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 5736 — A286 Bar and Forgings
AMS 5736 is the SAE Aerospace Material Specification covering A286 (UNS S66286) bar and forgings in solution-treated and precipitation-aged condition with an alternate solution-treatment temperature for specific stress-rupture-strength applications. Used in aerospace forgings and high-stress-rupture-critical bolting where the AMS 5732 sol-treatment is replaced by an alternate cycle. See parent A286 AMS / ASTM specifications hub, related A286 forged bar, sister specs AMS 5731, AMS 5732, AMS 5734.
Spec Scope & Coverage
AMS 5736 covers A286 bar and forgings in solution-treated and aged condition. Solution-treatment temperature is intermediate between AMS 5732 (1650 °F) and AMS 5731 (1800 °F), producing a property profile balancing room-temperature tensile and elevated-temperature stress-rupture. Used in aerospace forging applications where the standard AMS 5732 cycle is not optimal.
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 5736 — A286 Bar and Forgings — Spec Requirements
| Property | AMS 5736 requirement | Notes |
|---|---|---|
| Form | Bar and forgings | Aerospace standard form |
| Solution treatment | Per spec — alternate to AMS 5732 | Intermediate sol temperature |
| Aging | 1325 °F × 16 hours | Standard A286 aging |
| Tensile strength | ≥ 895 MPa | Aged condition |
| Yield strength 0.2 % | ≥ 605 MPa | Slightly different vs AMS 5732 |
| Hardness | 29-32 HRC | Aged target |
When to Specify AMS 5736 — A286 Bar and Forgings
- Aerospace forging applications: AMS 5736 forgings for aerospace structural and engine forging applications requiring intermediate stress-rupture / tensile balance.
- Specific OEM drawings: Drawings citing AMS 5736 directly — common on certain GE and Pratt & Whitney specifications. Substitute with AMS 5732 only with engineering approval.
- Stricter alternative: For tighter hardness uniformity, specify AMS 5737 precision bar.
- Standard aerospace alternative: AMS 5732 for general aerospace bar / forging / tubing.
Mechanical Properties per This Spec
| Property | Min value (mill-aged) | Notes |
|---|---|---|
| Tensile strength (MPa) | ≥ 895 | Aged |
| Yield strength 0.2 % (MPa) | ≥ 605 | Slightly different from AMS 5732 |
| Hardness HRC | 29-32 | Aged target |
A286 Products Manufactured per This Spec
Mating & Related Specifications
- AMS 5732 — Standard aerospace sol+aged variant — most common alternative.
- AMS 5731 — Sol-treated only variant — customer ages downstream.
- AMS 5737 — Precision-aged bar variant.
Drawing Call-Out Example
A286 forging, AMS 5736, sol-treated and aged, drawing-specific dimensions, EN 10204 3.1, AS9102 first-article on lot.
AMS 5736 — A286 Bar and Forgings — Frequently Asked Questions
What is AMS 5736?
SAE / AMS spec covering A286 (UNS S66286) bar and forgings in solution-treated and aged condition with alternate solution-treatment cycle balancing room-temperature tensile and elevated-temperature stress-rupture properties.
AMS 5736 vs AMS 5732 — which to specify?
AMS 5736: alternate sol-treatment temperature, slightly different yield (≥ 605 MPa). AMS 5732: standard 1650 °F sol-treatment, yield ≥ 655 MPa. Specify per drawing — substitute only with engineering approval.
Can AMS 5732 substitute for AMS 5736?
Substitution requires engineering approval — the heat-treatment cycles produce different stress-rupture / tensile balance. Drawings citing AMS 5736 specifically should not be substituted without OEM approval.
Which OEMs use AMS 5736?
Some GE and Pratt & Whitney aerospace forging drawings specifically cite AMS 5736. Verify with OEM SRM before substituting alternate AMS spec.
Is AMS 5736 ASME pressure-vessel acceptable?
Generally yes — chemistry conforms to UNS S66286 acceptable in ASME Section III. Verify drawing-specific spec acceptance.
Is AMS 5736 magnetic?
No. Magnetic permeability < 1.005 verified per ASTM A342.
What's the lead time on AMS 5736 forgings?
Standard sizes 75-150 mm: 12-16 weeks from heat release. Larger sizes 150-300 mm: 16-20 weeks. AS9102 first-article + EN 10204 3.2 third-party witness: add 2-3 weeks.
Can AMS 5736 be NACE MR0175 compliant?
Yes — when supplied with hardness ≤ HRC 35 per NACE MR0175 / ISO 15156-3. Specify on PO.
What products use AMS 5736?
Aerospace forgings — engine casings, structural components, hot-section attach forgings — where the alternate sol-treatment property profile is specified per OEM drawing.
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.
Satisfaction Survey
