Product parameters RoHS compliant, capable of measuring over 76 chemicals and materials, plating thickness type Steel wire production diameter range: wire diameter 0.03mm-12mm Iron wire and copper wire production diameter range: wire diameter 0.5mm-10mm High tensile strength and long service life: 1000000-5000000 times High hardness and good elasticity! Battery springs are easy to solder. Phosphate copper springs have good conductivity It has acid and alkali resistance and high temperature resistance of 1100oC Instructions for Customized Battery Springs Provide necessary parameter information or detailed drawings for springs: product thickness, product width, material (spring material) surface treatment (blackening/galvanizing/nickel plating/electrophoresis/dacromet/baking paint...) Other products generally require complete and detailed drawings to be customized.