Surprecision T9A High Carbon Music Wire (Piano Wire), 2mm (0.079") x 10m (32.81ft), ASTM A228 Spring Temper for Precision Springs, Fine Mechanical Applications, and Instrument Strings

Surprecision T9A High Carbon Music Wire (Piano Wire), 2mm (0.079") x 10m (32.81ft), ASTM A228 Spring Temper for Precision Springs, Fine Mechanical Applications, and Instrument Strings

• PRECISION HIGH-CARBON MUSIC WIRE — Manufactured from T9A-grade high carbon steel in strict accordance with ASTM A228 (Piano Wire) standards. Delivers exceptional tensile strength, uniform spring temper, and a bright, smooth surface finish. The highest-quality spring wire available for applications where performance and reliability are non-negotiable.
• SUPERIOR TENSILE STRENGTH AND ELASTIC LIMIT — Achieves 15-25% higher tensile strength than standard hard-drawn spring wire at equivalent diameters. Maintains spring force under sustained deflection with minimal permanent set or load loss. Ideal for precision springs, timing mechanisms, and constant-force applications requiring millions of reliable cycles.
• ULTRA-SMOOTH SURFACE FOR FATIGUE RESISTANCE — Cold drawn to tight diameter tolerances with a bright, smooth surface that is free of scale, pits, and surface imperfections. The superior surface finish reduces stress concentration points, extending fatigue life and improving consistency in high-cycle and close-tolerance applications.
• EXTENDED LENGTHS FOR PRODUCTION EFFICIENCY — Available in 10-meter (32.81 ft) lengths for diameters 0.15–2.0 mm, and 5-meter (16.40 ft) lengths for diameters 2.2–2.5 mm. Each rod provides sufficient material for multi-spring production runs, prototyping, instrument string making, and coil winding without mid-run interruption.
• VERSATILE PRECISION APPLICATIONS — Suitable for compression/extension/torsion springs, musical instrument strings, cutting and piercing tools, medical device components, model engineering, needle stock, valve springs, and fine mechanical assemblies. Supplied with light residual oil from the drawing process for short-term corrosion protection during storage and handling.