Spring Steel Strip

Steel Strip is annealed to:- Soften the strip for improved forming and workability To remove stresses induced during cold rolling, or uneven cooling To remove coarse grain Almost all cold rolled steel strip will have undergone the annealing process, normally prior to a final "skin pass", a final light reduction. Annealing is basically a heat treatment process which involves the heating and controlled cooling ... Read More

Many engineering and smaller manufacturing companies find they need spring steels in smaller quantities, often as little as one strip. This can be difficult to source, as even the traditional stockholders may require a minimum order of 50 kilos or more. We have recognised this problem at BSS and we are able to offer both traditional carbon spring steels and now stainless spring steels in very small quantities, just enough to meet your needs. The grades we can offer in addition ... Read More

In the UK over 90% of cold rolled spring steel sales are in CS70 and CS80 grades. Both grades are part of the BS1449 standard. Both grades are high carbon "spring" steel used in a variety of applications where high tensile strength is required. CS70 is normally supplied in the annealed condition, in which it is suitable for bending, shaping and forming, before heat treatment. Close International equivalents are Din CK67, AISI/SAE 1070 and Euronorm C67S. CS80 is usually ... Read More

Having recognised a “gap” in the steel supply market BSS Steelstrip is now able to offer small quantities of spring steel strip from stock. Whilst steel mills regularly insist on minimum order quantities of up to 5 tons, and stockholders upwards of a ton, we have recognised the need of smaller engineering companies who may require as little as a single sheet to complete a project, or to replace a part in an ageing piece of plant. It can be frustrating and time consuming ... Read More

Spring steels are supplied either hardened or tempered or annealed to allow component manufacture prior to the hardening process. The optimum combination of hardness, strength and toughness is developed throughout the cross section of an engineering product made from steel, by means of hardening and tempering. This treatment consists of heating the work-piece to an appropriate hardening temperature, which is dependant upon the particular steel analysis involved, holding for sufficient time to ensure the whole work-piece is at temperature and then rapidly cooling ... Read More

BSS are pleased to advise that we are now able to offer small quantities of stainless spring steel from stock. Temper rolled Stainless Steel Shim 1.4310 (AISI 301) This Steel has a good corrosion resistance due to a content of 17 % Chromium and 7 % Nickel. A high tensile strength is obtained by cold rolling. Compared to Alloy 1.4301 (AISI 304) a much higher tensile strength of more than 2000 N/mm² can be reached. Because of this, 1.4310 is suitable for stainless feeler ... Read More

Hardness Testing Hardness testing for steel is based upon applying pressure to the steel surface and measuring the depth of the indentation. The three major measurement systems are :- The Brinell hardness test consists in indenting the metal surface with a 10-mm-diameter steel ball at a load of 3,000 kg mass (∼29400 N). For soft metals the load is reduced to 500 kg to avoid too deep an impression, and for very hard metals a tungsten carbide ball is used ... Read More

A few useful spring related Links The institute of Spring technology. UK based unique centre of excellence, offering a wide range of products and services to the spring industry supply chain, as well as non-spring components, including all kinds of spring research. All companies involved in; the manufacture of all spring types, spring end users, spring material, machinery and consumable suppliers, as well as any other company within the industry, both UK and World-Wide, can benefit from our specialist technical services and research facilities. UK Spring ... Read More

Hardening and Tempering is a thermal process that strengthens steel through a controlled heating and cooling process Hardened and tempered steel strip, is used in many applications including saws, cutting tools as well as springs. This process will result in improved mechanical properties and give a tougher more durable product. The hardening process involves heating the steel to above the critical transformation temperature for the given grade and then rapidly cooling. Whilst this process achieves the  highest mechanical strengths and hardness’s, ... Read More

RIZZATO NASTRI S.P.A. is an Italian producer of high quality cold rolled steel strip located close to Venice. The Company is operating since 1946 in the branch of cold rolled steel strips and progressively diversified and specialized in production of steels with high carbon content , alloyed steels , hardened and hardenable steels. Since 1980 the Company is been utilizing the Sendzimir cold rolling mill process increasing more and more its own productive capacity and improving ... Read More