Aluminum 2025
AA 2025 · UNS A92025
2025 (A92025) is an Al-Cu forging alloy historically used for aircraft propeller blades, combining good hot forgeability with moderate heat-treated strength.
Reference datasheet — 2025 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the T6 condition
2025 tempers and conditions
2025 is supplied in 4 conditions, soft to hard. T6 is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Softest condition for maximum workability, straightening or re-forging before heat treatment. | 95 | 205 | 24 | 55 HB | 47 % IACS |
As fabricated | As-forged stock with no controlled thermal treatment — bought for subsequent solution treating and aging. | 140 | 260 | 20 | 70 HB | 45 % IACS |
Solution heat treated and naturally aged | Intermediate temper used when forgings must be straightened, coined or machined before final artificial aging. | 215 | 370 | 22 | 100 HB | 34 % IACS |
T6Default Solution heat treated and artificially aged | Standard delivery condition for 2025 forgings — full strength for propeller blades and structural forgings. | 255 | 400 | 19 | 110 HB | 40 % IACS |
What is 2025?
2025 (A92025) is an Al-Cu forging alloy historically used for aircraft propeller blades, combining good hot forgeability with moderate heat-treated strength. In the default T6 condition it provides 255 MPa yield, 400 MPa tensile, 19% elongation and 110 HB, and it is supplied mainly as forging stock and forged shapes in F, O, T4 and T6. Constraints are limited arc weldability, only fair cold formability, moderate corrosion resistance, a 150 °C service ceiling and narrow availability. 2014A or 2618A are the usual substitutes for current forging work. 2025 has a density of 2.81 g/cm³ (0.102 lb/in³), heavier than 86% of aluminum grades. It melts at 520°C (968 °F). 2025 has a yield strength of 255 MPa (37 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 67% of aluminum grades. Elongation at break is 19% and the elastic modulus is 72 GPa (10.4 Msi).
What is 2025 used for?
- Propeller blades
- Forged aircraft components
- Forged airframe fittings
- Rotating forged blade sections
- Legacy aero-engine accessory forgings
- Machined-from-forging structural parts
Advantages
- Ductile — tolerates forming and impact — 19%, better than 87% of aluminum grades
Limitations
- Needs corrosion protection — 35/100, worse than 85% of aluminum grades
- Difficult to weld — 25/100, worse than 76% of aluminum grades
2025 properties
Typical room-temperature values for 2025-T6; bars are the position among aluminum grades.
Physical3
2025 has a density of 2.81 g/cm³ (0.102 lb/in³), heavier than 86% of aluminum grades. It melts at 520°C (968 °F).
Mechanical11
2025 has a yield strength of 255 MPa (37 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 67% of aluminum grades. Elongation at break is 19% and the elastic modulus is 72 GPa (10.4 Msi).
Thermal6
2025 is rated for continuous service to 150°C (302 °F). It conducts heat at 154 W/m·K (89 BTU/hr·ft·°F), better than 68% of aluminum grades. Thermal expansion is 22.7 µm/m·K (12.6 µin/in·°F).
Electrical3
2025 conducts electricity at 40 % IACS, better than 72% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is fair (35/100), worse than 85% of aluminum grades.
Sustainability4
Producing a kilogram of 2025 takes about 205 MJ of energy and emits 12.5 kg of CO₂ — more than 76% of aluminum grades. Typical recycled content is 10%.
Manufacturability7
2025's machinability is good (65/100, better than 62% of aluminum grades); weldability poor (25/100); formability fair (35/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the aluminum family
Yield strength against density for every aluminum grade FabDigit runs. 2025 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 2025
Is 2025 easy to machine?
Machines cleanly in T6 with sharp carbide tooling, high speeds and flood coolant; annealed/F material is gummy and needs positive-rake tools.
Can 2025 be welded?
Not recommended for arc welding (hot-cracking, loss of T6 properties) — join by riveting or bolting; resistance spot welding possible with qualified schedules.
Can 2025 be formed, bent or molded?
Excellent hot forgeability at roughly 420–460 °C, which is the alloy's reason for existence; cold forming should be done in O or T4 and followed by heat treatment.
2025 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 |
|---|---|---|
| Si | 0.5 – 1.2 | 0.8 |
| Feimpurity limit | ≤ 1 | |
| Cuprincipal strengthening element | 3.9 – 5 | 4.5 |
| Mn | 0.4 – 1.2 | 0.8 |
| Mg | ≤ 0.05 | |
| Cr | ≤ 0.1 | |
| Zn | ≤ 0.25 | |
| Others (each) | ≤ 0.05 | |
| Others (total) | ≤ 0.15 | |
| Al | balance |
What surface finishes work on 2025?
Anodize or chromate-convert plus prime for corrosion protection; shot peening improves fatigue life of forged blade sections.
Surface treatments FabDigit runs on aluminum parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Organic Coating
Equivalent designations
Standards and trade names that resolve to Aluminum 2025 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- A92025
- Also called
- 2025-T6
How much does 2025 cost?
2025 is a premium-cost aluminum ($$$), cheaper than about 51% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
2025 — frequently asked
What is 2025 used for?
2025 is typically used for propeller blades, forged aircraft components, forged airframe fittings, rotating forged blade sections, legacy aero-engine accessory forgings and machined-from-forging structural parts. In short: easy-forging 2000-series alloy; propeller-blade legacy grade; moderate strength, good ductility.
What is the yield strength of 2025?
2025 has a typical yield strength of 255 MPa (37 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 67% of aluminum grades. Strength varies by condition: see the 4 listed tempers.
Is 2025 easy to machine?
Reasonably — machinability is rated good (65/100, better than 62% of aluminum grades). Machines cleanly in T6 with sharp carbide tooling, high speeds and flood coolant; annealed/F material is gummy and needs positive-rake tools.
Can 2025 be welded?
Not readily — weldability is rated poor (25/100). Not recommended for arc welding (hot-cracking, loss of T6 properties) — join by riveting or bolting; resistance spot welding possible with qualified schedules.
What surface finishes work on 2025?
Anodize or chromate-convert plus prime for corrosion protection; shot peening improves fatigue life of forged blade sections.
Can 2025 be formed, bent or molded?
Excellent hot forgeability at roughly 420–460 °C, which is the alloy's reason for existence; cold forming should be done in O or T4 and followed by heat treatment.
What is the maximum service temperature of 2025?
2025 is rated for continuous use to about 150°C (302 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 2025-T6 and 2025-O?
T6 is the default condition — standard delivery condition for 2025 forgings — full strength for propeller blades and structural forgings. O: softest condition for maximum workability, straightening or re-forging before heat treatment. Yield strength is 255 MPa in T6 versus 95 MPa in O.
How much does 2025 cost?
2025 is a premium-cost aluminum ($$$), cheaper than about 51% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- International Alloy Designations and Chemical Composition Limits for Wrought Aluminum (Teal Sheets) — The Aluminum Association (2018)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
- Aluminum Standards and Data — The Aluminum Association (2017)
- Properties and Physical Metallurgy of Aluminum Alloys (J.E. Hatch, ed.) — ASM International (1984)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.