Aluminum 1100-H22
Temper
AA 1100 · UNS A91100 · ASTM AWS A5.10 ER1100 · EN Al99.0Cu, AW-1100 · JIS A1100, A1100WY
H22 = strain hardened and partially annealed, quarter hard
Same strength class as H12 but with better ductility and flatness stability from the partial anneal.
Values for the H22 condition
Other 1100 tempers and conditions
1100 is listed in 12 conditions; see the grade overview at 1100.
Compare all 12 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Pick for maximum ductility — deep drawing, spinning, severe bending and highest conductivity. | 34 | 90 | 40 | 23 HB | 59 % IACS |
Strain hardened from hot working only | Standard temper for thick 1100 plate and extruded shapes where cold rolling is not applicable. | 45 | 95 | 25 | 25 HB | 59 % IACS |
Strain hardened, hot-rolled plate temper | Commercially pure 1100 aluminium supplied as hot-rolled plate with a small amount of incidental strain hardening, giving strength just above the annealed condition while retaining excellent formability, weldability and conductivity. | 90 | 110 | 14 | 28 HB | 58.5 % IACS |
H22This page Strain hardened and partially annealed, quarter hard | Same strength class as H12 but with better ductility and flatness stability from the partial anneal. | 90 | 110 | 20 | 27 HB | 58 % IACS |
Strain hardened and partially annealed, half hard | H14-level strength with extra forming reserve — common for deep-drawn and spun 1100 parts. | 100 | 125 | 15 | 31 HB | 57 % IACS |
Strain hardened, quarter hard | Light cold work — a compromise when O is too floppy but forming is still moderately severe. | 105 | 110 | 17 | 28 HB | 57 % IACS |
Strain hardened, half hard | The default stock temper for 1100 sheet and coil — usable strength with still-excellent bending and welding. | 115 | 125 | 12 | 32 HB | 57 % IACS |
Strain hardened and partially annealed, three-quarter hard | H16 strength level with improved bend behaviour for roll-formed profiles. | 125 | 145 | 11 | 37 HB | 57 % IACS |
Strain hardened, three-quarter hard | Choose when a stiffer, more dent-resistant panel is needed and only gentle bends are required. | 140 | 145 | 9 | 38 HB | 57 % IACS |
Strain hardened and partially annealed, full hard | Full-hard strength with stabilised, flat coil for high-speed stamping. | 145 | 165 | 7 | 43 HB | 57 % IACS |
Strain hardened, full hard | Maximum cold-worked strength for flat parts, foil stock and stampings needing springiness rather than bendability. | 150 | 165 | 6 | 44 HB | 57 % IACS |
Strain hardened, extra hard | Very heavily rolled foil and fin stock where the highest as-rolled strength is needed. | 170 | 185 | 3 | 48 HB | 57 % IACS |
What is 1100-H22?
1100-H22 is 1100 in the H22 temper — same strength class as H12 but with better ductility and flatness stability from the partial anneal. 1100-H22 has a yield strength of 90 MPa (13.1 ksi) and a tensile strength of 110 MPa (16 ksi) — weaker than 87% of aluminum grades. Elongation at break is 20% and the elastic modulus is 69 GPa (10 Msi). 1100-H22 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).
Advantages
- Readily welded — 95/100, better than 99% of aluminum grades
- Good corrosion resistance — 79/100, better than 96% of aluminum grades
- High electrical conductivity — 58 % IACS, better than 95% of aluminum grades
- Forms and bends easily — 93/100, better than 95% of aluminum grades
- Conducts heat well — 222 W/m·K (128.3 BTU/hr·ft·°F), better than 94% of aluminum grades
Limitations
- Difficult to machine — 32/100, worse than 89% of aluminum grades
- Low strength — 90 MPa (13.1 ksi), worse than 87% of aluminum grades
1100-H22 properties
Typical room-temperature values for 1100-H22; 18 are specific to this condition. Other listed values are 1100 reference data and may not represent this condition. Bars are the position among aluminum grades.
