Aluminum 8011-H28
Supply condition
AA 8011 · UNS A98011 · EN AW-8011, AW 8011
H28 = strain hardened and partially annealed, full hard
Near-maximum strength with slightly better ductility/flatness than H18.
Values for the H28 condition
Other 8011 tempers and conditions
8011 is listed in 10 conditions; see the grade overview at 8011.
Compare all 10 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Pick for deep-drawn caps, soft household/lidding foil and maximum formability. | 40 | 95 | 25 | 24 HB | 48 % IACS |
Strain hardened and partially annealed, quarter hard | Back-annealed quarter-hard strip: better ductility and flatness than H12 at similar strength. | 90 | 125 | 10 | 34 HB | 46 % IACS |
Strain hardened, quarter hard | Light cold work for strip that still needs substantial bending/forming. | 95 | 120 | 7 | 35 HB | 46 % IACS |
Strain hardened and partially annealed, half hard | Common closure/fin-stock temper when deep drawing or curling is combined with mid strength. | 110 | 145 | 6 | 41 HB | 45 % IACS |
Strain hardened, half hard | The workhorse strip/foil-stock temper: enough strength for closures, fin stock and container foil while still forming well. | 120 | 145 | 4 | 42 HB | 45 % IACS |
Strain hardened and partially annealed, three-quarter hard | Higher strength with retained ductility for stiff but still formable strip. | 135 | 165 | 4 | 47 HB | 45 % IACS |
Strain hardened, three-quarter hard | Higher-strength cap and closure stock where only mild forming is required. | 145 | 165 | 3 | 48 HB | 45 % IACS |
H28This page Strain hardened and partially annealed, full hard | Near-maximum strength with slightly better ductility/flatness than H18. | 160 | 185 | 2.5 | 52 HB | 44 % IACS |
Strain hardened, full hard | Standard temper for pharmaceutical blister (push-through) foil and stiff strip — high strength, low elongation. | 165 | 185 | 2 | 53 HB | 44 % IACS |
Strain hardened, extra hard | Extra-hard thin foil/strip where maximum as-rolled strength and flatness are needed. | 185 | 205 | 1.5 | 57 HB | 44 % IACS |
What is 8011-H28?
8011-H28 is 8011 supplied in the H28 condition — near-maximum strength with slightly better ductility/flatness than H18. 8011-H28 has a yield strength of 160 MPa (23.2 ksi) and a tensile strength of 185 MPa (26.8 ksi) — weaker than 61% of aluminum grades. Elongation at break is 2.5% and the elastic modulus is 69 GPa (10 Msi). 8011-H28 has a density of 2.71 g/cm³ (0.0979 lb/in³), heavier than 51% of aluminum grades. It melts at 620°C (1,148 °F).
Advantages
- Conducts heat well — 200 W/m·K (115.6 BTU/hr·ft·°F), better than 91% of aluminum grades
- High electrical conductivity — 44 % IACS, better than 85% of aluminum grades
Limitations
- Difficult to machine — 35/100, worse than 86% of aluminum grades
- Limited ductility — 2.5%, worse than 83% of aluminum grades
- Limited service temperature — 120°C (248 °F), worse than 79% of aluminum grades
- Hard to polish — 45/100, worse than 76% of aluminum grades
8011-H28 properties
Typical room-temperature values for 8011-H28; 17 are specific to this condition. Other listed values are 8011 reference data and may not represent this condition. Bars are the position among aluminum grades.
Physical3
8011-H28 has a density of 2.71 g/cm³ (0.0979 lb/in³), heavier than 51% of aluminum grades. It melts at 620°C (1,148 °F).
Mechanical11
8011-H28 has a yield strength of 160 MPa (23.2 ksi) and a tensile strength of 185 MPa (26.8 ksi) — weaker than 61% of aluminum grades. Elongation at break is 2.5% and the elastic modulus is 69 GPa (10 Msi).
