Aluminum 1100A-H12
Temper
AA 1100A · EN AW-1100A
H12 = strain hardened, quarter hard
Pick when annealed sheet is too limp but full forming ductility must be kept.
Values for the H12 condition
Other 1100A tempers and conditions
1100A is listed in 9 conditions; see the grade overview at 1100A.
Compare all 9 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Pick for maximum ductility: deep drawing, spinning, hand forming, foil and fin stock. | 34 | 90 | 40 | 23 HB | 59 % IACS |
Strain hardened from hot working only | Pick for hot-rolled plate, extrusions and thick sections where only modest strength above annealed is needed. | 45 | 95 | 25 | 25 HB | 59 % IACS |
Strain hardened and partially annealed, quarter hard | Pick when H12 strength is wanted with more uniform ductility and less springback after forming. | 95 | 110 | 14 | 27 HB | 58 % IACS |
H12This page Strain hardened, quarter hard | Pick when annealed sheet is too limp but full forming ductility must be kept. | 105 | 110 | 12 | 28 HB | 57 % IACS |
Strain hardened and partially annealed, half hard | Pick for H14-level strength in deep-drawn or roll-formed parts where cracking risk must be lower. | 105 | 125 | 12 | 31 HB | 57 % IACS |
H14Default Strain hardened, half hard | Default stock condition: best all-round balance of stiffness in handling, bendability and price for sheet and coil. | 115 | 125 | 9 | 32 HB | 57 % IACS |
Strain hardened and partially annealed, three-quarter hard | Pick for higher-strength strip/coil that still needs moderate bending, e.g. shutters, fin and closure stock. | 130 | 145 | 8 | 36 HB | 57 % IACS |
Strain hardened, three-quarter hard | Pick for flat panels, shields and stampings needing more stiffness with only mild bending. | 140 | 145 | 6 | 38 HB | 57 % IACS |
Strain hardened, full hard | Pick for maximum strength/hardness in pure aluminium — flat strip, foil stock, blanking parts with little forming. | 150 | 165 | 5 | 44 HB | 57 % IACS |
What is 1100A-H12?
1100A-H12 is 1100A in the H12 temper — pick when annealed sheet is too limp but full forming ductility must be kept. 1100A-H12 has a yield strength of 105 MPa (15.2 ksi) and a tensile strength of 110 MPa (16 ksi) — weaker than 84% of aluminum grades. Elongation at break is 12% and the elastic modulus is 69 GPa (10 Msi). 1100A-H12 has a density of 2.71 g/cm³ (0.0979 lb/in³), heavier than 51% of aluminum grades. It melts at 643°C (1,189 °F). H14 is the default condition FabDigit quotes; H12 is available on request or by drawing note.
Advantages
- Readily welded — 95/100, better than 99% of aluminum grades
- Conducts heat well — 222 W/m·K (128.3 BTU/hr·ft·°F), better than 94% of aluminum grades
- High electrical conductivity — 57 % IACS, better than 94% of aluminum grades
- Good corrosion resistance — 78/100, better than 94% of aluminum grades
- Forms and bends easily — 88/100, better than 92% of aluminum grades
Limitations
- Difficult to machine — 33/100, worse than 87% of aluminum grades
- Low strength — 105 MPa (15.2 ksi), worse than 84% of aluminum grades
1100A-H12 properties
Typical room-temperature values for 1100A-H12; 14 are specific to this condition. Other listed values are 1100A reference data and may not represent this condition. Bars are the position among aluminum grades.
Physical3
1100A-H12 has a density of 2.71 g/cm³ (0.0979 lb/in³), heavier than 51% of aluminum grades. It melts at 643°C (1,189 °F).
Mechanical11
1100A-H12 has a yield strength of 105 MPa (15.2 ksi) and a tensile strength of 110 MPa (16 ksi) — weaker than 84% of aluminum grades. Elongation at break is 12% and the elastic modulus is 69 GPa (10 Msi).
Thermal6
1100A-H12 is rated for continuous service to 150°C (302 °F). It conducts heat at 222 W/m·K (128.3 BTU/hr·ft·°F), better than 94% of aluminum grades. Thermal expansion is 23.6 µm/m·K (13.1 µin/in·°F).
