Aluminum 8014-H12
Temper
AA 8014 · UNS A98014 · EN AlFeSiCu
H12 = strain hardened, quarter hard
Light cold work for mild stiffening while keeping high bend ductility.
Values for the H12 condition
Other 8014 tempers and conditions
8014 is listed in 11 conditions; see the grade overview at 8014.
Compare all 11 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Maximum formability and highest thermal conductivity — pick for deep-drawn/embossed foil, container foil and laminate stock. | 40 | 95 | 25 | 23 HB | 55 % IACS |
Slightly strain hardened | Near-O softness with slightly higher strength from levelling/coiling; used where O flatness is hard to hold. | 50 | 100 | 22 | 26 HB | 54 % IACS |
Strain hardened and partially annealed, quarter hard | Soft, high-ductility back-annealed strip for formed fins and laminating foil. | 88 | 115 | 14 | 31 HB | 53.5 % IACS |
H12This page Strain hardened, quarter hard | Light cold work for mild stiffening while keeping high bend ductility. | 90 | 112 | 12 | 30 HB | 53 % IACS |
Strain hardened, half hard | Common half-hard strip temper balancing stiffness and roll-forming ability. | 110 | 128 | 8 | 38 HB | 52.5 % IACS |
H24Default Strain hardened and partially annealed, half hard | The standard heat-exchanger fin-stock condition: enough strength for fin-mill corrugating with retained ductility and good post-braze sag resistance. | 115 | 140 | 6 | 42 HB | 52 % IACS |
Strain hardened, three-quarter hard | Higher strength strip for stiffer fins and semi-rigid containers; bending radii must be generous. | 132 | 148 | 5 | 45 HB | 52 % IACS |
Strain hardened and partially annealed, three-quarter hard | Stronger fin stock for thin-gauge down-gauging where fin collapse resistance matters more than bend ductility. | 135 | 155 | 4 | 47 HB | 52.5 % IACS |
Strain hardened, full hard | Full-hard rolled condition for maximum as-rolled strength and flat, high-tension foil running. | 152 | 168 | 3 | 50 HB | 51.5 % IACS |
Strain hardened and partially annealed, full hard | Full-hard back-annealed strip; maximum strength with slightly better flatness/uniformity than H18. | 155 | 170 | 3 | 51 HB | 52 % IACS |
Strain hardened, extra hard | Heaviest cold reduction, used for very thin as-rolled foil where peak tensile is needed for web handling. | 170 | 185 | 2 | 55 HB | 51 % IACS |
What is 8014-H12?
8014-H12 is 8014 in the H12 temper — light cold work for mild stiffening while keeping high bend ductility. 8014-H12 has a yield strength of 90 MPa (13.1 ksi) and a tensile strength of 112 MPa (16.2 ksi) — weaker than 87% of aluminum grades. Elongation at break is 12% and the elastic modulus is 69 GPa (10 Msi). 8014-H12 has a density of 2.73 g/cm³ (0.0986 lb/in³), heavier than 61% of aluminum grades. It melts at 645°C (1,193 °F). H24 is the default condition FabDigit quotes; H12 is available on request or by drawing note.
Advantages
- Conducts heat well — 201 W/m·K (116.1 BTU/hr·ft·°F), better than 92% of aluminum grades
- High electrical conductivity — 53 % IACS, better than 92% of aluminum grades
- Forms and bends easily — 82/100, better than 91% of aluminum grades
Limitations
- Difficult to machine — 28/100, worse than 94% of aluminum grades
- Low strength — 90 MPa (13.1 ksi), worse than 87% of aluminum grades
- Hard to polish — 45/100, worse than 76% of aluminum grades
8014-H12 properties
Typical room-temperature values for 8014-H12; 18 are specific to this condition. Other listed values are 8014 reference data and may not represent this condition. Bars are the position among aluminum grades.
Physical3
8014-H12 has a density of 2.73 g/cm³ (0.0986 lb/in³), heavier than 61% of aluminum grades. It melts at 645°C (1,193 °F).
Mechanical11
8014-H12 has a yield strength of 90 MPa (13.1 ksi) and a tensile strength of 112 MPa (16.2 ksi) — weaker than 87% of aluminum grades. Elongation at break is 12% and the elastic modulus is 69 GPa (10 Msi).
