Aluminum 5154A-H12
Temper
AA 5154A · EN AW-5154A · BS N5
H12 = strain hardened, quarter hard
Choose when moderate strength is needed with some remaining bending ability and no stabilizing treatment.
Values for the H12 condition
Other 5154A tempers and conditions
5154A is listed in 17 conditions; see the grade overview at 5154A.
Compare all 17 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Slightly strain hardened | Standard EN condition for plate/extrusion supplied essentially soft but with straightening/levelling work; good for welded fabrication. | 105 | 230 | 22 | 60 HB | — |
Annealed | Pick for maximum formability: deep drawing, spinning and tight bends before any welding. | 110 | 240 | 26 | 58 HB | 32 % IACS |
As fabricated | Use for hot-rolled plate, extrusions or forgings where properties are not guaranteed and the part will be further worked. | 115 | 240 | 22 | 60 HB | 32 % IACS |
Strain hardened from hot working only | Common for hot-rolled plate and extruded shapes used in welded marine and pressure structures. | 120 | 240 | 20 | 63 HB | 32 % IACS |
H22Default Strain hardened and partially annealed, quarter hard | Most commonly stocked EN sheet/plate condition: balanced strength, forming ability and stable properties for marine and tank work. | 195 | 265 | 12 | 67 HB | 32 % IACS |
Strain hardened and stabilized, quarter hard | Stabilized quarter-hard temper preferred where long-term property stability and SCC resistance matter (marine hulls, tanks). | 205 | 270 | 13 | 67 HB | 32 % IACS |
H12This page Strain hardened, quarter hard | Choose when moderate strength is needed with some remaining bending ability and no stabilizing treatment. | 215 | 265 | 8 | 70 HB | 32 % IACS |
Strain hardened and partially annealed, half hard | Half-hard partially annealed sheet with better bend behaviour than H14 at similar strength. | 215 | 285 | 9 | 73 HB | — |
Strain hardened and stabilized, half hard | The workhorse half-hard marine sheet temper: good strength with stable, sensitization-resistant structure. | 230 | 290 | 10 | 73 HB | — |
Strain hardened, half hard | General-purpose half-hard sheet for panels needing higher yield with light forming only. | 245 | 285 | 6 | 75 HB | 32 % IACS |
Strain hardened and partially annealed, three-quarter hard | For higher-strength panels that still need a modest bend radius. | 245 | 305 | 6 | 78 HB | 32 % IACS |
Strain hardened and stabilized, three-quarter hard | Higher-strength stabilized strip for containers, closures and stiff formed sections. | 250 | 310 | 8 | 78 HB | 32 % IACS |
Strain hardened, three-quarter hard | Intermediate step between H14 and H18 for stiff flat panels with minimal forming. | 265 | 305 | 4 | 80 HB | 32 % IACS |
Strain hardened and partially annealed, full hard | Full-hard stabilized strip where maximum strength is needed with slightly better ductility than H18. | 265 | 325 | 5 | 82 HB | 32 % IACS |
Strain hardened and stabilized, full hard | Maximum stabilized strength temper for thin gauges; limited bending, best for flat or lightly formed parts. | 270 | 330 | 6 | 80 HB | 32 % IACS |
Strain hardened, full hard | Maximum strain-hardened strength for flat parts, shims and strip where ductility is not required. | 285 | 325 | 3 | 85 HB | 32 % IACS |
Strain hardened, extra hard | Thin strip/foil condition for the highest as-rolled strength; essentially non-formable. | 305 | 345 | 2 | 88 HB | 32 % IACS |
What is 5154A-H12?
5154A-H12 is 5154A in the H12 temper — choose when moderate strength is needed with some remaining bending ability and no stabilizing treatment. 5154A-H12 has a yield strength of 215 MPa (31.2 ksi) and a tensile strength of 265 MPa (38.4 ksi) — stronger than 58% of aluminum grades. Elongation at break is 8% and the elastic modulus is 70 GPa (10.2 Msi). 5154A-H12 has a density of 2.66 g/cm³ (0.0961 lb/in³), lighter than 84% of aluminum grades. It melts at 590°C (1,094 °F). H22 is the default condition FabDigit quotes; H12 is available on request or by drawing note.
Advantages
- Good corrosion resistance — 78/100, better than 94% of aluminum grades
- Tough — resists crack growth — 34 MPa·√m (30.9 ksi·√in), better than 90% of aluminum grades
- Readily welded — 90/100, better than 90% of aluminum grades
- Forms and bends easily — 60/100, better than 77% of aluminum grades
Limitations
- Limited service temperature — 65°C (149 °F), worse than 97% of aluminum grades
5154A-H12 properties
Typical room-temperature values for 5154A-H12; 22 are specific to this condition. Other listed values are 5154A reference data and may not represent this condition. Bars are the position among aluminum grades.
Physical3
5154A-H12 has a density of 2.66 g/cm³ (0.0961 lb/in³), lighter than 84% of aluminum grades. It melts at 590°C (1,094 °F).
