Aluminum 1230A-H24
Temper
AA 1230A · EN AW-1230A
H24 = strain hardened and partially annealed, half hard
Half-hard but partially annealed — preferred when H14 strip must still take tight bends.
Values for the H24 condition
Other 1230A tempers and conditions
1230A is listed in 9 conditions; see the grade overview at 1230A.
Compare all 9 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
ODefault Annealed | Softest, most formable condition — default for foil stock, deep drawing and clad layers. | 30 | 85 | 38 | 23 HB | 60.5 % IACS |
Strain hardened from hot working only | Hot-rolled/extruded plate and bar supplied as-fabricated with guaranteed minimum properties. | 35 | 85 | 25 | 24 HB | 60 % IACS |
Strain hardened and partially annealed, quarter hard | Stabilised quarter-hard strip with better ductility than H12 at similar strength. | 65 | 95 | 14 | 27 HB | 60 % IACS |
Strain hardened, quarter hard | Light cold work for slightly stiffer sheet that still bends and forms easily. | 75 | 95 | 12 | 28 HB | 60 % IACS |
H24This page Strain hardened and partially annealed, half hard | Half-hard but partially annealed — preferred when H14 strip must still take tight bends. | 85 | 110 | 11 | 31 HB | 59.5 % IACS |
Strain hardened, half hard | Most common half-hard sheet temper — best strength/formability compromise for panels and strip. | 95 | 110 | 9 | 32 HB | 59.5 % IACS |
Strain hardened and partially annealed, three-quarter hard | Three-quarter hard stabilised strip for roll-formed or lightly bent parts. | 100 | 125 | 7 | 36 HB | 59 % IACS |
Strain hardened, three-quarter hard | Choose when stiffness/dent resistance matters more than bending. | 110 | 125 | 6 | 38 HB | 59 % IACS |
Strain hardened, full hard | Fully cold-worked; standard hard temper for household/packaging foil and strip that needs maximum strength. | 130 | 145 | 5 | 44 HB | 58.5 % IACS |
What is 1230A-H24?
1230A-H24 is 1230A in the H24 temper — half-hard but partially annealed — preferred when H14 strip must still take tight bends. 1230A-H24 has a yield strength of 85 MPa (12.3 ksi) and a tensile strength of 110 MPa (16 ksi) — weaker than 88% of aluminum grades. Elongation at break is 11% and the elastic modulus is 69 GPa (10 Msi). 1230A-H24 has a density of 2.71 g/cm³ (0.0979 lb/in³), heavier than 51% of aluminum grades. It melts at 646°C (1,195 °F). O is the default condition FabDigit quotes; H24 is available on request or by drawing note.
Advantages
- Conducts heat well — 227 W/m·K (131.2 BTU/hr·ft·°F), better than 95% of aluminum grades
- High electrical conductivity — 59.5 % IACS, better than 95% of aluminum grades
- Readily welded — 92/100, better than 95% of aluminum grades
- Polishes to a fine finish — 80/100, better than 93% of aluminum grades
- Forms and bends easily — 85/100, better than 91% of aluminum grades
Limitations
- Difficult to machine — 32/100, worse than 89% of aluminum grades
- Low strength — 85 MPa (12.3 ksi), worse than 88% of aluminum grades
- Limited service temperature — 120°C (248 °F), worse than 79% of aluminum grades
1230A-H24 properties
Typical room-temperature values for 1230A-H24; 19 are specific to this condition. Other listed values are 1230A reference data and may not represent this condition. Bars are the position among aluminum grades.
Physical3
1230A-H24 has a density of 2.71 g/cm³ (0.0979 lb/in³), heavier than 51% of aluminum grades. It melts at 646°C (1,195 °F).
Mechanical11
1230A-H24 has a yield strength of 85 MPa (12.3 ksi) and a tensile strength of 110 MPa (16 ksi) — weaker than 88% of aluminum grades. Elongation at break is 11% and the elastic modulus is 69 GPa (10 Msi).
