Aluminum 5019 · temper
Aluminum 5019-H24
Properties of the H24 condition, compared with the other 5019 tempers.
Half-hard stabilised Al-5Mg sheet; common bending/forming temper for high-Mg architectural and marine panels.
What is 5019-H24?
5019-H24 is 5019 in the H24 temper — half-hard stabilised Al-5Mg sheet; common bending/forming temper for high-Mg architectural and marine panels. 5019-H24 has a yield strength of 245 MPa (35.5 ksi) and a tensile strength of 330 MPa (47.9 ksi) — stronger than 64% of aluminum grades. Elongation at break is 11% and the elastic modulus is 70 GPa (10.2 Msi). 5019-H24 has a density of 2.64 g/cm³ (0.0954 lb/in³), lighter than 94% of aluminum grades. It melts at 570°C (1,058 °F).
Advantages
- Polishes to a fine finish — 73/100, better than 90% of aluminum grades
- Good corrosion resistance — 74/100, better than 87% of aluminum grades
- Tough — resists crack growth — 32 MPa·√m (29.1 ksi·√in), better than 83% of aluminum grades
Limitations
- Limited service temperature — 65°C (149 °F), worse than 97% of aluminum grades
- Poor heat conductor — 115 W/m·K (66.4 BTU/hr·ft·°F), worse than 85% of aluminum grades
- Low electrical conductivity — 29 % IACS, worse than 78% of aluminum grades
5019-H24 properties
Typical room-temperature values for 5019-H24 — 33 properties are specific to this condition; the rest are grade-level values shared by every 5019 temper. Each bar shows where the value sits among the aluminum grades in FabDigit's library — further right is higher.
Physical3
5019-H24 has a density of 2.64 g/cm³ (0.0954 lb/in³), lighter than 94% of aluminum grades. It melts at 570°C (1,058 °F).
Mechanical12
5019-H24 has a yield strength of 245 MPa (35.5 ksi) and a tensile strength of 330 MPa (47.9 ksi) — stronger than 64% of aluminum grades. Elongation at break is 11% and the elastic modulus is 70 GPa (10.2 Msi).
Thermal6
5019-H24 is rated for continuous service to 65°C (149 °F). It conducts heat at 115 W/m·K (66.4 BTU/hr·ft·°F), worse than 85% of aluminum grades. Thermal expansion is 24.2 µm/m·K (13.4 µin/in·°F).
Electrical3
5019-H24 conducts electricity at 29 % IACS, worse than 78% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is very good (74/100), better than 87% of aluminum grades.
Sustainability4
Producing a kilogram of 5019-H24 takes about 155 MJ of energy and emits 12 kg of CO₂ — less than 94% of aluminum grades. Typical recycled content is 35%.
Manufacturability8
5019-H24's machinability is fair (52/100, worse than 62% of aluminum grades); weldability very good (78/100); formability good (55/100).
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Other 5019 tempers and conditions
5019 is also supplied in 15 other conditions. The full side-by-side table is on the 5019 overview.
- H36Cold worked and low-temperature stabilised to three-quarter hard; high strength with reduced age-softening and improved SCC stability for high-Mg sheet.300 MPa yield · 100 HB
- H16Three-quarter-hard Al-5Mg sheet with high strength and limited cold-forming capability.295 MPa yield · 98 HB
- H34Choose when higher strength and stiffness-per-thickness matter more than bending, e.g. panels and tank walls.285 MPa yield · 100 HB
- H26Three-quarter-hard stabilised Al-5Mg sheet: near-H16 strength with slightly improved ductility and forming behaviour.280 MPa yield · 95 HB
- H14Half-hard cold-worked Al-5Mg sheet offering a balance of high strength and workable ductility.260 MPa yield · 90 HB
- H24Half-hard stabilised Al-5Mg sheet; common bending/forming temper for high-Mg architectural and marine panels.245 MPa yield · 88 HB
- H116Specify for marine hulls and seawater-immersed plate: same strength class as H321 but with mandatory ASTM G66/G67 exfoliation and sensitization acceptance.240 MPa yield · 90 HB
- H32General-purpose sheet temper balancing moderate strength with usable bending; stabilization prevents age softening.235 MPa yield · 87 HB
- H321The workhorse plate temper for welded marine, tank and offshore structures — good strength with controlled sensitization resistance.230 MPa yield · 88 HB
- H12Quarter-hard cold-rolled Al-5Mg sheet: moderate strength gain over O temper with good remaining ductility.215 MPa yield · 80 HB
- H22Cold-worked then partially annealed to quarter-hard level; stabilised structure with better ductility than H12 at similar strength.205 MPa yield · 78 HB
- FAs-fabricated Al-5Mg product with no mechanical property limits guaranteed; strength between annealed and lightly strain-hardened tempers.140 MPa yield · 70 HB
- OPick for maximum cold formability — deep drawing, severe bending, spinning — where strength is not critical.135 MPa yield · 68 HB
Working with 5019-H24
Is 5019 easy to machine?
