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MATERIALS FOR DISC SPRINGS We maintain the largest raw material inventory in the world for the manufacturing of Key Bellevilles, Inc. Disc Springs. We feel this gives our customers a wide choice of materials that are readily available. Special attention, however, should be given to the selection of proper material for your application and environment. Every effort will be made to provide the material you request. TECHNICAL SPECIFICATIONS
SPECIAL CHARACTERISTICS OF SOME Inconel X-750: This is an age hardenable nickel chrome alloy. This material is very tough and has a low yield point. The endurance qualities are excellent with good fatigue resistance over entire defelction range. This material is very good heat and corrosion resistant as well as being anti-magnetic. Inconel 718: For industrial applications that demand good strength, high resistance to corrosion, and excellent resistance to oxidation at high temperatures. Beryllium Copper: An outstanding spring material. It is a hardenable alloy with strength properties comparable to steels. Beryllium copper is remarkable for its resistance to many media as well as its ability to work at very low temperatures. Phosphor Bronze: An alloy of copper and tin, which achieves its spring characteristics through cold working. The strength values achieved are lower than normal spring steels. Phosphor bronze is corrosion resistant and anti-magnetic. 17.7 PH A precipitation hardening grade of stainless. Highly corrosion resistant, highly immune to intergranular cracking and sulphide pitting. Combined advantages of high strength and corrosion resistance. *17-7 Steel is subject to spontaneous fracture when stressed and exposed to some corrosive environments. 301, 302, 316 Series Stainless: Chromium-nickel austentic stainless steels. These steels do not harden by heat treatment, but can be rolled hard. The steels are tough, ductile and exhibit trace magnetism due to cold working for strength. 410 Stainless: General utility chromium stainless steel. This steel is ferromagnetic, air hardening and highly corrosion resistant. 1075, 1095: High carbon steel, hardenable to Rockwell C40-50 (1095 Grade). These steels are thus suitable for thin Belleville disc springs. 5160: Straight chromium steels, hard, wear resistant, deep hardening steel with increased elastic limit. 6150: Strong, tough, hard, chrome vanadium steel. Increased tensile strength without lowering the ductility. Carpenter 455: Stainless steel combining high tensile strength with good cryogenic properties. Titanium: Ti6AJ-4 Forms a spontaneous oxide by being exposed to oxygen in air or water. Ti 6-4 is highly corrosion resistant to exposures in aqueous solutions containing chlorides, like sea water or oxidizing acids and alkalis. Conditions to avoid are strongly reducing acids, dry chlorine gas, solutions with no water like anhydrous methanol or ethanol. Solutions containing greater then just a few percent water are safe to use around titanium as the protective oxide layer can readily form. For more information contact Key Bellevilles. |
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