Aluminum 2A10
GB 2A10
2A10 (LY10) is an Al-Cu-Mg rivet alloy of the 2000-series family, supplied mainly as wire, rod and bar in O, T4, T6 and H112 for cold-headed fasteners.
Reference datasheet — 2A10 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 T4 condition
2A10 tempers and conditions
2A10 is supplied in 4 conditions, soft to hard. T4 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 wire drawing, heading and severe cold forming before heat treatment. | 80 | 185 | 24 | 45 HB | 45 % IACS |
Strain hardened from hot working only | As-extruded/as-drawn stock bought for subsequent solution treatment by the fastener maker. | 130 | 250 | 16 | 65 HB | 40 % IACS |
T4Default Solution heat treated and naturally aged | Standard supply condition for 2A10 rivet wire and rod: high shear strength with retained driveability after quenching (or after refrigeration). | 245 | 390 | 18 | 100 HB | 30 % IACS |
Solution heat treated and artificially aged | Choose when maximum yield strength and dimensional stability are needed on machined parts rather than driveable rivets. | 340 | 420 | 10 | 118 HB | 35 % IACS |
What is 2A10?
2A10 (LY10) is an Al-Cu-Mg rivet alloy of the 2000-series family, supplied mainly as wire, rod and bar in O, T4, T6 and H112 for cold-headed fasteners. Engineers select it for high-strength riveted joints in aircraft and structural assemblies; default values are 245 MPa yield, 390 MPa tensile, 18 % elongation and 100 HB (62 HRB), with 130 W/m·K conductivity and 30 % IACS. It is not suited to fusion welding, corrosion resistance is low (33/100) and service is limited to about 120 °C, so protective coatings are mandatory. 2A10 has a density of 2.8 g/cm³ (0.101 lb/in³), heavier than 81% of aluminum grades. It melts at 512°C (954 °F). 2A10 has a yield strength of 245 MPa (35.5 ksi) and a tensile strength of 390 MPa (56.6 ksi) — stronger than 64% of aluminum grades. Elongation at break is 18% and the elastic modulus is 72 GPa (10.4 Msi).
What is 2A10 used for?
- Aircraft solid rivets
- Rivet and fastener wire stock
- Riveted airframe joints
- Cold-headed pins and studs
- Screw-machine fastener bar
- Structural assembly hardware
Advantages
- Ductile — tolerates forming and impact — 18%, better than 86% of aluminum grades
- Tough — resists crack growth — 30 MPa·√m (27.3 ksi·√in), better than 76% of aluminum grades
Limitations
- Difficult to weld — 18/100, worse than 94% of aluminum grades
- Needs corrosion protection — 33/100, worse than 91% of aluminum grades
- Limited service temperature — 120°C (248 °F), worse than 79% of aluminum grades
2A10 properties
Typical room-temperature values for 2A10-T4; bars are the position among aluminum grades.
Physical3
2A10 has a density of 2.8 g/cm³ (0.101 lb/in³), heavier than 81% of aluminum grades. It melts at 512°C (954 °F).
Mechanical12
2A10 has a yield strength of 245 MPa (35.5 ksi) and a tensile strength of 390 MPa (56.6 ksi) — stronger than 64% of aluminum grades. Elongation at break is 18% and the elastic modulus is 72 GPa (10.4 Msi).
Thermal6
2A10 is rated for continuous service to 120°C (248 °F). It conducts heat at 130 W/m·K (75.1 BTU/hr·ft·°F), worse than 65% of aluminum grades. Thermal expansion is 22.9 µm/m·K (12.7 µin/in·°F).
Electrical3
2A10 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 2A10 takes about 205 MJ of energy and emits 12.5 kg of CO₂ — more than 76% of aluminum grades. Typical recycled content is 10%.
Manufacturability6
2A10's machinability is very good (70/100, better than 72% of aluminum grades); weldability poor (18/100); formability fair (45/100).
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. 2A10 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 2A10
Is 2A10 easy to machine?
Machines cleanly in T4/T6 with sharp carbide tools, high speed and flood coolant; chips break better than in O temper.
Can 2A10 be welded?
Not suited to fusion welding (hot cracking, loss of temper) — join by riveting, bolting or adhesive; resistance spot welding possible with qualified schedules.
Can 2A10 be formed, bent or molded?
Head and upset rivets in the freshly quenched (or refrigerated) T4 state; anneal to O for heavy cold drawing/bending, then re-solution treat.
2A10 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 |
|---|---|---|
| Cu | 3.9 – 4.5 | 4.2 |
| Mn | 0.3 – 0.5 | 0.4 |
| Mglow Mg keeps rivets driveable after quench | 0.15 – 0.3 | 0.22 |
| Siimpurity | ≤ 0.25 | |
| Feimpurity | ≤ 0.2 | |
| Znimpurity | ≤ 0.1 | |
| Tigrain refiner | ≤ 0.15 | |
| Niimpurity | ≤ 0.1 | |
| Others (each)total 0.15 max | ≤ 0.05 | |
| Al | balance |
What surface finishes work on 2A10?
Chromic or sulfuric anodize plus primer/chromate conversion for corrosion protection; bare Cu-rich surface must not 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 2A10 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- GB (China)
- LY10
How much does 2A10 cost?
2A10 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.
2A10 — frequently asked
What is 2A10 used for?
2A10 is typically used for aircraft solid rivets, rivet and fastener wire stock, riveted airframe joints, cold-headed pins and studs, screw-machine fastener bar and structural assembly hardware. In short: dedicated aircraft rivet alloy; 18 % elongation rivet stock; cold-headable in T4.
What is the yield strength of 2A10?
2A10 has a typical yield strength of 245 MPa (35.5 ksi) and a tensile strength of 390 MPa (56.6 ksi) — stronger than 64% of aluminum grades. Strength varies by condition: see the 4 listed tempers.
Is 2A10 easy to machine?
Yes — machinability is rated very good (70/100, better than 72% of aluminum grades). Machines cleanly in T4/T6 with sharp carbide tools, high speed and flood coolant; chips break better than in O temper.
Can 2A10 be welded?
Not readily — weldability is rated poor (18/100). Not suited to fusion welding (hot cracking, loss of temper) — join by riveting, bolting or adhesive; resistance spot welding possible with qualified schedules.
What surface finishes work on 2A10?
Chromic or sulfuric anodize plus primer/chromate conversion for corrosion protection; bare Cu-rich surface must not be left unprotected in marine service.
Can 2A10 be formed, bent or molded?
Head and upset rivets in the freshly quenched (or refrigerated) T4 state; anneal to O for heavy cold drawing/bending, then re-solution treat.
What is the maximum service temperature of 2A10?
2A10 is rated for continuous use to about 120°C (248 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 2A10-T4 and 2A10-O?
T4 is the default condition — standard supply condition for 2A10 rivet wire and rod: high shear strength with retained driveability after quenching (or after refrigeration). O: softest condition for wire drawing, heading and severe cold forming before heat treatment. Yield strength is 245 MPa in T4 versus 80 MPa in O.
How much does 2A10 cost?
2A10 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
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials — ASM International (2005)
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.