Our Products Products
Sakai Wire Co., Ltd. specializes in producing Fine and Ultra-Fine Wires made from Stainless Steel, Nickel alloys, Titanium, and other materials.
Product Categories
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■ Hard Drawn Wire
Non-Coated, Bright-finish Hard-drawn wire supplied in Spool-wound form or as Coil bundles.
| Spool Type | Size: φ0.011mm – φ0.65mm |
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| Coil Type | Size: φ0.30mm – φ0.65mm |
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■ Soft Annealed Wire
Soft, High-elongation Bright-finish Annealed Wire.
| Spool Type | Size: φ0.060mm – φ0.65mm |
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■ Stainless Steel Wire
We support a wide range of Stainless Steel Grades to meet various application requirements.
| Austenitic | Grade: SUS304, 304L, 316, 316L, 316N, 310S, 321 & others (Upon request: 304V, 316LVM & others) |
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| Ferritic | Grade: SUS430 & others |
| Austenitic–Ferritic (Duplex Stainless Steel) | Grade: SUS329J1 & others |
| ★ Soft Bright-Annealed Stainless Steel Wire | In accordance with the JIS G 4309 standard. |
| ★ Non-Coated, Bright-finish Hard-drawn Stainless Steel Wire | In accordance with the JIS G 4314 standard. Applications: for Rope for Spring for Precision spring for Braiding for Medical & others |
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■ Pre-Straightened Stainless Steel Wire for Springs
Hard-drawn Stainless Steel Wire designed for applications requiring High Straightness.
| Standard | In accordance with the JIS G 4314 standard. |
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| Condition | 3/4HT (WPDS), 4/4HT (WPBS) & others (Upon request: High Tensile Strength) |
| Types | Straightness Classification (Arc Height / Length) Various types are available upon request. |
| Notes | Depending on the Straightness level, Spool-wound or Cut-to-length Wire may be restricted. Please check in advance. |
■ Ultra-Fine Stainless Steel Wire for Springs
Ultra-Fine Hard-drawn Stainless Steel Wire used in Precision Springs, Braiding, Medical Devices, and other applications.
| Spool Type | Size: φ0.011mm – φ0.060mm |
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| Upon request |
WPB-SRA — Stress Relief finish with High Tension wire (Type A) for Grade 304 / 304V WPB-SRB — Stress Relief finish with Super High Tension wire (Type B) for Grade 304 / 304V WPB-SRC — Stress Relief finish with Normal Tension wire (Type C) for Grade 304 / 304V WPA-SRA — Stress Relief finish with High Tension wire (Type A) for Grade 316L / 316LVM WPA-SRB — Stress Relief finish with Super High Tension wire (Type B) for Grade 316L / 316LVM WPA-SRC — Stress Relief finish with Normal Tension wire (Type C) for Grade 316L / 316LVM |
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| Spool Type | Size: φ0.011mm – φ0.060mm |
■ Nickel and Nickel Alloy Wires
Available for Pure Nickel and Copper-Nickel Alloy applications.
| Grade | NW2200 (Ni200, Ni201), NW4400 (Alloy400) |
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| Standard | In accordance with the JIS H 4554 standard. |
■ Corrosion-Resisting and Heat-Resisting Super Alloy Wires
Fe-Ni-based Superalloy Wire designed for applications requiring High Corrosion and Heat Resistance.
| Grade | NCF600 (Alloy600), 601, 625, 825 & others (Upon request) Alloy C-22, C-276 & others (Upon request) |
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| Standard | In accordance with the JIS G 4901 standard. |
■ Nickel-Chromium / Iron-Chromium Alloy Wire for Electrical Heating / Electrical Resistance
Supports Nickel-Chromium and Iron-Chromium Wire for Heating and Resistance applications.
| Grade | NCHW1, NCHW2, FCHW2 & others (Upon request) |
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| Standard | In accordance with the JIS C 2520 standard. |
■ Titanium and Titanium Alloy Wire
Available for Pure Titanium and Titanium Alloy Wire applications.
| Grade | TW270, DAT51 (Beta Titanium Alloy / Ti-22V-4Al) |
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| Standard | In accordance with the JIS H 4670 standard. |
| Finish Condition | With Oxide scale (Black-Oxide surface) or Pickled surface (mechanically Descaled + Pickled) |
■ Ni-Ti Shape Memory Alloy Wire
Alloy Wire designed for applications requiring Shape-Memory properties.
| Grade | KIOKALLOY-R (Daido Steel Co., Ltd.) |
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| Finish Condition | Linear Shape-Memory effect / Superelasticity |
| Standard | In accordance with the JIS H 7107 standard. |
■ Stainless Steel Wire Processed Products
Products include Stranded Wire, Colored Wire, Grease-Filter Elements, MPSR-finished Wire and others.
| Product Types |
Annealed Stranded Wire Colored Wire (with thin Oxide film) Grease-Filter Elements MPSR (Micro Peen Surface Reforming) finished Wire Cut-to-length Straightened Wire (Upon request) |
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Sakai Wire's approach to manufacturing.
Doing our very best for every single wire.
75 years in Nara.
Attentive, precision-focused manufacturing — this is Sakai Wire's strength.
- Ultra-Fine Wire drawing down to φ0.011 mm.
- Prototype and Small-lot production.
- Made to order in 0.001 mm increments.
Frequently Asked Questions
Q1. What is the minimum wire diameter you can produce?
A. We have delivered φ0.011 mm wire to a customer (March 2026).
※Applicable to stainless steel wire — ■Grade: SUS304, hard drawn (non-annealed).
Q2. Do you accept prototype or small-lot orders?
A. Yes, we do. As a made-to-order manufacturer, we handle prototype production even in small quantities, including 0.001 mm-increment diameter specifications that other companies have found difficult to support.
Q3. Do you handle direct overseas transactions and exports?
A. Yes, we do. We have experience with direct transactions and shipments to China, Southeast Asia, the United States, and other regions, both directly and through trading companies. We also support inquiries in English.
Contact us
We welcome consultations even before your requirements are fully defined.
Please feel free to consult with us even for cases other companies have turned away.