Aluminum 2419-T852
Precip hard
AA 2419 · UNS A92419
T852 = solution treated, compressively stress-relieved, artificially aged
Hand and die forgings (bulkheads, fittings) where low residual stress is needed before deep machining.
Values for the T852 condition
Other 2419 tempers and conditions
2419 is listed in 10 conditions; see the grade overview at 2419.
Compare all 10 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Softest condition for heavy forming, flattening or machining before solution treatment. | 76 | 172 | 18 | 46 HB | 44 % IACS |
Solution treated, cold worked ~1 %, naturally aged | Intermediate temper supplied for forming/welding of tank barrels before final artificial ageing to T81/T87. | 250 | 360 | 17 | 100 HB | 28 % IACS |
T3, stress relieved by stretching | Low-residual-stress plate for rough machining of large parts that are later aged to T851. | 250 | 360 | 16 | 100 HB | 28 % IACS |
T6, heat treated by the user | Applied to weldments and formed parts that must be re-solution-treated and aged after fabrication. | 290 | 415 | 10 | 115 HB | 30 % IACS |
Solution treated, cold worked ~7 %, naturally aged | Heavily stretched intermediate temper used as the precursor to the high-strength T87 condition. | 315 | 395 | 11 | 117 HB | 28 % IACS |
T852This page Solution treated, compressively stress-relieved, artificially aged | Hand and die forgings (bulkheads, fittings) where low residual stress is needed before deep machining. | 345 | 440 | 8 | 128 HB | 30 % IACS |
T851Default T8, stress relieved by stretching | The standard damage-tolerant plate temper: best combination of strength, fracture toughness and machining stability. | 350 | 455 | 10 | 130 HB | 30 % IACS |
Solution treated, cold worked ~1 %, artificially aged | Sheet/thin-plate service temper with good strength retention at elevated temperature after welding and ageing. | 350 | 455 | 10 | 130 HB | 30 % IACS |
Solution treated, stretched with minor straightening, artificially aged | Extruded stringers, frames and rings needing T8-level strength with controlled residual stress. | 360 | 460 | 9 | 132 HB | 30 % IACS |
T8 with 7 % cold work | Highest-strength standard temper, used for launch-vehicle tank plate and welded pressure structure. | 395 | 475 | 10 | 135 HB | 30 % IACS |
What is 2419-T852?
2419-T852 is 2419 in the T852 condition — hand and die forgings (bulkheads, fittings) where low residual stress is needed before deep machining. 2419-T852 has a yield strength of 345 MPa (50 ksi) and a tensile strength of 440 MPa (63.8 ksi) — stronger than 83% of aluminum grades. Elongation at break is 8% and the elastic modulus is 73.1 GPa (10.6 Msi). 2419-T852 has a density of 2.84 g/cm³ (0.103 lb/in³), heavier than 93% of aluminum grades. It melts at 543°C (1,009 °F). T851 is the default condition FabDigit quotes; T852 is available on request or by drawing note.
Advantages
- Tough — resists crack growth — 35 MPa·√m (31.9 ksi·√in), better than 91% of aluminum grades
- Easy to machine — 75/100, better than 86% of aluminum grades
- High strength — 345 MPa (50 ksi), better than 83% of aluminum grades
- High service temperature — 175°C (347 °F), better than 83% of aluminum grades
Limitations
- Needs corrosion protection — 33/100, worse than 91% of aluminum grades
- Poor heat conductor — 120 W/m·K (69.3 BTU/hr·ft·°F), worse than 80% of aluminum grades
2419-T852 properties
Typical room-temperature values for 2419-T852; 22 are specific to this condition. Other listed values are 2419 reference data and may not represent this condition. Bars are the position among aluminum grades.
Physical3
2419-T852 has a density of 2.84 g/cm³ (0.103 lb/in³), heavier than 93% of aluminum grades. It melts at 543°C (1,009 °F).
Mechanical14
2419-T852 has a yield strength of 345 MPa (50 ksi) and a tensile strength of 440 MPa (63.8 ksi) — stronger than 83% of aluminum grades. Elongation at break is 8% and the elastic modulus is 73.1 GPa (10.6 Msi).
Thermal6
2419-T852 is rated for continuous service to 175°C (347 °F). It conducts heat at 120 W/m·K (69.3 BTU/hr·ft·°F), worse than 80% of aluminum grades. Thermal expansion is 22.3 µm/m·K (12.4 µin/in·°F).