Gummy and adhesive like all high-Mg alloys — use sharp polished high-rake carbide, high surface speed, generous lubrication and chip evacuation; hard tempers cut cleaner than O.
Can 5019 be welded?
Excellent with GMAW/GTAW using 5183 or 5356 filler; no post-weld heat treatment, but keep interpass temperature low and avoid heating above ~65 °C in service to prevent sensitization.
Can 5019 be formed, bent or molded?
Form in O/H111 for tight radii; H32 and harder tempers need generous bend radii and are prone to Lüders/orange-peel marking — warm forming 120–200 °C helps but must be brief.
What surface finishes work on 5019?
Anodizes bright and uniformly (clear or hard coat), takes chemical conversion coating and paint well; polishing gives a good marine trim finish, and isolate from steel/copper to avoid galvanic attack.
5019 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 | ≤ 0.4 | 0.15 |
| Fe | ≤ 0.5 | 0.25 |
| Cu | ≤ 0.1 | 0.03 |
| Mn | 0.1 – 0.6 | 0.35 |
| Mgprincipal alloying element | 4.5 – 5.6 | 5 |
| Cr | ≤ 0.2 | 0.08 |
| Zn | ≤ 0.2 | 0.05 |
| Ti | ≤ 0.2 | 0.05 |
| Others (each)0.15 total | ≤ 0.05 | — |
| Al | balance | — |
5019-H24 — frequently asked
What is 5019-H24 used for?
5019-H24 is typically used for naval armour plate, ship superstructures and deckhouses, marine and shore storage tanks, offshore platform structures, pressure-vessel shells and welded hull stiffeners and extrusions. In short: high-Mg armour plate; saltwater grade.
What is the yield strength of 5019-H24?
5019-H24 has a typical yield strength of 245 MPa (35.5 ksi) and a tensile strength of 330 MPa (47.9 ksi) — stronger than 64% of aluminum grades. Strength varies by condition: see the 16 listed tempers.
Is 5019-H24 easy to machine?
Reasonably — machinability is rated fair (52/100, worse than 62% of aluminum grades). Gummy and adhesive like all high-Mg alloys — use sharp polished high-rake carbide, high surface speed, generous lubrication and chip evacuation; hard tempers cut cleaner than O.
Can 5019-H24 be welded?
Yes — weldability is rated very good (78/100). Excellent with GMAW/GTAW using 5183 or 5356 filler; no post-weld heat treatment, but keep interpass temperature low and avoid heating above ~65 °C in service to prevent sensitization.
What surface finishes work on 5019-H24?
Anodizes bright and uniformly (clear or hard coat), takes chemical conversion coating and paint well; polishing gives a good marine trim finish, and isolate from steel/copper to avoid galvanic attack.
Can 5019-H24 be formed, bent or molded?
Form in O/H111 for tight radii; H32 and harder tempers need generous bend radii and are prone to Lüders/orange-peel marking — warm forming 120–200 °C helps but must be brief.
What is the maximum service temperature of 5019-H24?
5019-H24 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.
Can FabDigit make parts in 5019-H24?
Yes — 5019-H24 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
- 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)
- ASTM B928 High-Magnesium Aluminum-Alloy Sheet and Plate for Marine Service — ASTM (2019)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials (aluminium in marine service) — ASM International (2005)
- Marine aluminium plate (Al-Mg 5xxx) datasheets — Constellium / Aleris (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.