Steel Wire for Musical Instruments (YB/T5218-1993)
Steel Wire for Musical Instruments is a classification for steel wire specifically designed for the manufacture of musical instruments. This grade of steel wire has been developed to ensure that the highest standards of accuracy and quality are met for use in the manufacture of stringed instruments. These standards are described in YB/T5218-1993.
The main property of Steel Wire for Musical Instruments is that it has a uniformity in shape and size. This is essential to ensure consistent mechanical properties of the strings under varying amounts of tension. The steel wire has a tolerance of approximately 0.003 mm of the nominal set size. Additionally, the mechanical strength of the steel must also be uniform and consistent. YB/T5218-1993 specifies that the maximum surface roughness of the steel wire should not exceed 0.8 µm per adjoining surface.
Steel Wire for Musical Instruments is typically produced in a variety of diameters. The most common diameters range from 0.05mm up to 4.5mm. In terms of tensile strength, the steel wire may vary between 400 Mat tensile strength and 3000 MPa tensile strength. The grade of steel typically used is a low alloy steel with high tensile strength and specific properties to enhance corrosion resistance.
In addition to the requirement for steel wire to have a uniform shape and mechanical properties, Steel Wire for Musical Instruments also requires to be treated with a surface coating to protect from corrosion. The common coating used is zinc or a zinc alloy.