Electrical3
2419-T852 conducts electricity at 30 % IACS, worse than 73% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is poor (33/100), worse than 91% of aluminum grades.
Sustainability4
Producing a kilogram of 2419-T852 takes about 205 MJ of energy and emits 12.5 kg of CO₂ — more than 76% of aluminum grades. Typical recycled content is 5%.
Manufacturability6
2419-T852's machinability is very good (75/100, better than 86% of aluminum grades); weldability very good (72/100); formability poor (25/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 2419-T852
Is 2419 easy to machine?
Machines well in T8 tempers with short chips; use sharp carbide tooling, high speed, generous coolant, and expect distortion if pre-stretched (T351/T851) plate is machined unevenly.
Can 2419 be welded?
One of the few readily fusion-weldable 2000-series alloys — GTAW/GMAW or FSW with 2319 filler; post-weld solution treat and age (T62) or age (T81/T87) to restore strength.
Can 2419 be formed, bent or molded?
Form in O or T3x tempers; T8 tempers have limited cold ductility and need generous bend radii or warm forming, with stretch-formed panels aged after shaping.
What surface finishes work on 2419?
Protect with chromic/sulfuric anodize plus primer or with alclad/paint systems; bare surfaces pit readily in chloride environments and copper content dulls anodic film color.
2419 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 |
|---|---|---|
| Siimpurity limit tighter than 2219 | ≤ 0.15 | — |
| Feimpurity limit tighter than 2219 — key to toughness | ≤ 0.18 | — |
| Cu | 5.8 – 6.8 | 6.3 |
| Mn | 0.2 – 0.4 | 0.3 |
| Mg | ≤ 0.02 | — |
| Zn | ≤ 0.1 | — |
| Ti | 0.02 – 0.1 | 0.06 |
| V | 0.05 – 0.15 | 0.1 |
| Zr | 0.1 – 0.25 | 0.18 |
| Others (each) | ≤ 0.05 | — |
| Others (total) | ≤ 0.15 | — |
| Al | balance | — |
2419-T852 — frequently asked
What is 2419-T852 used for?
2419-T852 is typically used for aircraft structural plate, wing spars, fuselage bulkheads and frames, welded aerospace tank and pressure structures, machined ribs and fittings from thick plate and elevated-temperature airframe structure to 175 °C. In short: weldable 2000-series plate; higher toughness than 2024; 175 °C service capability.
What is the yield strength of 2419-T852?
2419-T852 has a typical yield strength of 345 MPa (50 ksi) and a tensile strength of 440 MPa (63.8 ksi) — stronger than 83% of aluminum grades. Strength varies by condition: see the 10 listed tempers.
Is 2419-T852 easy to machine?
Yes — machinability is rated very good (75/100, better than 86% of aluminum grades). Machines well in T8 tempers with short chips; use sharp carbide tooling, high speed, generous coolant, and expect distortion if pre-stretched (T351/T851) plate is machined unevenly.
Can 2419-T852 be welded?
Yes — weldability is rated very good (72/100). One of the few readily fusion-weldable 2000-series alloys — GTAW/GMAW or FSW with 2319 filler; post-weld solution treat and age (T62) or age (T81/T87) to restore strength.
What surface finishes work on 2419-T852?
Protect with chromic/sulfuric anodize plus primer or with alclad/paint systems; bare surfaces pit readily in chloride environments and copper content dulls anodic film color.
Can 2419-T852 be formed, bent or molded?
Form in O or T3x tempers; T8 tempers have limited cold ductility and need generous bend radii or warm forming, with stretch-formed panels aged after shaping.
What is the maximum service temperature of 2419-T852?
2419-T852 is rated for continuous use to about 175°C (347 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 2419-T851 and 2419-O?
T851 is the default condition — the standard damage-tolerant plate temper: best combination of strength, fracture toughness and machining stability. O: softest condition for heavy forming, flattening or machining before solution treatment. Yield strength is 350 MPa in T851 versus 76 MPa in O.
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 — ASM International (1990)
- MMPDS — Metallic Materials Properties Development and Standardization — FAA/Battelle (2023)
- AMS 4348 / AMS-QQ-A-250 series aluminium plate specifications — SAE International (2020)
- ASM Handbook Vol. 13B — Corrosion: Materials — ASM International (2005)
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.