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 5735 — A286 Bar, Forging, Tubing and Rings
AMS 5735 is the SAE Aerospace Material Specification covering A286 (UNS S66286) bar, forging, tubing, and rings in solution-treated and precipitation-aged condition. Used for aerospace fastener manufacture and machined-component applications requiring sol+aged condition with specific dimensional and inspection requirements per the spec. See parent A286 AMS / ASTM specifications hub, sister specs AMS 5731, AMS 5732, AMS 5737, AMS 5734, AMS 5736, related A286 round bar, forged bar.
Spec Scope & Coverage
AMS 5735 covers A286 bar, forging, tubing, and rings in solution-treated and precipitation-aged condition. VIM-VAR melted, hot-worked to required form, sol-treated and aged per the spec heat-treatment cycle. Hardness 29-32 HRC; tensile ≥ 895 MPa; yield ≥ 655 MPa. Used directly for fastener cold-heading, aerospace machining, downstream component manufacture.
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 5735 — A286 Bar, Forging, Tubing and Rings — Spec Requirements
| Property | AMS 5735 requirement | Notes |
|---|---|---|
| Form | Bar, forging, tubing, rings | Wide form coverage |
| Melt practice | VIM-VAR consumable-electrode | Aerospace inclusion control |
| Heat treatment | Sol-treated + aged 1325 °F × 16 h | Mill-aged |
| Tensile strength | ≥ 895 MPa (130 ksi) | Aged condition |
| Yield strength 0.2 % | ≥ 655 MPa (95 ksi) | Aged condition |
| Hardness | 29-32 HRC | Aged target |
| Magnetic permeability | < 1.005 | Per ASTM A342 |
| AQMS | AS9100D | Aerospace AQMS required |
When to Specify AMS 5735 — A286 Bar, Forging, Tubing and Rings
- Aerospace fastener cold-heading: AMS 5735 mill-aged bar feeds cold-heading into A286 hex bolts, SHCS, NAS bolts.
- Aerospace tubing applications: AMS 5735 tubing for aerospace high-temperature fluid conveyance, jet-engine bleed-air piping.
- Aerospace rings (forged seamless): AMS 5735 forged rings for aerospace pressure-vessel and engine casing applications.
- Sol-treated alternative: For sol-treated bar (downstream user ages), specify AMS 5731 or AMS 5734.
- Precision-aged variant: AMS 5737 for precision aged bar with tighter heat-treatment + hardness window.
Mechanical Properties per This Spec
| Property | Min value (mill-aged) | Notes |
|---|---|---|
| Tensile strength (MPa) | ≥ 895 | Mill-aged |
| Yield strength 0.2 % (MPa) | ≥ 655 | Mill-aged |
| Elongation (%) | ≥ 15 | In 50 mm gauge |
| Hardness HRC | 29-32 | Aged target |
A286 Products Manufactured per This Spec
Mating & Related Specifications
- AMS 5732 — Equivalent sol+aged bar / forging spec.
- AMS 5736 — Sol+aged variant with alternate sol-treatment temperature.
- AMS 5737 — Precision-aged variant.
Drawing Call-Out Example
A286 bar, AMS 5735, VIM-VAR melt, sol-treated and aged, ⌀ 16.0 mm × 3000 mm length, cold-drawn pickled, ±0.05 mm OD, EN 10204 3.1.
AMS 5735 — A286 Bar, Forging, Tubing and Rings — Frequently Asked Questions
What is AMS 5735?
SAE / AMS spec covering A286 (UNS S66286) bar, forging, tubing, and rings in solution-treated and precipitation-aged condition. VIM-VAR consumable-electrode melt required. Mill-aged for ready-to-use aerospace fastener and machined-component manufacture.
AMS 5735 vs AMS 5732 — which to specify?
AMS 5735: VIM-VAR consumable-electrode melt required (aerospace double-melt). AMS 5732: VIM-only or VIM-VAR acceptable. Specify AMS 5735 when aerospace double-melt traceability is mandated; AMS 5732 for general aerospace use.
What forms does AMS 5735 cover?
Bar (round, hex, square), forging, tubing (seamless and welded), and rings. Wide form coverage suitable for aerospace fastener, machined component, and forged ring manufacture.
What's the heat-treatment for AMS 5735?
Solution-treated and precipitation-aged. Specific temperatures per the spec heat-treatment cycle (typically sol 1650 °F or 1800 °F + aged 1325 °F × 16 hours). Final hardness 29-32 HRC.
Is AMS 5735 ASME pressure-vessel acceptable?
Generally yes — AMS 5735 chemistry conforms to UNS S66286, which is acceptable in ASME Section III Subsection NB / NF for primary-pressure-bearing nuclear applications. Verify drawing-specific spec acceptance.
Is AMS 5735 magnetic?
No. Magnetic permeability < 1.005 verified per ASTM A342.
What's the lead time on AMS 5735?
Standard sizes: 6-10 weeks from heat release. Larger sizes: 10-14 weeks. AS9102 first-article + EN 10204 3.2: add 2-3 weeks.
Can AMS 5735 be NACE MR0175 compliant?
Yes — when supplied with hardness ≤ HRC 35 per NACE MR0175 / ISO 15156-3. Specify on PO.
What products use AMS 5735 stock?
Aerospace fasteners, machined components, forged rings for engine casings, and aerospace tubing for bleed-air and fuel manifold applications.
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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