Piano Wire
We focus on supplying high-quality Piano Wire, strictly complying with the JIS G 3522 international standard. We directly import premium SWRS 82A–87A high-carbon steel wire rods from top steel mills in Japan (Nippon Steel, Kobe Steel), Korea, and Taiwan.
Piano wire is regarded as the “crown jewel” among metal wire materials. Through a special lead patenting process and precision cold drawing, it achieves extremely high tensile strength and toughness. The piano wire supplied by Nancheng not only passes SGS
testing, but also features excellent surface finish and roundness, making it the only preferred choice for producing high-fatigue-life springs, such as engine valve springs and precision instrument springs.
FEATURES
Piano Wire Features｜High Fatigue Spring Wire Supplier
NAN CHENG supplies high-quality Piano Wire manufactured in compliance with JIS G 3522 and CNS 3697 standards. Produced from premium SWRS high-carbon steel wire rods imported from Japan, Korea and Taiwan, piano wire offers exceptional tensile strength, fatigue resistance and dimensional stability for precision spring manufacturing.
- Excellent fatigue resistance: Suitable for springs and components subjected to continuous dynamic loading.
- High tensile strength and elasticity: Provides stable rebound performance for precision spring applications.
- Superior formability: Stable surface quality and roundness support high-speed coiling and automated spring forming.
- SWP-A and SWP-B grades available: Suitable for different fatigue life and load requirements.
- Surface treatment optimization: Phosphate coated surface improves lubrication and reduces wire breakage during processing.
Supply Capability:
✔ Wire diameter range: Ø0.15 mm – Ø8.0 mm
✔ SWP-A / SWP-B grades available
✔ Coil, carrier spool and cut-to-length supply
✔ Stable inventory and repeat supply support
✔ Suitable for spring manufacturers in Japan, Korea and Southeast Asia
✔ Wire diameter range: Ø0.15 mm – Ø8.0 mm
✔ SWP-A / SWP-B grades available
✔ Coil, carrier spool and cut-to-length supply
✔ Stable inventory and repeat supply support
✔ Suitable for spring manufacturers in Japan, Korea and Southeast Asia
Please provide your required diameter, grade or application. NAN CHENG can assist with material selection and quotation support.
Specifications
Piano Wire Specifications｜JIS G3522 Standard
| Item | Specification Details |
| International Standard | JIS G 3522 / CNS 3697 |
| Steel Grade | SWRS 82A, SWRS 82B, SWRS 87A, SWRS 87B |
| Wire Diameter | Ø0.15 mm – Ø8.0 mm |
| Strength Grades | SWP-A / SWP-B |
| Surface Condition | Phosphate coated, bright finish |
| Origin | Japan, Korea, Taiwan |
| Supply Form | Coil, carrier spool, cut-to-length |
Grade Selection Guide:
SWP-A: General-purpose grade for mechanical springs, hardware and industrial applications.
SWP-B: Higher tensile strength grade for valve springs, clutch springs and high-fatigue applications.
SWP-A: General-purpose grade for mechanical springs, hardware and industrial applications.
SWP-B: Higher tensile strength grade for valve springs, clutch springs and high-fatigue applications.
Quality Advantages:
✔ Excellent surface finish and roundness
✔ Stable fatigue performance
✔ Suitable for precision spring manufacturing
✔ Excellent surface finish and roundness
✔ Stable fatigue performance
✔ Suitable for precision spring manufacturing
Applications
Piano Wire Applications｜Precision Springs and High Fatigue Components
Piano Wire is widely used for high-fatigue spring applications requiring excellent elasticity, stable tensile strength and long service life.
- Automotive industry:
Valve springs, clutch springs and fuel injection system springs. - Precision electronics:
Probe springs, keyboard support components and micro-switch contacts. - Industrial hardware:
High-tension extension springs, torsion springs and quick-connect clips. - Other applications:
Musical instrument strings, fishing hooks and model steel wire components.
Piano Wire FAQ
Q: What is Piano Wire?
A: Piano Wire is a high-carbon spring wire with excellent tensile strength and fatigue resistance, commonly used for precision springs and dynamic spring applications.
A: Piano Wire is a high-carbon spring wire with excellent tensile strength and fatigue resistance, commonly used for precision springs and dynamic spring applications.
Q: What is the difference between SWP-A and SWP-B?
A: SWP-A is suitable for general-purpose spring applications, while SWP-B offers higher tensile strength for higher fatigue and dynamic load conditions.
A: SWP-A is suitable for general-purpose spring applications, while SWP-B offers higher tensile strength for higher fatigue and dynamic load conditions.
Q: Is Piano Wire suitable for valve springs?
A: Yes. SWP-B grade is commonly used for valve springs and other high-fatigue spring applications.
A: Yes. SWP-B grade is commonly used for valve springs and other high-fatigue spring applications.
Q: Can NAN CHENG provide custom processing?
A: Yes. NAN CHENG supports straightening, cutting and custom supply requirements based on customer specifications.
A: Yes. NAN CHENG supports straightening, cutting and custom supply requirements based on customer specifications.
Q: How can I request a quotation?
A: Please provide wire diameter, grade, quantity and application details for quotation and material recommendation support.
A: Please provide wire diameter, grade, quantity and application details for quotation and material recommendation support.