Thermal6
8011-H28 is rated for continuous service to 120°C (248 °F). It conducts heat at 200 W/m·K (115.6 BTU/hr·ft·°F), better than 91% of aluminum grades. Thermal expansion is 23.4 µm/m·K (13 µin/in·°F).
Electrical3
8011-H28 conducts electricity at 44 % IACS, better than 85% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is good (65/100), better than 71% of aluminum grades.
Sustainability4
Producing a kilogram of 8011-H28 takes about 200 MJ of energy and emits 12 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 35%.
Manufacturability7
8011-H28's machinability is fair (35/100, worse than 86% of aluminum grades); weldability good (58/100); formability fair (38/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 8011-H28
Is 8011 easy to machine?
Very soft and gummy — use polished high-rake carbide, high speed, generous coolant/lubricant to avoid built-up edge; rarely machined since it ships as thin strip/foil.
Can 8011 be welded?
Not heat-treatable, so no HAZ softening problem beyond annealing; TIG/MIG with 1100 or 4043 filler works on strip, but typical foil gauges are joined by adhesive lamination or heat-seal lacquer instead.
Can 8011 be formed, bent or molded?
Excellent rollability to <10 µm foil and good drawing/curling in O–H24 tempers; harder H18/H19 tempers are chosen for push-through blister foil where controlled brittleness is wanted.
What surface finishes work on 8011?
Normally chromate/chrome-free conversion coated then lacquered, printed or PET/PE laminated; anodizing is possible but gives a dull grey film because of the Fe/Si intermetallics.
8011 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 |
|---|---|---|
| Si | 0.5 – 0.9 | 0.7 |
| FeFe-rich intermetallics give the fine grain/foil rollability | 0.6 – 1 | 0.8 |
| Cu | ≤ 0.1 | — |
| Mn | ≤ 0.2 | — |
| Mg | ≤ 0.05 | — |
| Cr | ≤ 0.05 | — |
| Zn | ≤ 0.1 | — |
| Ti | ≤ 0.08 | — |
| Others (each)total 0.15 max | ≤ 0.05 | — |
| Al | balance | — |
8011-H28 — frequently asked
What is 8011-H28 used for?
8011-H28 is typically used for pharmaceutical blister and push-through foil, food packaging foil, bottle cap and closure stock, air-conditioner fin stock, cable sheathing strip and container lidding foil. In short: foil and cap closure alloy.
What is the yield strength of 8011-H28?
8011-H28 has a typical yield strength of 160 MPa (23.2 ksi) and a tensile strength of 185 MPa (26.8 ksi) — weaker than 61% of aluminum grades. Strength varies by condition: see the 10 listed tempers.
Is 8011-H28 easy to machine?
Not especially — machinability is rated fair (35/100, worse than 86% of aluminum grades). Very soft and gummy — use polished high-rake carbide, high speed, generous coolant/lubricant to avoid built-up edge; rarely machined since it ships as thin strip/foil.
Can 8011-H28 be welded?
Yes — weldability is rated good (58/100). Not heat-treatable, so no HAZ softening problem beyond annealing; TIG/MIG with 1100 or 4043 filler works on strip, but typical foil gauges are joined by adhesive lamination or heat-seal lacquer instead.
What surface finishes work on 8011-H28?
Normally chromate/chrome-free conversion coated then lacquered, printed or PET/PE laminated; anodizing is possible but gives a dull grey film because of the Fe/Si intermetallics.
Can 8011-H28 be formed, bent or molded?
Excellent rollability to <10 µm foil and good drawing/curling in O–H24 tempers; harder H18/H19 tempers are chosen for push-through blister foil where controlled brittleness is wanted.
What is the maximum service temperature of 8011-H28?
8011-H28 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.
Can FabDigit make parts in 8011-H28?
Yes — 8011-H28 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 / EN 546-2 Aluminium and aluminium alloys — foil: mechanical properties — CEN (2019)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- 8011 foil / closure stock technical data — Aluminium foil producers (Hydro, Novelis, ) (2023)
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.