![]() In hardened condition, expect high tool wear due to abrasion and thermal load. High hardness and tensile strength can lead to very high cutting forces. Machining typically happens prior to heat treatment and are still moderate to machine. In this same category fall Precipitation-Hardening or PH Stainless Steels, most commonly 15-5PH or 17-4PH. If heat treatment is a needed characteristic, Carbon (0,1 – 0,45%) is added and converts Ferritic to Martensitic Stainless Steels. Similar machining parameters to unalloyed steels of the same strength can be applied. As they are not thermally hardenable, Ferritic Stainless Steels are relatively easy to machine. ![]() The outer skin of the refrigerator in your kitchen is likely made from a ferritic stainless steel. Although not commonly used in the metal cutting industry, they are far more common in metal forming because of the added feature of magnetism without corrosion. It also helps us to understand why certain materials, having different main components, can behave similarly.įerritic Stainless Steels are the base combination of iron and the already mentioned ≥12% chromium. Both values tell what material characteristics to expect during machining (or welding). ![]() The so called Schaeffler – De-Long Diagram and calculation provides a nickel and chrome equivalent to position the material into its respective area of behavior. Here, it is actually helpful to look into the welding industry for help. Therefore, it is key to know what Stainless Steel you are about to machine. Martensitic (including perception hardening steels)Įach of the Stainless Steel groups behave totally different. Other alloys may also be added to create a material with differences in structure, needed characteristics of magnetism, hardness, resistance to high temperatures, or the possibility to high polish. To get stainless steel one only needs to add enough of the basic element chromium to the iron base, as a minimum 10.5% but typically above 12%. Inox comes from the French word inoxydable, which simply means not oxidable. Stainless Steel is actually a relatively young material group and sometimes referred to as INOX material. For Stainless Steel – Milling, Drilling & Tapping.īy Product manager of round tools & tapping and thread milling in EMEA ![]()
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