Aluminum 1230-H26
Supply condition
AA 1230 · EN AW-1230, AW 1230
H26 = strain hardened and partially annealed, three-quarter hard
Stabilised three-quarter hard strip for shallow forming with better crack resistance than H16.
Values for the H26 condition
Other 1230 tempers and conditions
1230 is listed in 10 conditions; see the grade overview at 1230.
Compare all 10 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Default choice for deep drawing, forming, fin/foil stock and cladding — maximum ductility and conductivity. | 28 | 80 | 38 | 20 HB | 61 % IACS |
As fabricated | Mill product with no mechanical property guarantee; pick for re-rolling or further working. | 35 | 85 | 30 | 22 HB | 61 % IACS |
Strain hardened and partially annealed, quarter hard | Stabilised quarter-hard temper giving H12 strength with better ductility and flatness. | 70 | 95 | 16 | 24 HB | 60 % IACS |
Strain hardened, quarter hard | Light cold work when slightly stiffer sheet is needed but forming must stay easy. | 75 | 95 | 12 | 25 HB | 60 % IACS |
Strain hardened and partially annealed, half hard | Half-hard strength with retained bend ductility — common for formed foil containers and fin stock. | 90 | 115 | 11 | 29 HB | 60 % IACS |
Strain hardened, half hard | General-purpose semi-rigid sheet/strip with moderate bending ability. | 100 | 115 | 8 | 30 HB | 60 % IACS |
H26This page Strain hardened and partially annealed, three-quarter hard | Stabilised three-quarter hard strip for shallow forming with better crack resistance than H16. | 110 | 130 | 7 | 32 HB | 60 % IACS |
Strain hardened, three-quarter hard | Higher stiffness strip for shallow forming and roll-formed profiles. | 120 | 130 | 5 | 33 HB | 60 % IACS |
Strain hardened, full hard | Standard hard foil/strip temper — maximum strain-hardened strength with minimal formability. | 140 | 150 | 4 | 38 HB | 59 % IACS |
Strain hardened, extra hard | Extra-hard thin foil/fin stock where tensile strength and gauge control matter more than ductility. | 155 | 165 | 2.5 | 40 HB | 59 % IACS |
What is 1230-H26?
1230-H26 is 1230 supplied in the H26 condition — stabilised three-quarter hard strip for shallow forming with better crack resistance than H16. 1230-H26 has a yield strength of 110 MPa (16 ksi) and a tensile strength of 130 MPa (18.9 ksi) — weaker than 81% of aluminum grades. Elongation at break is 7% and the elastic modulus is 69 GPa (10 Msi). 1230-H26 has a density of 2.7 g/cm³ (0.0975 lb/in³), lighter than 59% of aluminum grades. It melts at 646°C (1,195 °F).
Advantages
- Good corrosion resistance — 80/100, better than 97% of aluminum grades
- Polishes to a fine finish — 85/100, better than 96% of aluminum grades
- Conducts heat well — 227 W/m·K (131.2 BTU/hr·ft·°F), better than 95% of aluminum grades
- High electrical conductivity — 60 % IACS, better than 95% of aluminum grades
- Readily welded — 88/100, better than 85% of aluminum grades
Limitations
- Difficult to machine — 34/100, worse than 87% of aluminum grades
- Low strength — 110 MPa (16 ksi), worse than 81% of aluminum grades
1230-H26 properties
Typical room-temperature values for 1230-H26; 17 are specific to this condition. Other listed values are 1230 reference data and may not represent this condition. Bars are the position among aluminum grades.
Physical3
1230-H26 has a density of 2.7 g/cm³ (0.0975 lb/in³), lighter than 59% of aluminum grades. It melts at 646°C (1,195 °F).
Mechanical10
1230-H26 has a yield strength of 110 MPa (16 ksi) and a tensile strength of 130 MPa (18.9 ksi) — weaker than 81% of aluminum grades. Elongation at break is 7% and the elastic modulus is 69 GPa (10 Msi).
Thermal6
1230-H26 is rated for continuous service to 125°C (257 °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
1230-H26 conducts electricity at 60 % IACS, better than 95% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is very good (80/100), better than 97% of aluminum grades.
Sustainability4
Producing a kilogram of 1230-H26 takes about 205 MJ of energy and emits 12 kg of CO₂ — more than 76% of aluminum grades. Typical recycled content is 10%.
Manufacturability8
1230-H26's machinability is poor (34/100, worse than 87% of aluminum grades); weldability excellent (88/100); formability good (65/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 1230-H26
Is 1230 easy to machine?
Very gummy — use sharp high-rake polished carbide tools, high speed, low feed pressure and flood lubricant; expect burrs and built-up edge.
Can 1230 be welded?
Excellent with GTAW/GMAW using 1100 or 1188 filler; autogenous welds are sound but weld zone anneals to O-temper strength.
Can 1230 be formed, bent or molded?
Outstanding cold formability in O/H2x tempers — deep drawing, roll forming and foil rolling to <10 µm; H18/H19 needs generous bend radii.
What surface finishes work on 1230?
Takes bright clear anodising, chemical brightening and conversion coatings well; also readily painted or laminated as foil stock.
1230 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 silicon plus iron limit | ≤ 0.7 |
| Cu | ≤ 0.1 |
| Mn | ≤ 0.05 |
| Mg | ≤ 0.05 |
| Zn | ≤ 0.1 |
| Ti | ≤ 0.03 |
| Others (each)others total 0.10 max | ≤ 0.03 |
| Alminimum 99.30 % aluminium | ≥ 99.3 (balance) |
1230-H26 — frequently asked
What is 1230-H26 used for?
1230-H26 is typically used for alclad cladding layer on plate and sheet, household foil, packaging foil, heat-exchanger fin stock, container and lid foil and laminated insulation foil. In short: thin-gauge foil; workable.
What is the yield strength of 1230-H26?
1230-H26 has a typical yield strength of 110 MPa (16 ksi) and a tensile strength of 130 MPa (18.9 ksi) — weaker than 81% of aluminum grades. Strength varies by condition: see the 10 listed tempers.
Is 1230-H26 easy to machine?
Not especially — machinability is rated poor (34/100, worse than 87% of aluminum grades). Very gummy — use sharp high-rake polished carbide tools, high speed, low feed pressure and flood lubricant; expect burrs and built-up edge.
Can 1230-H26 be welded?
Yes — weldability is rated excellent (88/100). Excellent with GTAW/GMAW using 1100 or 1188 filler; autogenous welds are sound but weld zone anneals to O-temper strength.
What surface finishes work on 1230-H26?
Takes bright clear anodising, chemical brightening and conversion coatings well; also readily painted or laminated as foil stock.
Can 1230-H26 be formed, bent or molded?
Outstanding cold formability in O/H2x tempers — deep drawing, roll forming and foil rolling to <10 µm; H18/H19 needs generous bend radii.
What is the maximum service temperature of 1230-H26?
1230-H26 is rated for continuous use to about 125°C (257 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Can FabDigit make parts in 1230-H26?
Yes — 1230-H26 is available for sheet metal; every part is priced by an engineer rather than instantly. Upload a STEP file to get a price and a DFM check.
Sources
- International Alloy Designations and Chemical Composition Limits for Wrought Aluminum (Teal Sheets) — The Aluminum Association (2018)
- EN 573-3 Aluminium and aluminium alloys — Chemical composition — CEN (2019)
- ASTM B209 / B479 Aluminum Sheet, Plate and Foil — ASTM (2021)
- 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. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.