Periodically add more oil drops, until you have drilled completely through the stainless steel. Its recommended to place a few drops of cutting oil on the surface of the stainless steel before beginning to drill. Due to generated extreme heat, cutters quickly become dull or softened. Thats why the tool steel of the twist drill must be made of HSS-Co 5 (5 cobalt. A specially sharpened 130 tip and progressive geometry in the diameter of. Stainless steel is a very hard material and therefore difficult to cut. During drilling through stainless steel heat is absorbed into hole cutters. A DIN338 HSS drill bit for stainless steel. Drill swarf should come off in long spirals, not small chips.Ĭoolant is used to keep cutter cool. High-speed steel tools can be used on stainless steel, but shorter drills are the most effective as they are less susceptible to deflection. When they are gold or blue, the drilling machine is running too fast. The trick is to use slow rpm and more feed pressure than is used with steel.Īnnoying, high squealing sound means that rpm is too fast. If there is a possibility to set the rpm’s for stainless is usually about 50% less than mild steel. It is recommended to use an HSS bit that is. Set the right rpm and keep an eye on chips Carbide Hole Cutter Drill Bit for Stainless Steel Alloy 28mm, Carbide Hole Cutter Drill Bit for Stainless Steel Alloy Officially Licensed Shop Online Free. HSS or High-Speed-Steel bits are designed for use on stainless steel and can be used for hand and machine drilling. Harder, stronger, and more wear resistant than cobalt steel, solid-carbide bits maintain their sharp edges longer. That damage the material or the drill bit.Ģ. Carbide Drill Bits for Stainless Steel and Nickel. These are an important factors in drilling hard materials because the friction of metal against metal can produce high temperatures. Sintered and finished carbide has a combination of compressive strength, extreme hot hardness at high temperatures, and resistance to abrasion, corrosion, and thermal shock. Thanks to their properties they can easily cut through stainless steel without damaging the surface. Large Diameter Tapcons Blue Tapcon Screws Stainless Steel Tapcons Bolthold Asphalt Anchors. The best drill bit to drill hardened steel is Tungsten Carbide Tipped hole saw cutters. Drill and 13/64ths drill bit (could use 7/32nds) 6. Despite their primary use for metal, they can also be used for softer materials. However, they do contain a bit of cobalt, which is where they get their name from. They are not made of pure cobalt, which we will discuss in-depth shortly. To systematize knowledge before drilling stainless steel it’s worth remembering three important tips: Cobalt drill bits are designed for cutting through all sorts of metal, including stainless steel and cast iron. Summing up the topic, right method can make a real difference in how smoothly operation goes. Hardened Steel Cobalt Drill Bits (Imperial) TCT Drill Bits (Metric) TCT Drill Bits (Imperial) HSS Titanium Drill Bits (Imperial) Cobalt Stub Drill Bits.
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