JIS G 3521 PDF

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Hard drawn steel wire is made by the special heat treatment and cold drawing process by using high quality high carbon steel wire rods. The usage of the hard drawn steel wire is mainly for the spring of wide general purpose. Hard drawn steel wire A. Tensile strength is same as that of SW-A. Hard drawn steel wire B. Mainly for static load spring.

Tensile strength is same as that of SW-B. Generally, it is 60C. Hard drawn steel wire C. Tensile strength is same as that of SW-C. Generally, it is 80C. Music spring wire is a steel wire with long history that the strength is given by the special heat treatment and cold drawing process by using special high quality high carbon steel wire rods. This process is similar as hard drawn steel wire, but music spring wire is manufactured more politely, and under severe quality control.

Suzuki Metal Industry's music spring wire is used for the spring of various usages in which not only music wire used for the string of a piano or guitar but also much kind of springs which is needed high reliability, and has been received high acclaim from the user in the world.

Piano wires A. Mainly dynamic load spring. Tensile strength that is same as SWP-A. General spring. Piano wires B. Tensile strength that is same as SWP-B. Piano wires V. Valve spring or similar spring. Tensile strength that is same as SWP-V.

Regular Low Carbon Steel Wire. The wire cold drawn from low carbon steel wire rod JIS G and its dimension must be round-shaped. Annealed Low Carbon Steel Wire. Regular low carbon steel wire is softened by annealing and its dimension must be round-shaped. Use coal water for lubricant in drawing and it is suitable for coating and bright but tends to rust.

Use oil for lubricant in drawing and the surface is smoonth than regular low carbon steel wire. Low carbon steel rod is cold drawned and annealed, melting zinc-coated or electric zinc-coated and the dimension must be round-shaped. Low carbon steel rod is cold drawned, melting zinc-coated or electric zinc-coated and the dimension must be round-shaped. Hard drawn steel wire is melting zinc-coated or electric zinc-coated and the dimension must be round-shaped.

Various zinc-coated wires. Preco Z. Zinc-coated wire. Delta Wire. Sun Bright. Nichia Steel Works. Preco N. Other coated wires. Chromate Steel Wire. There are two types colored chromate and unichromate and it is used for guard for high-pressure rubber hose and door lock etc. JFE techno wire Patented. Special delta coating on a hard drawn wire with high wire drawing technique. Wire has gloss surface and very stable anti-errosion.

Steel wire that is alloy coated to hard drawn wire, piano wire Zn-Al. Delta-AZ has zinc erosion and aluminium high anti-erosion combined, it has 2 times higher than high anti-erosion of that of regular zinc-coated. Moreover, temper treatment in high temperature, FeZn alloy does not affect the coating layer and this is superb in heat resistance.

Mac Wire. Hard drawing wire 80C and piano wire have been zinc-coated and afterwards cold drawned. Hard drawn wire of 60C and 80C. Piano wire, SWP, has been conducted nickel-coating and wire drawing. Excellenc in anti-erosin and soldering. SW-C 0. Hard drawn wire 80C and piano wire are conducted zinc-coating and to wire drawing to make the surface finish smooth. Excellence in anti-erosion. Hard drawn wire 80C and piano wire are conducted nickel-coating and to wire drawing to make the surface finish smooth.

Excellence in soldering. Tin-Coated Steel Wire. Hard drawn wire and piano wire are conducted tin-coating. Silver-coated Phosphor Bronze. Phosphor bronze wire CW is conducted silver-coating. Nickel-coated Phosphor Bronze. Phosphor bronze wire CW is conducted nickel-coating. CP Spring Wire. CP spring wire is a kind of cold rolled wire being special coated by copper on thicker corbon steel wire 70C etc.

Mac Wire CP Electrical conductivity copper-coated piano wire. This is Piano Wire for spring with copper-coated by electrical coating method. At this condition, spring molding with low temperature heating will be possible. Copper-coated piano wires are developed to achieve high conductivity. It is equivalent to phosphor bronze wire for spring.

There is no deterioration of electrical conductivity even though the surface of copper-coated wire is discolored. It has superior coiling ability specific to copper-coated and soldering ability. Although the surface of copper-coated wire becomes discolored, it endures 96 hours salt spray test against base material.

It has high anti-corrosion resistance. In spring characteristics, it is superior to phosphor bronze and beryllium copper wires. It enables to become lighter and more compact springs. As a conclusion, it reduces the cost of the product for VA proposal. It does not require copper coating after spring. So it improves the defect like shape variations by after coating, entanglement, spark scratch, hydro-brittleness of the spring and unevenness of copper coating.

It removes the burden of coating failure for contact portion of the spring. At the last stage of coating Au, Ag, Ni to the springs for electrical components, the copper coating as a base material enhances the coating quality. Tin-Coated EF Wire. It is used for condenser and lead wire parts that is used for soldering. Tin-Coated Soft Copper Wire. Tin-coated soft copper wire is flat coated tin wire. Characteristic is same as tin-coated EF wire.

Soldering-Coated Wire. SP Wire. SP wire is developed by Suzuki as super precision electrode wire. High tension piano wire that is very close to brass wires. Oil tempered wire is material for the spring which is given the continuous quench and temper heat-treatment. This oil tempered wire have excellent properties as spring material, and is used as various springs for the automobile such as the valve springs of the engine, the clutch springs, the transmission springs, and the suspension springs.

Suzuki Metal Industry Co. Carbon steel oil tempered wire A for spring. Carbon steel oil tempered wire B for spring. Mainly for dynamic load spring. Silicon chrome steel oil temper wire for spring.

Currently, it is much used for automobile suspension than Si-Mn.

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