Aluminum 2519
AA 2519 · UNS A92519 · also MIL-DTL-46192
2519 is an Al-Cu-Mg armor plate alloy (UNS A92519, MIL-DTL-46192) developed for welded military ground-vehicle armor.
Reference datasheet — 2519 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 T87 condition
2519 tempers and conditions
2519 is supplied in 6 conditions, soft to hard. T87 is the default FabDigit quotes; the values on this page are for it.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Softest condition for severe forming, straightening or machining before re-solution treatment. | 80 | 175 | 20 | 48 HB | 44 % IACS |
Solution heat treated and naturally aged | Intermediate strength with better ductility for forming operations before artificial aging. | 250 | 375 | 18 | 100 HB | 27 % IACS |
Solution heat treated and artificially aged | Peak-aged condition for formed or machined parts that cannot take the stretch of T8x tempers. | 350 | 440 | 11 | 120 HB | 32 % IACS |
Modified (interrupted/two-step) aging for improved ballistic toughness | Army-developed modified aging that trades a little strength for higher toughness and better resistance to ballistic-shock cracking; specialty supply only. | 395 | 455 | 12 | 128 HB | 32 % IACS |
T8, stress relieved by stretching | Low-residual-stress plate temper for machined structural parts where flatness after machining matters. | 400 | 462 | 10 | 130 HB | 31 % IACS |
T87Default T8 with 7 % cold work | The standard MIL-DTL-46192 armor plate condition — highest strength with qualified ballistic and weld performance. | 448 | 483 | 10 | 135 HB | 30 % IACS |
What is 2519?
2519 is an Al-Cu-Mg armor plate alloy (UNS A92519, MIL-DTL-46192) developed for welded military ground-vehicle armor. It combines ballistic performance with arc and friction stir weldability, and the default condition gives 448 MPa yield, 483 MPa tensile, 10 % elongation and 135 HB with service to 150 °C. Cold formability is low (formability score 28) and corrosion resistance is modest (score 38), so plate is conversion coated and painted. Where ballistic capability is not required, 5083-class plate is the simpler weldable alternative. 2519 has a density of 2.82 g/cm³ (0.102 lb/in³), heavier than 89% of aluminum grades. It melts at 543°C (1,009 °F). 2519 has a yield strength of 448 MPa (65 ksi) and a tensile strength of 483 MPa (70.1 ksi) — stronger than 91% of aluminum grades. Elongation at break is 10% and the elastic modulus is 73.1 GPa (10.6 Msi).
What is 2519 used for?
- Military vehicle armor plate
- Amphibious and combat vehicle hull panels
- Ballistic structural bulkheads
- Welded armored hull weldments
- Appliqué armor kits
- Machined armor mounting fittings
Advantages
- High strength — 448 MPa (65 ksi), better than 91% of aluminum grades
- Tough — resists crack growth — 33 MPa·√m (30 ksi·√in), better than 87% of aluminum grades
- Easy to machine — 72/100, better than 80% of aluminum grades
Limitations
- Needs corrosion protection — 38/100, worse than 79% of aluminum grades
2519 properties
Typical room-temperature values for 2519-T87; bars are the position among aluminum grades.
Physical3
2519 has a density of 2.82 g/cm³ (0.102 lb/in³), heavier than 89% of aluminum grades. It melts at 543°C (1,009 °F).
Mechanical14
2519 has a yield strength of 448 MPa (65 ksi) and a tensile strength of 483 MPa (70.1 ksi) — stronger than 91% of aluminum grades. Elongation at break is 10% and the elastic modulus is 73.1 GPa (10.6 Msi).
Thermal6
2519 is rated for continuous service to 150°C (302 °F). It conducts heat at 125 W/m·K (72.2 BTU/hr·ft·°F), worse than 72% of aluminum grades. Thermal expansion is 22.3 µm/m·K (12.4 µin/in·°F).
Electrical3
2519 conducts electricity at 30 % IACS, worse than 73% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is fair (38/100), worse than 79% of aluminum grades.
Sustainability4
Producing a kilogram of 2519 takes about 210 MJ of energy and emits 12.5 kg of CO₂ — more than 88% of aluminum grades. Typical recycled content is 15%.