Thermal6
8014-H12 is rated for continuous service to 150°C (302 °F). It conducts heat at 201 W/m·K (116.1 BTU/hr·ft·°F), better than 92% of aluminum grades. Thermal expansion is 23.5 µm/m·K (13.1 µin/in·°F).
Electrical3
8014-H12 conducts electricity at 53 % IACS, better than 92% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is good (62/100), better than 67% of aluminum grades.
Sustainability4
Producing a kilogram of 8014-H12 takes about 200 MJ of energy and emits 12.5 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 35%.
Manufacturability7
8014-H12's machinability is poor (28/100, worse than 94% of aluminum grades); weldability very good (70/100); formability very good (82/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 8014-H12
Is 8014 easy to machine?
Rarely machined — very soft and gummy; if slitting/blanking, use sharp PCD or polished carbide, high rake, generous lubrication and tight die clearances to avoid burrs and web tearing.
Can 8014 be welded?
Resistance and TIG/MIG welding are feasible in thicker gauges with 4043/1100 filler, but in service the alloy is normally joined by controlled-atmosphere brazing (as fin against clad tube) or by adhesive lamination.
Can 8014 be formed, bent or molded?
Excellent cold rollability down to foil gauges; O/H22 for deep forming and embossing, H24/H26 for fin-mill corrugating — avoid tight bends in H18/H19 where elongation is only 1–3 %.
What surface finishes work on 8014?
Usually supplied bare, degreased, or with hydrophilic/epoxy coil coatings; sulfuric anodizing is protective but grey and mottled owing to Fe-rich intermetallics, so chemical conversion or organic coating is preferred.
8014 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 |
|---|---|---|
| SiSi+Fe control the intermetallic dispersion | ≤ 0.3 | 0.15 |
| Feprincipal alloying element, forms Al-Fe(-Mn,Si) particles | 1.2 – 1.6 | 1.4 |
| Cu | ≤ 0.2 | 0.05 |
| Mnraises strength and anti-sag behaviour vs 8011 | 0.2 – 0.6 | 0.35 |
| Mg | ≤ 0.1 | — |
| Zn | ≤ 0.1 | — |
| Others (each) | ≤ 0.05 | — |
| Others (total) | ≤ 0.15 | — |
| Al | balance | — |
8014-H12 — frequently asked
What is 8014-H12 used for?
8014-H12 is typically used for foil stock, fin stock and closures. In short: stronger than 8011 foil; fin and foil rolling stock; not a machining alloy.
What is the yield strength of 8014-H12?
8014-H12 has a typical yield strength of 90 MPa (13.1 ksi) and a tensile strength of 112 MPa (16.2 ksi) — weaker than 87% of aluminum grades. Strength varies by condition: see the 11 listed tempers.
Is 8014-H12 easy to machine?
Not especially — machinability is rated poor (28/100, worse than 94% of aluminum grades). Rarely machined — very soft and gummy; if slitting/blanking, use sharp PCD or polished carbide, high rake, generous lubrication and tight die clearances to avoid burrs and web tearing.
Can 8014-H12 be welded?
Yes — weldability is rated very good (70/100). Resistance and TIG/MIG welding are feasible in thicker gauges with 4043/1100 filler, but in service the alloy is normally joined by controlled-atmosphere brazing (as fin against clad tube) or by adhesive lamination.
What surface finishes work on 8014-H12?
Usually supplied bare, degreased, or with hydrophilic/epoxy coil coatings; sulfuric anodizing is protective but grey and mottled owing to Fe-rich intermetallics, so chemical conversion or organic coating is preferred.
Can 8014-H12 be formed, bent or molded?
Excellent cold rollability down to foil gauges; O/H22 for deep forming and embossing, H24/H26 for fin-mill corrugating — avoid tight bends in H18/H19 where elongation is only 1–3 %.
What is the maximum service temperature of 8014-H12?
8014-H12 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 8014-H24 and 8014-O?
H24 is the default condition — the standard heat-exchanger fin-stock condition: enough strength for fin-mill corrugating with retained ductility and good post-braze sag resistance. O: maximum formability and highest thermal conductivity — pick for deep-drawn/embossed foil, container foil and laminate stock. Yield strength is 115 MPa in H24 versus 40 MPa in O.
Sources
- 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 and Special-Purpose Materials — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials — ASM International (2005)
- GB/T 3198 / EN 546 Aluminium foil — SAC / CEN (2020)
- Heat-exchanger fin stock and container foil alloy datasheets (8011/8014/8079 family) — various aluminium rolling mills (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.