Mechanical12
5154A-H12 has a yield strength of 215 MPa (31.2 ksi) and a tensile strength of 265 MPa (38.4 ksi) — stronger than 58% of aluminum grades. Elongation at break is 8% and the elastic modulus is 70 GPa (10.2 Msi).
Thermal6
5154A-H12 is rated for continuous service to 65°C (149 °F). It conducts heat at 126 W/m·K (72.8 BTU/hr·ft·°F), worse than 70% of aluminum grades. Thermal expansion is 23.7 µm/m·K (13.2 µin/in·°F).
Electrical3
5154A-H12 conducts electricity at 32 % IACS, worse than 63% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is very good (78/100), better than 94% of aluminum grades.
Sustainability4
Producing a kilogram of 5154A-H12 takes about 200 MJ of energy and emits 12 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 35%.
Manufacturability8
5154A-H12's machinability is fair (45/100, worse than 72% of aluminum grades); weldability excellent (90/100); formability good (60/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 5154A-H12
Is 5154A easy to machine?
Gummy in soft tempers — use sharp polished high-rake carbide, high speed, generous lubricant; chip control improves markedly in H1x/H3x tempers.
Can 5154A be welded?
Excellent with GMAW/GTAW using 5356 or 5183 filler; do not use 4043 (brittle Mg2Si), and expect the HAZ to drop back to near-O strength.
Can 5154A be formed, bent or molded?
Very good cold formability in O/H111; for H22–H38 increase bend radii and bend across the rolling direction; hot forming above ~200 °C risks sensitization if followed by service warm.
What surface finishes work on 5154A?
Anodizes clear to light grey, takes conversion coating and paint well; avoid mercury-bearing or strongly alkaline cleaners and keep service below ~65 °C to prevent grain-boundary β-phase precipitation.
5154A 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 max 0.60 in some product specs | ≤ 0.5 | 0.2 |
| Fe | ≤ 0.5 | 0.3 |
| Cu | ≤ 0.1 | 0.03 |
| MnMn+Cr 0.10–0.50 | ≤ 0.5 | 0.15 |
| Mgprincipal strengthening solute | 3.1 – 3.9 | 3.5 |
| CrMn+Cr 0.10–0.50 | ≤ 0.25 | 0.1 |
| Zn | ≤ 0.2 | 0.05 |
| Tigrain refiner | ≤ 0.2 | 0.03 |
| Others (each) | ≤ 0.05 | — |
| Others (total) | ≤ 0.15 | — |
| Al | balance | — |
5154A-H12 — frequently asked
What is 5154A-H12 used for?
5154A-H12 is typically used for pressure vessels, structural sheet, shipbuilding and welded assemblies. In short: EN counterpart to 5154; weldable marine-grade sheet; 65 °C service ceiling.
What is the yield strength of 5154A-H12?
5154A-H12 has a typical yield strength of 215 MPa (31.2 ksi) and a tensile strength of 265 MPa (38.4 ksi) — stronger than 58% of aluminum grades. Strength varies by condition: see the 17 listed tempers.
Is 5154A-H12 easy to machine?
Reasonably — machinability is rated fair (45/100, worse than 72% of aluminum grades). Gummy in soft tempers — use sharp polished high-rake carbide, high speed, generous lubricant; chip control improves markedly in H1x/H3x tempers.
Can 5154A-H12 be welded?
Yes — weldability is rated excellent (90/100). Excellent with GMAW/GTAW using 5356 or 5183 filler; do not use 4043 (brittle Mg2Si), and expect the HAZ to drop back to near-O strength.
What surface finishes work on 5154A-H12?
Anodizes clear to light grey, takes conversion coating and paint well; avoid mercury-bearing or strongly alkaline cleaners and keep service below ~65 °C to prevent grain-boundary β-phase precipitation.
Can 5154A-H12 be formed, bent or molded?
Very good cold formability in O/H111; for H22–H38 increase bend radii and bend across the rolling direction; hot forming above ~200 °C risks sensitization if followed by service warm.
What is the maximum service temperature of 5154A-H12?
5154A-H12 is rated for continuous use to about 65°C (149 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 5154A-H22 and 5154A-H19?
H22 is the default condition — most commonly stocked EN sheet/plate condition: balanced strength, forming ability and stable properties for marine and tank work. H19: thin strip/foil condition for the highest as-rolled strength; essentially non-formable. Yield strength is 195 MPa in H22 versus 305 MPa in H19.
Sources
- EN 573-3 Aluminium and aluminium alloys — chemical composition of wrought products — CEN (2019)
- EN 485-2 Aluminium and aluminium alloys — sheet, strip and plate: mechanical properties — CEN (2016)
- EN 515 Aluminium and aluminium alloys — temper designations — CEN (2017)
- ASM Handbook Vol. 2: Properties and Selection — Nonferrous Alloys — ASM International (1990)
- International Alloy Designations and Chemical Composition Limits (Teal Sheets) — The Aluminum Association (2018)
- BS 1470 / N5 aluminium sheet designation (historical UK) — BSI (1987)
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.