Manufacturability8
2519's machinability is very good (72/100, better than 80% of aluminum grades); weldability very good (75/100); formability poor (28/100).
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. 2519 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 2519
Is 2519 easy to machine?
Machines well in T87/T851 with sharp carbide tools, high speed and flood coolant; chips are short and surface finish good, but relieve stresses before heavy asymmetric material removal in thick plate.
Can 2519 be welded?
Designed for GMAW/GTAW with 2319 filler and for friction stir welding; expect ~55–70 % of base-metal strength in the as-welded HAZ, so weld lines are kept out of primary ballistic areas and post-weld aging is sometimes used.
Can 2519 be formed, bent or molded?
Cold formability in T87 is poor (large bend radii only); form in O or T4 and then heat treat/age, or use hot forming above ~300 °C.
2519 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 |
|---|---|---|
| Cuprincipal strengthening element | 5.3 – 6.4 | 5.8 |
| Mg | 0.05 – 0.4 | 0.2 |
| Mn | 0.1 – 0.5 | 0.3 |
| Zrgrain-structure control | 0.1 – 0.25 | 0.18 |
| V | 0.05 – 0.15 | 0.1 |
| Ti | 0.02 – 0.1 | 0.06 |
| Si | ≤ 0.25 | |
| Fe | ≤ 0.3 | |
| Zn | ≤ 0.1 | |
| Others (each)each | ≤ 0.05 | |
| Others (total)total | ≤ 0.15 | |
| Al | balance |
What surface finishes work on 2519?
Chromate/trivalent conversion coating plus CARC or epoxy primer is standard; sulfuric anodize gives adequate protection but a darker, less uniform film because of the high Cu content, and bare plate must never be left unprotected in marine service.
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 2519 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- A92519
- Trade names
- MIL-DTL-46192
How much does 2519 cost?
2519 is a high-cost aluminum ($$$$), pricier than about 78% 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.
2519 — frequently asked
What is 2519 used for?
2519 is typically used for military vehicle armor plate, amphibious and combat vehicle hull panels, ballistic structural bulkheads, welded armored hull weldments, appliqué armor kits and machined armor mounting fittings. In short: weldable armor-grade aluminum; ballistic plate alloy; poor cold formability.
What is the yield strength of 2519?
2519 has a typical yield strength of 448 MPa (65 ksi) and a tensile strength of 483 MPa (70.1 ksi) — stronger than 91% of aluminum grades. Strength varies by condition: see the 6 listed tempers.
Is 2519 easy to machine?
Yes — machinability is rated very good (72/100, better than 80% of aluminum grades). Machines well in T87/T851 with sharp carbide tools, high speed and flood coolant; chips are short and surface finish good, but relieve stresses before heavy asymmetric material removal in thick plate.
Can 2519 be welded?
Yes — weldability is rated very good (75/100). Designed for GMAW/GTAW with 2319 filler and for friction stir welding; expect ~55–70 % of base-metal strength in the as-welded HAZ, so weld lines are kept out of primary ballistic areas and post-weld aging is sometimes used.
What surface finishes work on 2519?
Chromate/trivalent conversion coating plus CARC or epoxy primer is standard; sulfuric anodize gives adequate protection but a darker, less uniform film because of the high Cu content, and bare plate must never be left unprotected in marine service.
Can 2519 be formed, bent or molded?
Cold formability in T87 is poor (large bend radii only); form in O or T4 and then heat treat/age, or use hot forming above ~300 °C.
What is the maximum service temperature of 2519?
2519 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 2519-T87 and 2519-O?
T87 is the default condition — the standard MIL-DTL-46192 armor plate condition — highest strength with qualified ballistic and weld performance. O: softest condition for severe forming, straightening or machining before re-solution treatment. Yield strength is 448 MPa in T87 versus 80 MPa in O.
How much does 2519 cost?
2519 is a high-cost aluminum ($$$$), pricier than about 78% 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
- MIL-DTL-46192 Armor Plate, Aluminum Alloy 2519 — US DoD (2016)
- 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 — Battelle/FAA (2023)
- US Army Research Laboratory reports on 2519 aluminum armor and friction stir welding — ARL (2005)
- SMM / Mysteel aluminium plate price references (2025)
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.