Stainless Steel A286 · heat-treated state · default condition
Stainless Steel A286 Solution Annealed
Properties of the Solution Annealed condition, compared with the other A286 tempers.
Standard stocked condition: soft, weldable and formable, intended to be aged after fabrication.
What is A286 Solution Annealed?
A286 Solution Annealed is A286 heat treated to Solution Annealed — standard stocked condition: soft, weldable and formable, intended to be aged after fabrication. A286 Solution Annealed has a yield strength of 310 MPa (45 ksi) and a tensile strength of 690 MPa (100 ksi) — weaker than 63% of stainless steel grades. Elongation at break is 40% and the elastic modulus is 201 GPa (29.2 Msi). A286 Solution Annealed has a density of 7.92 g/cm³ (0.286 lb/in³), heavier than 76% of stainless steel grades. It melts at 1,370°C (2,498 °F).
Limitations
- High embodied carbon — 6.8 kg CO₂/kg, worse than 95% of stainless steel grades
- Difficult to machine — 25/100, worse than 88% of stainless steel grades
- Poor heat conductor — 12.6 W/m·K (7.28 BTU/hr·ft·°F), worse than 87% of stainless steel grades
- Low electrical conductivity — 1.9 % IACS, worse than 84% of stainless steel grades
A286 Solution Annealed properties
Typical room-temperature values for A286 Solution Annealed — 15 properties are specific to this condition; the rest are grade-level values shared by every A286 temper. Each bar shows where the value sits among the stainless steel grades in FabDigit's library — further right is higher.
Physical3
A286 Solution Annealed has a density of 7.92 g/cm³ (0.286 lb/in³), heavier than 76% of stainless steel grades. It melts at 1,370°C (2,498 °F).
Mechanical13
A286 Solution Annealed has a yield strength of 310 MPa (45 ksi) and a tensile strength of 690 MPa (100 ksi) — weaker than 63% of stainless steel grades. Elongation at break is 40% and the elastic modulus is 201 GPa (29.2 Msi).
Thermal6
A286 Solution Annealed is rated for continuous service to 650°C (1,202 °F). It conducts heat at 12.6 W/m·K (7.28 BTU/hr·ft·°F), worse than 87% of stainless steel grades. Thermal expansion is 16.4 µm/m·K (9.11 µin/in·°F).
Electrical3
A286 Solution Annealed conducts electricity at 1.9 % IACS, worse than 84% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (62/100), worse than 53% of stainless steel grades.
Sustainability4
Producing a kilogram of A286 Solution Annealed takes about 100 MJ of energy and emits 6.8 kg of CO₂ — more than 98% of stainless steel grades. Typical recycled content is 30%.
Manufacturability8
A286 Solution Annealed's machinability is poor (25/100, worse than 88% of stainless steel grades); weldability good (55/100); formability good (60/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Other A286 tempers and conditions
A286 is also supplied in 3 other conditions. The full side-by-side table is on the A286 overview.
- Solution AnnealedDefaultStandard stocked condition: soft, weldable and formable, intended to be aged after fabrication.310 MPa yield · 170 HB
- CW+AgedPick for 1100–1300 MPa bolts, springs and studs where ductility can be traded for strength.1,000 MPa yield · 39 HRC
- Age HardenedStandard service condition for turbine discs, bolts and springs needing ~700 MPa yield up to 650–700 °C.725 MPa yield · 30 HRC
- AnnealedSoftest condition for heavy cold forming, deep drawing or wire drawing before final solution + age.260 MPa yield · 155 HB
Working with A286 Solution Annealed
Is A286 easy to machine?
Work-hardens strongly and is gummy: use rigid setups, positive-rake carbide, heavy constant feed, low speed (~20–30 m/min aged) and flood coolant; rough in solution-treated state and finish after aging.
Can A286 be welded?
GTAW/EBW with matching A286 or Ni-base filler; keep heat input low, avoid restraint and re-solution + re-age after welding to restore properties and avoid strain-age/HAZ cracking.
Can A286 be formed, bent or molded?
Form, draw and coil in the annealed/solution-treated condition — expect ~2× the forming loads of 304 and spring-back; hot work at 1000–1150 °C, then solution treat and age.
What surface finishes work on A286?
Passivate (nitric or citric) or electropolish; no anodizing — silver, Ni or dry-film lubricant coatings are common on threads to prevent galling.
A286 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| C | ≤ 0.08 | 0.05 |
| Mn | ≤ 2 | 1.35 |
| Si | ≤ 1 | 0.5 |
| P | ≤ 0.03 | — |
| S | ≤ 0.03 | — |
| Cr | 13.5 – 16 | 15 |
| Ni | 24 – 27 | 25.5 |
| Mo | 1 – 1.5 | 1.25 |
| Tiγ′ former | 1.9 – 2.35 | 2.15 |
| V | 0.1 – 0.5 | 0.3 |
| Al | ≤ 0.35 | 0.2 |
| Bgrain-boundary strengthener | 0 – 0.01 | 0.01 |
| Febalance, ~53 % | balance | — |
A286 Solution Annealed — frequently asked
What is A286 Solution Annealed used for?
A286 Solution Annealed is typically used for turbine wheels, aerospace fasteners and bolts, turbocharger shafts and wheels, exhaust system components, high-temperature springs and gas turbine rings and casings. In short: high-fatigue superalloy.
What is the yield strength of A286 Solution Annealed?
A286 Solution Annealed has a typical yield strength of 310 MPa (45 ksi) and a tensile strength of 690 MPa (100 ksi) — weaker than 63% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is A286 Solution Annealed easy to machine?
Not especially — machinability is rated poor (25/100, worse than 88% of stainless steel grades). Work-hardens strongly and is gummy: use rigid setups, positive-rake carbide, heavy constant feed, low speed (~20–30 m/min aged) and flood coolant; rough in solution-treated state and finish after aging.
Can A286 Solution Annealed be welded?
Yes — weldability is rated good (55/100). GTAW/EBW with matching A286 or Ni-base filler; keep heat input low, avoid restraint and re-solution + re-age after welding to restore properties and avoid strain-age/HAZ cracking.
What surface finishes work on A286 Solution Annealed?
Passivate (nitric or citric) or electropolish; no anodizing — silver, Ni or dry-film lubricant coatings are common on threads to prevent galling.
Can A286 Solution Annealed be formed, bent or molded?
Form, draw and coil in the annealed/solution-treated condition — expect ~2× the forming loads of 304 and spring-back; hot work at 1000–1150 °C, then solution treat and age.
What is the maximum service temperature of A286 Solution Annealed?
A286 Solution Annealed is rated for continuous use to about 650°C (1,202 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Can FabDigit make parts in A286 Solution Annealed?
Yes — A286 Solution Annealed is available for CNC machining and sheet metal with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- AMS 5737 / AMS 5731 — Alloy Bars, Forgings 15Cr-25.5Ni-1.2Mo-2.1Ti — SAE International (2020)
- ASTM A453/A453M Grade 660 — Bolting with Expansion Coefficients Comparable to Austenitic Stainless — ASTM (2022)
- GB/T 14992 / GJB 2612 — GH2132 — SAC (2016)
- ASM Specialty Handbook: Heat-Resistant Materials — ASM International (1997)
- MMPDS-17, Chapter 6 (Heat-Resistant Alloys) — Battelle/FAA (2022)
- A286 / 1.4980 alloy datasheet — Special Metals / Aubert & Duval (2021)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.