AMS 5731 vs AMS 5732
What material is AMS 5731?
AMS 5731 refers to A286 stainless steel, which is an iron-nickel-chromium high-temperature alloy with high strength, corrosion resistance, and high-temperature resistance up to 1300°F (704°C). It is commonly used in aerospace applications (such as jet engines and fasteners) and high-temperature industrial applications. This material is supplied in various forms such as bars, forgings, and plates, and its properties are enhanced through age hardening heat treatment.
What material is AMS 5732?
AMS 5732 is an aerospace material specification for A-286 stainless steel, a high-temperature iron-based alloy ideally suited for jet engine parts, fasteners, and oil and gas equipment components. This material is available in the form of bars, forgings, tubes, and wires.
AMS 5731 vs AMS 5732:Specifications
AMS 5731 - Bars, Rings, Forgings and Tubing (1,800°F Solution Treatment)
AMS 5732 - Bars, Rings, Forgings, and Tubing (1,800°F Solution Treatment + Age)
AMS 5734 - Bars, Rings, Forgings, and Tubing (1,650°F Solution Treatment)
AMS 5737 - Bars, Rings, Forgings, and Tubing (1,650°F Solution Treatment + Age)
| Item | AMS 5731 | AMS 5732 |
| Alloy | A286 (UNS S66286) | A286 (UNS S66286) |
| Alloy Type | Nickel-Chromium-Iron Precipitation-Hardening Superalloy | Nickel-Chromium-Iron Precipitation-Hardening Superalloy |
| Product Forms | Bars, wire, forgings, tubing, rings | Bars, wire, forgings, tubing, rings |
| Delivery Condition | Solution Treated only (1 800 °F / 980 °C) | Solution Treated + Aged (1 800 °F / 980 °C + precipitation aging) |
| SHT Temperature | 1 800 °F (980 °C) / 1 hr min | 1 800 °F (980 °C) |
| Aging Treatment | Not included - customer applies downstream | Included - ships in final aged condition |
| Typical Aging (customer) | 1 325 °F (718 °C) / 4 hr, air cool | Already applied at mill |
| Hardness (as-supplied) | 24 – 28 HRC (soft, formable) | 36 – 42 HRC (aged, high strength) |
| Key Purpose | Downstream user controls aging timing; maximum formability | Ready-to-use; direct machining / installation |
AMS 5731 & AMS 5732 Chemical Composition (mass %)
| Element | C | Cr | Ni | Mo | Mn | Si | Ti | Al |
| Range | ≤ 0.09 | 25.0 – 28.0 | 12.0 – 15.0 | 2.00 – 3.00 | ≤ 1.50 | ≤ 1.00 | 0.35 – 0.65 | 0.35 – 0.65 |
AMS 5731 vs AMS 5732:Mechanical Properties
| Property | AMS 5731 (SHT only) | AMS 5732 (SHT + Aged) |
| Tensile Strength (min) | 130 ksi (896 MPa) | 130 ksi (896 MPa) |
| Yield Strength 0.2 % (min) | 85 ksi (586 MPa) | 85 ksi (586 MPa) |
| Elongation (min) | ≥ 12 % | ≥ 12 % |
| Reduction of Area (min) | ≥ 40 % | ≥ 40 % |
| Hardness | 24 – 28 HRC | 36 – 42 HRC |
AMS 5731 vs AMS 5732
Both AMS 5731 and AMS 5732 refer to A286 alloy, a high-strength, high-temperature resistant stainless steel, but they differ in their heat treatment processes. AMS 5731 undergoes solution treatment at 1800°F (980°C) followed by quenching, resulting in good strength but requiring subsequent aging treatment. AMS 5732, on the other hand, includes an additional age hardening treatment (typically at 1325°F/720°C) on top of the AMS 5731 process, making it suitable for high-performance aerospace/turbine applications.
AMS 5732 vs AMS 5737
AMS 5732 and AMS 5737 both specify A286 stainless steel but differ in their heat treatment, leading to different strength levels: AMS 5737 is solution treated at a lower temperature (1650°F) and aged for higher strength (140 ksi tensile), while AMS 5732 is solution treated at a higher temperature (1800°F) and aged for slightly lower strength (130 ksi tensile) but potentially better high-temp performance/creep, with AMS 5732 essentially superseding older AMS 5735.
AMS 5726 vs. AMS 5731 vs. AMS 5732 vs.AMS 5734
| AMS Number | Condition | SHT Temp | Key Difference |
| AMS 5726 | SHT + Work-Strengthened (200 ksi min) | Per spec | VIM+VAR melt traceability; higher strength |
| AMS 5731 | SHT only | 1 800 °F (980 °C) | Standard SHT; customer ages downstream |
| AMS 5732 | SHT + Aged | 1 800 °F (980 °C) | Ships aged; ready for service |
| AMS 5734 | SHT only | 1 650 °F (900 °C) | Lower SHT temp; higher RT strength, lower stress-rupture |
| AMS 5737 | SHT + Aged (Precision) | 1 650 °F (900 °C) | Precision bar; lower SHT + aged |
| AMS 5525 | SHT (Sheet/Strip/Plate) | Per spec | Flat product only |
| AMS 5853 | Cold-worked / Work-strengthened | - | Wire/bar; max strength |
A286 Stainless Steel Round Bar Supplier
A-286 material achieves high strength after cold working and aging treatment, and is widely used in high-temperature fasteners and springs. We stock A286 steel in round bars (conforming to AMS 5731, 5732, and 5737 standards), plates, and coils (conforming to AMS 5525 and 5858 standards), and offer a variety of cutting and processing services.
A286 Stainless Steel Round Bars Specifications
A286 Stainless Steel Round Bars (Hexagonal, Rectangular, Square), A286 Stainless Steel Forgings
A286 Stainless Steel Bars: AMS 5731, AMS 5732, AMS 5734, AMS 5736, AMS 5737, AMS 5726, AMS 5853, AMS 5895, ASTM-A-638 Gr 660, ASTM-A-453 Gr 660
Round Bar Stock Sizes: Diameter 3/16" to 12", conforming to AMS 5737 standard.
A286 Stainless Steel Strain Hardened Ground Bars
40-50% cold worked, tensile strength up to 205 ksi
If you would like to further narrow down your selection, please provide the following information:
• The required diameter and length
• Any necessary industry standards or certifications (e.g., AMS 5737, ASTM A638)
