Stainless Steel A286 · temper
Stainless Steel A286 Annealed
Properties of the Annealed condition, compared with the other A286 tempers.
Softest condition for heavy cold forming, deep drawing or wire drawing before final solution + age.
What is A286 Annealed?
A286 Annealed is A286 in the Annealed temper — softest condition for heavy cold forming, deep drawing or wire drawing before final solution + age. A286 Annealed has a yield strength of 260 MPa (37.7 ksi) and a tensile strength of 620 MPa (89.9 ksi) — weaker than 84% of stainless steel grades. Elongation at break is 45% and the elastic modulus is 201 GPa (29.2 Msi). A286 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). Solution Annealed is the default condition FabDigit quotes; Annealed is available on request or by drawing note.
Advantages
- Ductile — tolerates forming and impact — 45%, better than 76% of stainless steel grades
Limitations
- High embodied carbon — 6.8 kg CO₂/kg, worse than 95% 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 strength — 260 MPa (37.7 ksi), worse than 84% of stainless steel grades
- Low electrical conductivity — 1.9 % IACS, worse than 84% of stainless steel grades
A286 Annealed properties
Typical room-temperature values for A286 Annealed — 12 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 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 Annealed has a yield strength of 260 MPa (37.7 ksi) and a tensile strength of 620 MPa (89.9 ksi) — weaker than 84% of stainless steel grades. Elongation at break is 45% and the elastic modulus is 201 GPa (29.2 Msi).
Thermal6
A286 Annealed is rated for continuous service to 600°C (1,112 °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 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 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 Annealed's machinability is poor (28/100, worse than 80% of stainless steel grades); weldability good (55/100); formability good (65/100).
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 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 Annealed — frequently asked
What is A286 Annealed used for?
A286 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 Annealed?
A286 Annealed has a typical yield strength of 260 MPa (37.7 ksi) and a tensile strength of 620 MPa (89.9 ksi) — weaker than 84% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is A286 Annealed easy to machine?
Not especially — machinability is rated poor (28/100, worse than 80% 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 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 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 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 Annealed?
A286 Annealed is rated for continuous use to about 600°C (1,112 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Can FabDigit make parts in A286 Annealed?
Yes — A286 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.