Specifications
Surface Treatments
Certifications
- ISO 9001 - 2015 Certified
- PED 2014/68/EC
- NACE MR0175/ISO 15156-2
- NORSOK M-650
- DFAR
- MERKBLATT AD 2000 W2/W7/W10
AMS 5726 — A286 Bar, Wire and Forgings
AMS 5726 is the SAE Aerospace Material Specification covering A286 (UNS S66286) bar, wire, and forgings in solution-treated and precipitation-aged condition. Notable for covering wire alongside bar and forgings, and for a broader hardness acceptance window than AMS 5732 / 5737. Used for aerospace and industrial fastener and component manufacture. See parent A286 AMS / ASTM specifications hub, related A286 round bar, A286 wire and wire rod, forged bar.
Spec Scope & Coverage
AMS 5726 covers A286 bar, wire, and forgings in solution-treated and precipitation-aged condition. Bar diameter 5-100 mm; wire 0.5-12 mm; forgings to drawing. Mill-aged at 1325 °F × 16 hours. Hardness window broader than AMS 5732 — 24-32 HRC accepted, with corresponding tensile range 850-1050 MPa.
A286 Chemical Composition (UNS S66286)
| Element | Min % | Max % | Notes |
|---|---|---|---|
| Iron (Fe) | Balance | Balance | ~53 % typical |
| Nickel (Ni) | 24.0 | 27.0 | Solid-solution stabilizer |
| Chromium (Cr) | 13.5 | 16.0 | Corrosion + oxidation resistance |
| Titanium (Ti) | 1.90 | 2.35 | Gamma-prime former (Ni3Ti) |
| Molybdenum (Mo) | 1.00 | 1.50 | Solid-solution strengthener |
| Vanadium (V) | 0.10 | 0.50 | Carbide stabilizer |
| Aluminium (Al) | 0 | 0.35 | Gamma-prime former (Ni3Al) |
| Boron (B) | 0.001 | 0.010 | Grain-boundary strengthening |
| Carbon (C) | 0 | 0.08 | Per ASTM A453 |
AMS 5726 — A286 Bar, Wire and Forgings — Spec Requirements
| Property | AMS 5726 requirement | Notes |
|---|---|---|
| Form | Bar, wire, forgings | Wire coverage distinguishes from AMS 5731-5737 |
| Wire diameter | 0.5-12 mm | Cold-drawn through progressive dies |
| Heat treatment | Sol-treated + aged | Mill-aged |
| Tensile strength | ≥ 850 MPa | Broader range vs AMS 5732 |
| Yield strength 0.2 % | ≥ 580 MPa | Slightly lower than AMS 5732 minimum |
| Hardness | 24-32 HRC | Broader acceptance window |
| Magnetic permeability | < 1.005 | Per ASTM A342 |
When to Specify AMS 5726 — A286 Bar, Wire and Forgings
- Wire / wire rod manufacture: AMS 5726 covers wire (0.5-12 mm) — used for A286 wire and wire rod manufacture, welding rod raw stock.
- Industrial fastener applications: AMS 5726 broader hardness window (24-32 HRC) suits industrial applications where the stricter AMS 5732 (29-32 HRC) is over-specified.
- Wire-formed springs and clips: A286 wire 1-3 mm diameter for cold-formed A286 springs, snap rings, retaining clips.
- Cold-headed fasteners: AMS 5726 sol+aged bar for cold-heading into hex bolts, SHCS, hex nuts.
- Stricter-tolerance alternative: For tighter hardness window (29-32 HRC), specify AMS 5732 or AMS 5737.
Mechanical Properties per This Spec
| Property | Min value (mill-aged) | Notes |
|---|---|---|
| Tensile strength (MPa) | ≥ 850 | Broader range than AMS 5732 (≥ 895) |
| Yield strength 0.2 % (MPa) | ≥ 580 | Broader range |
| Hardness HRC | 24-32 | Acceptance window |
A286 Products Manufactured per This Spec
- A286 Wire and Wire Rod
- A286 Welding Rod (raw stock)
- A286 Springs (wire substrate)
- A286 Round Bar
- A286 Forgings
Mating & Related Specifications
- AMS 5732 — Stricter hardness window (29-32 HRC) variant.
- AMS 5737 — Precision-aged bar variant.
- AMS 5853 — Welding wire spec — specifically for filler / welding applications.
Drawing Call-Out Example
A286 wire, AMS 5726, sol-treated and aged, ⌀ 1.6 mm × coil, cold-drawn finish, hardness 24-32 HRC, EN 10204 3.1.
AMS 5726 — A286 Bar, Wire and Forgings — Frequently Asked Questions
What is AMS 5726?
SAE / AMS spec covering A286 (UNS S66286) bar, wire, and forgings in solution-treated and precipitation-aged condition. Notable for covering wire alongside bar and forgings, and for a broader hardness acceptance window (24-32 HRC) than AMS 5732 (29-32 HRC).
Why does AMS 5726 cover wire?
AMS 5726 is the dedicated SAE / AMS spec for A286 wire in addition to bar and forgings. Used for cold-formed springs, snap rings, welding-rod raw stock, and instrumentation wire applications.
AMS 5726 vs AMS 5732 — which to specify?
AMS 5726: broader hardness window (24-32 HRC), covers wire. AMS 5732: tighter hardness window (29-32 HRC), bar/forging/tubing only. Choose AMS 5732 for tight aerospace fastener applications; AMS 5726 for wire and broader-tolerance applications.
What wire diameter does AMS 5726 cover?
0.5-12 mm cold-drawn through progressive dies. Used for cold-formed springs, snap rings, retaining clips, welding-rod raw stock, and instrumentation wire applications.
Is AMS 5726 magnetic?
No. Magnetic permeability < 1.005 verified per ASTM A342.
What's the lead time on AMS 5726 wire?
Standard sizes 0.5-3 mm: 4-6 weeks from heat release. Larger 3-12 mm: 6-8 weeks. Coiled wire packaged on 15 kg spools or as straight rod 1-2 m.
Can AMS 5726 be used for welding wire?
Yes — but the dedicated welding-wire spec is AMS 5853. AMS 5726 wire can be used as welding-rod raw stock when matched to A286-base welding requirements.
What springs are made from AMS 5726?
A286 compression, extension, and torsion springs are cold-wound from AMS 5726 wire 1-5 mm diameter. Spring service to 700 °C with retained spring-back.
Can AMS 5726 be NACE MR0175 compliant?
Yes — when supplied with hardness ≤ HRC 35 per NACE MR0175 / ISO 15156-3. The broader hardness window (24-32 HRC) generally falls within sour-service limits.
Related A286 Specifications & Reference
Other A286 specifications: AMS / ASTM hub · AMS 5525 · AMS 5731 · AMS 5732 · AMS 5737 · AMS 5853 · AMS 5895 · ASTM A453 grade 660 · ASTM A638 grade 660 · ASTM B637 · DIN 1.4980 · UNS S66286.
Canonical A286 reference: A286 chemical composition · A286 mechanical properties · A286 heat treatment.
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