Electrical3
1100A-H12 conducts electricity at 57 % IACS, better than 94% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is very good (78/100), better than 94% of aluminum grades.
Sustainability4
Producing a kilogram of 1100A-H12 takes about 200 MJ of energy and emits 11.5 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 30%.
Manufacturability7
1100A-H12's machinability is poor (33/100, worse than 87% of aluminum grades); weldability excellent (95/100); formability excellent (88/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 1100A-H12
Is 1100A easy to machine?
Very gummy in O/H12 — use polished high-rake carbide, high surface speed, sharp tools and flood lubricant; H18 chips break better and gives cleaner threads.
Can 1100A be welded?
Excellent with GTAW/GMAW using ER1100 (or ER4043 for crack-sensitive joints), resistance and brazing; weld metal reverts to near-annealed strength.
Can 1100A be formed, bent or molded?
Outstanding cold formability — deep draw, spin, roll-form and hem in O/H12; interanneal at 340–415 °C when heavy redrawing is needed.
What surface finishes work on 1100A?
Takes bright and clear sulfuric anodizing, chemical conversion coating, paint and electroplating well; too soft for wear-resistant hard anodize, and mechanical polishing needs light pressure to avoid smearing.
1100A 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+Fecombined limit per EN 573-3 / AA registration | ≤ 0.95 | — |
| Cuintentional addition, raises strength slightly | 0.05 – 0.2 | 0.12 |
| Mn | ≤ 0.05 | — |
| Zn | ≤ 0.1 | — |
| Ticounted with 'others' in some registrations | ≤ 0.05 | — |
| Others (each)total others 0.15 max; 1100A applies slightly tightened impurity control vs 1100 | ≤ 0.05 | — |
| Al | ≥ 99 (balance) | — |
1100A-H12 — frequently asked
What is 1100A-H12 used for?
1100A-H12 is typically used for kitchenware, chemical tanks and general sheet metal fabrication. In short: general-purpose pure aluminum; weldability score 95; slightly stronger than 1050A.
What is the yield strength of 1100A-H12?
1100A-H12 has a typical yield strength of 105 MPa (15.2 ksi) and a tensile strength of 110 MPa (16 ksi) — weaker than 84% of aluminum grades. Strength varies by condition: see the 9 listed tempers.
Is 1100A-H12 easy to machine?
Not especially — machinability is rated poor (33/100, worse than 87% of aluminum grades). Very gummy in O/H12 — use polished high-rake carbide, high surface speed, sharp tools and flood lubricant; H18 chips break better and gives cleaner threads.
Can 1100A-H12 be welded?
Yes — weldability is rated excellent (95/100). Excellent with GTAW/GMAW using ER1100 (or ER4043 for crack-sensitive joints), resistance and brazing; weld metal reverts to near-annealed strength.
What surface finishes work on 1100A-H12?
Takes bright and clear sulfuric anodizing, chemical conversion coating, paint and electroplating well; too soft for wear-resistant hard anodize, and mechanical polishing needs light pressure to avoid smearing.
Can 1100A-H12 be formed, bent or molded?
Outstanding cold formability — deep draw, spin, roll-form and hem in O/H12; interanneal at 340–415 °C when heavy redrawing is needed.
What is the maximum service temperature of 1100A-H12?
1100A-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 1100A-H14 and 1100A-O?
H14 is the default condition — default stock condition: best all-round balance of stiffness in handling, bendability and price for sheet and coil. O: pick for maximum ductility: deep drawing, spinning, hand forming, foil and fin stock. Yield strength is 115 MPa in H14 versus 34 MPa in O.
Sources
- EN 573-3 / EN 485-2 — wrought aluminium chemical composition and sheet properties — CEN (2019)
- ASTM B209 / B209M — Aluminum and Aluminum-Alloy Sheet and Plate — ASTM (2021)
- International Alloy Designations and Chemical Composition Limits (Teal Sheets) — The Aluminum Association (2018)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- Aluminum Standards and Data — The Aluminum Association (2017)
- MMPDS typical property tables for 1100 sheet — Battelle/FAA (2021)
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.