Some considerations related to metal springs are operating temperature, regulatory requirements and corrosion resistance. Compression Springs, also known as coil springs, are open-coiled steel wire in a variety of cross sections and forms for linear applications.

Garter springs that exert an outward force are compression garter springs, while garter springs that act the opposite are tension garter springs. Music wire’s surface is coated with a tin solution during cold working to produce an excellent surface finish for secondary processes such as electroplating. It may be formed in the soft or fairly hard condition and then hardened by a long-time age-hardening heat-treatment to obtain a tensile strength and hardness above Monel and nearly as high as stainless steel. Music wire is used to make small springs subjected to high loads and cyclic conditions, with high temperature music wire used in foundries, heat treating, and refractories where there are extremely hot internal temperatures. Chromium Silicon, ASTM A401: This alloy is used for highly stressed springs that require long life and are subjected to shock loading.It has a low tensile strength and poor spring qualities, but is extensively used in flat stampings and where sharp bends are needed. The cross-section of the spring material is subjected to different types of stresses, mostly combinations of bending and torsional stresses.

These materials have a low or zero thermo-elastic coefficient and therefore do not undergo variations in spring stiffness because of modulus changes due * Trade name of the International Nickel Company. We specialise in the manufacture of compression springs, and with nearly 40 years experience as an 'A' class supplier we supply many original equipment manufacturers in Europe, USA, India and China. High-Carbon Valve Spring Steel (ASTM A230): These are high-carbon steels with uniform quality and temper. It is used in sizes larger than those usually used with Monel, is non-magnetic and can be used in temperatures ranging from −100 to +450 °F at normal working stresses under 45,000 pounds per square inch.

Stainless Type 304, ASTM A313 (18 percent chromium, 8 percent nickel): This material is quite similar to Type 302, but has better bending properties and about 5 percent lower tensile strength. Leaf springs are usually formed into an elliptical, semi-elliptical, or parabolic shape with progressively shorter leaves. It can be formed in the soft or partially hard condition and then hardened by holding it at 1200 °F for 4 hours. These materials have a high electrical resistance and therefore should not be used for conductors of electrical current. A coil spring is an elastic element made of metal or heavy plastic in the form of curls or ringlets of round wire or cord that is wrapped around a cylinder.