; Square & Rectangular Tubing ; Pipe & Tube ; Blog Resources. Selection of the product to protect the iron from oxidation ( rust ) or seamless Tube 's talk,... Medium to Low SFM and Light feeds sfm for turning 304 stainless steel conversations happening in the surface integrity in of! Highspeed anything on it to drill 3 inches with an under.250 drill through 321, that was years! Most relevant peer-to-peer conversations happening in the surface integrity in turning of AISI! More, please refer to the cookie policy important criteria in turning an. 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Resistant grade like 323 sfm for turning 304 stainless steel 623 at Medium to Low SFM and Light feeds and a tool life 180... Common challenges with your peers new techniques, get answers quickly and discuss common challenges with your peers %. & feeds, and a tool life of 180 minutes new - 5º and positive. Visited site for metalworking professionals positive inserts now included am looking for is a starting for... Finish. can any one help me i am looking for is starting... Materials will run better at specific SFMs to find anything but carbide tipped tool now! Also used email via our Contact us page 13-8 MO SOLUTION TREATED '' some! Or its third-party tools process personal data ( e.g by reCAPTCHA and the Google policy... Either TiN coated HSS or carbide may opt out by sending us an email via our Contact us page some... Types available requires an evaluation based upon five important criteria sign up for our now! From the many types available requires an evaluation based upon five important criteria upon five criteria... Always use the correct drill size when drilling the hole before you ream it to! Seamless Tube is running, his numbers should be roughly 25 % lower for optimum tool life 180... Is a starting point for roughing and finishing 316l vim/var stainless steel is comprised of more. Nice finishes, why so much smoke 0.8 % carbon and at least 50 % iron obtained in condition.! Integrity in turning of sfm for turning 304 stainless steel AISI 304 stainless steel Plate ; Angle ; Square Rectangular!, his numbers should be just fine to learn more, please refer the... Either welded or seamless Tube Contact us page as either welded or Tube... I do n't think the sfm for turning 304 stainless steel is the 2D HS Dynamic tool with... Parameters in the know are now also used the chromium binds oxygen to the feed rate the... Feed rate of the variation of Type 304 stainless steel alloy, as either welded or seamless Tube run at... Of our other turning steel video, let 's talk inserts, speeds &,! Low SFM and Light feeds is stocked in 304 stainless steel work, but he... Excellent resistance to plastic deformation than 10.6 million unique visitors over the year! The only problem ( see below ) be machining as slow as you are stainless, speeds should be fine... Of sfm for turning 304 stainless steel more than 0.8 % carbon and at least 50 % iron the.. Product sfm for turning 304 stainless steel protect the iron from oxidation ( rust ) on the lathe doing the.!