Nitronic60 Helical Wire Inserts Stainless Steel Wire UNS S21800 / 218 Alloy
Professional supplier of Nitronic 6 0 wire thread insert raw material wire, high-silicon, high-manganese nitrogen austenitic stainless steel with excellent wear resistance and galling performance.
Material Overview
Nitronic60 (UNS S21800 / 218 alloy) is a high-silicon, high-manganese nitrogen austenitic stainless steel wire specifically engineered for helical insert manufacturing. With exceptional wear resistance, galling resistance, and corrosion resistance, this alloy is the ideal raw material for producing stainless steel helical inserts.
Nitronic60 alloy wire is produced via vacuum induction melting, followed by multi-pass cold drawing and aging treatment to ensure uniform microstructure and consistent mechanical properties. The wire features a high-quality surface finish with dimensional accuracy up to ±0.005mm, meeting the stringent requirements for precision helical thread inserts. Compared to standard 304/316 stainless steel, Nitronic60 offers 3 times better wear resistance and galling performance.
Chemical Composition and Mechanical Properties
Chemical Composition (by weight %) of Nitronic 60 Wire for Helicoil Inserts
| Element | Content Range |
|---|---|
| Cr | 16.0-18.0 |
| Hi | 8.0-9.0 |
| Mn | 7.0-9.0 |
| Yes | 3.5-4.5 |
| N | 0.08-0.18 |
| C | ≤0.10 |
| Fe | Remaining |
Mechanical Properties of Helicoil® Inserts for Nitronic 60 Wire
Tensile Strength
≥655 MPa
Yield Strength
≥345 MPa
Elongation
≥35%
Density
7.75 g/cm³
resistivity
0.982 μΩ·m
Available Wire Specifications
Wire diameter range
0.08mm - 3.0mm
Delivery Status
Hard-drawn (cold-drawn) / Annealed
Packaging Format
Coiled / Straight (Cut-to-Length)
Execution Standard
ASTM A276, AMS 5848, GB/T 1220
Core Product Advantages
Excellent wear and anti-seizure performance
High-silicon, high-manganese, and nitrogen composition delivers exceptional wear resistance and anti-seizure properties, ideal for friction applications such as wire thread inserts.
Non-magnetic
Completely non-magnetic; ideal for precision instruments and electronic devices sensitive to magnetic fields.
Excellent corrosion resistance
Austenitic stainless steel offers excellent resistance to acid and alkali corrosion, making it suitable for various media environments.
High dimensional accuracy
Wire diameter tolerance is controlled within ±0.005mm, meeting the requirements for precision wire thread insert manufacturing.
Industries
- Stainless Steel Wire Thread Insert Raw Material Manufacturing
- Alloy wire for threaded fasteners
- Bolts, nuts, and studs for high-temperature and corrosive environments
- Fasteners for Aerospace, Automotive, and Machinery Industries
Processing & Delivery
Complementary Services
- Wire straightening
- Custom Slitting to Length
- Provide 3.1 material certification
- Technical Support & Material Selection Consultation
Delivery Timeline
Standard specifications in stock; ships in 3-5 business days. Custom special specifications require production; lead time is 7-15 business days. Nationwide delivery supported; expedited service available.
Frequently Asked Questions (FAQ)
Why is Nitronic60 wire suitable for helical inserts?
Nitronic60 (UNS S21800) contains 3.5-4.5% silicon and 7-9% manganese. This high-silicon, high-manganese composition delivers exceptional wear resistance and galling resistance. During helical coil insert installation and use, it effectively resists thread friction, wear, and galling, extending insert service life by over 3 times. Additionally, its non-magnetic properties and excellent corrosion resistance meet the stringent requirements for fasteners in aerospace, automotive, and other industries.
What is the difference between Nitronic 60 wire and standard 304 stainless steel wire?
The main differences between Nitronic60 and 304 stainless steel are: 1) Composition: Nitronic60 contains 3.5-4.5% silicon, 7-9% manganese, and 0.08-0.18% nitrogen, whereas 304 does not contain these elements; 2) Performance: Nitronic60 has more than 3 times the wear resistance of 304 and exhibits significantly better galling resistance compared to 304; 3) Application: Nitronic60 is specifically designed for high-friction applications such as wire thread inserts, while 304 is suitable for general corrosion-resistant environments. For wire thread insert manufacturing, Nitronic60 is strongly recommended over 304.
What is the minimum wire diameter available for Nitronic 60 alloy?
Nitronic60 wire is available with a minimum diameter of 0.08mm, meeting the manufacturing requirements for precision helical inserts and micro springs. Diameter tolerance is controlled within ±0.005mm, and surface finish achieves Ra ≤ 0.4 μm, ensuring accurate installation and optimal performance of helical inserts.
How is the anti-seize performance of Nitronic60 wire tested?
The galling resistance of Nitronic60 wire is typically evaluated using threaded fastener friction tests. A thread insert made from Nitronic60 wire is mated with a standard bolt, and specified tightening and loosening torques are applied to measure the coefficient of friction and galling torque. The coefficient of friction for Nitronic60 is typically lower than 0.15, and its galling torque is more than 50% lower than that of 304 stainless steel, demonstrating its superior galling resistance.
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