Physical3
1100-H22 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
1100-H22 has a yield strength of 90 MPa (13.1 ksi) and a tensile strength of 110 MPa (16 ksi) — weaker than 87% of aluminum grades. Elongation at break is 20% and the elastic modulus is 69 GPa (10 Msi).
Thermal6
1100-H22 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
1100-H22 conducts electricity at 58 % IACS, better than 95% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is very good (79/100), better than 96% of aluminum grades.
Sustainability4
Producing a kilogram of 1100-H22 takes about 210 MJ of energy and emits 12.5 kg of CO₂ — more than 88% of aluminum grades. Typical recycled content is 25%.
Manufacturability8
1100-H22's machinability is poor (32/100, worse than 89% of aluminum grades); weldability excellent (95/100); formability excellent (93/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 1100-H22
Is 1100 easy to machine?
Very gummy — use sharp polished high-rake carbide, high surface speed, generous flood or mist lubrication and large chip clearance to avoid built-up edge; harder H16/H18 tempers finish noticeably better.
Can 1100 be welded?
Excellent by GTAW/GMAW/resistance and brazing; use ER1100 (or ER4043 where cracking is a concern) and accept that the HAZ reverts to O-temper strength.
Can 1100 be formed, bent or molded?
Outstanding cold formability — deep draws, spinning and tight bends (≈0–1 t bend radius in O/H12); anneal at 340–400 °C between severe forming steps.
What surface finishes work on 1100?
Anodizes bright and clear, takes dyes evenly, buffs to a high specular reflector finish, and accepts chromate/chemical conversion, paint and electroplating well.
1100 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 Si plus Fe limit per AA/ASTM B209 | ≤ 0.95 | — |
| Cuintentional addition for strength | 0.05 – 0.2 | 0.12 |
| Mn | ≤ 0.05 | — |
| Zn | ≤ 0.1 | — |
| Others (each) | ≤ 0.05 | — |
| Others (total) | ≤ 0.15 | — |
| Al99.00 % minimum aluminium | ≥ 99 (balance) | — |
1100-H22 — frequently asked
What is 1100-H22 used for?
1100-H22 is typically used for heat-exchanger fins, deep-drawn and spun parts, chemical vessels and tank liners, lighting reflectors, nameplates and signage and ER1100 welding and brazing filler. In short: ultra-soft; maximum conductivity.
What is the yield strength of 1100-H22?
1100-H22 has a typical yield strength of 90 MPa (13.1 ksi) and a tensile strength of 110 MPa (16 ksi) — weaker than 87% of aluminum grades. Strength varies by condition: see the 12 listed tempers.
Is 1100-H22 easy to machine?
Not especially — machinability is rated poor (32/100, worse than 89% of aluminum grades). Very gummy — use sharp polished high-rake carbide, high surface speed, generous flood or mist lubrication and large chip clearance to avoid built-up edge; harder H16/H18 tempers finish noticeably better.
Can 1100-H22 be welded?
Yes — weldability is rated excellent (95/100). Excellent by GTAW/GMAW/resistance and brazing; use ER1100 (or ER4043 where cracking is a concern) and accept that the HAZ reverts to O-temper strength.
What surface finishes work on 1100-H22?
Anodizes bright and clear, takes dyes evenly, buffs to a high specular reflector finish, and accepts chromate/chemical conversion, paint and electroplating well.
Can 1100-H22 be formed, bent or molded?
Outstanding cold formability — deep draws, spinning and tight bends (≈0–1 t bend radius in O/H12); anneal at 340–400 °C between severe forming steps.
What is the maximum service temperature of 1100-H22?
1100-H22 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.
Can FabDigit make parts in 1100-H22?
Yes — 1100-H22 is available for CNC machining and sheet metal with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- ASTM B209 / B209M — Aluminum and Aluminum-Alloy Sheet and Plate — ASTM International (2021)
- 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)
- JIS H 4000 — Aluminium and aluminium alloy sheets, strips and plates — JSA (2014)
- MMPDS-style typical mechanical property tables for 1000-series wrought products — Battelle / FAA (2022)
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.