Thermal6
1230A-H24 is rated for continuous service to 120°C (248 °F). It conducts heat at 227 W/m·K (131.2 BTU/hr·ft·°F), better than 95% of aluminum grades. Thermal expansion is 23.6 µm/m·K (13.1 µin/in·°F).
Electrical3
1230A-H24 conducts electricity at 59.5 % IACS, better than 95% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is very good (72/100), better than 83% of aluminum grades.
Sustainability4
Producing a kilogram of 1230A-H24 takes about 200 MJ of energy and emits 12.5 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 20%.
Manufacturability8
1230A-H24's machinability is poor (32/100, worse than 89% of aluminum grades); weldability excellent (92/100); formability excellent (85/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 1230A-H24
Is 1230A easy to machine?
Very gummy and prone to built-up edge — use polished high-rake carbide, high speed, low feed and generous lubricant; hard tempers (H18) cut cleaner than O.
Can 1230A be welded?
Excellent with GTAW/GMAW using 1100/1188 filler; no cracking issues, but the HAZ anneals back to O-temper strength.
Can 1230A be formed, bent or molded?
Outstanding cold formability in O/H2x tempers — deep drawing, spinning and foil rolling; springback low, but hard tempers need generous bend radii.
What surface finishes work on 1230A?
Anodizes bright and clear (good for reflectors and decorative foil); also readily rolled to mirror finish, painted, laminated or coated.
1230A 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.
| Element | Spec limit (wt %) |
|---|---|
| Si+Fecombined limit | ≤ 0.7 |
| Cu | ≤ 0.1 |
| Mn | ≤ 0.05 |
| Mg | ≤ 0.05 |
| Zn | ≤ 0.1 |
| Ti | ≤ 0.05 |
| Others (each) | ≤ 0.03 |
| Others (total) | ≤ 0.1 |
| Alminimum aluminium content 99.30 % | ≥ 99.3 (balance) |
1230A-H24 — frequently asked
What is 1230A-H24 used for?
1230A-H24 is typically used for electrical conductor foil, cable sheathing and general fabrication. In short: conductor and foil grade; between 1200 and 1350; near-maximum formability.
What is the yield strength of 1230A-H24?
1230A-H24 has a typical yield strength of 85 MPa (12.3 ksi) and a tensile strength of 110 MPa (16 ksi) — weaker than 88% of aluminum grades. Strength varies by condition: see the 9 listed tempers.
Is 1230A-H24 easy to machine?
Not especially — machinability is rated poor (32/100, worse than 89% of aluminum grades). Very gummy and prone to built-up edge — use polished high-rake carbide, high speed, low feed and generous lubricant; hard tempers (H18) cut cleaner than O.
Can 1230A-H24 be welded?
Yes — weldability is rated excellent (92/100). Excellent with GTAW/GMAW using 1100/1188 filler; no cracking issues, but the HAZ anneals back to O-temper strength.
What surface finishes work on 1230A-H24?
Anodizes bright and clear (good for reflectors and decorative foil); also readily rolled to mirror finish, painted, laminated or coated.
Can 1230A-H24 be formed, bent or molded?
Outstanding cold formability in O/H2x tempers — deep drawing, spinning and foil rolling; springback low, but hard tempers need generous bend radii.
What is the maximum service temperature of 1230A-H24?
1230A-H24 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 1230A-O and 1230A-H18?
O is the default condition — softest, most formable condition — default for foil stock, deep drawing and clad layers. H18: fully cold-worked; standard hard temper for household/packaging foil and strip that needs maximum strength. Yield strength is 30 MPa in O versus 130 MPa in H18.
Sources
- EN 573-3 Aluminium and aluminium alloys — chemical composition of wrought products — CEN (2019)
- EN 485-2 Aluminium and aluminium alloys — sheet, strip and plate: mechanical properties — CEN (2016)
- International Alloy Designation and Chemical Composition Limits (Teal Sheets) — The Aluminum Association (2018)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
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.