Aluminum 5019-H112
Temper
AA 5019 · UNS A95019 · EN AW-5019, AW 5019
H112 = strain hardened from hot working only
Hot-rolled thick plate or extrusions where properties come from hot work; the usual choice for heavy welded marine sections.
Values for the H112 condition
Other 5019 tempers and conditions
5019 is listed in 16 conditions; see the grade overview at 5019.
Compare all 16 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Pick for maximum cold formability — deep drawing, severe bending, spinning — where strength is not critical. | 135 | 280 | 24 | 68 HB | 29 % IACS |
As fabricated | As-fabricated Al-5Mg product with no mechanical property limits guaranteed; strength between annealed and lightly strain-hardened tempers. | 140 | 280 | 20 | 70 HB | 29 % IACS |
Slightly strain hardened | Standard soft plate/extrusion temper for welded structures needing good bending with minimum guaranteed strength. | 145 | 290 | 21 | 72 HB | 29 % IACS |
H112This page Strain hardened from hot working only | Hot-rolled thick plate or extrusions where properties come from hot work; the usual choice for heavy welded marine sections. | 160 | 300 | 17 | 76 HB | 29 % IACS |
Strain hardened and partially annealed, quarter hard | Cold-worked then partially annealed to quarter-hard level; stabilised structure with better ductility than H12 at similar strength. | 205 | 300 | 14 | 78 HB | 29 % IACS |
Strain hardened, quarter hard | Quarter-hard cold-rolled Al-5Mg sheet: moderate strength gain over O temper with good remaining ductility. | 215 | 305 | 12 | 80 HB | 29 % IACS |
Strain hardened and stabilized, marine temper | The workhorse plate temper for welded marine, tank and offshore structures — good strength with controlled sensitization resistance. | 230 | 335 | 13 | 88 HB | 28 % IACS |
Strain hardened and stabilized, quarter hard | General-purpose sheet temper balancing moderate strength with usable bending; stabilization prevents age softening. | 235 | 330 | 12 | 87 HB | 28 % IACS |
Strain hardened, corrosion-resistant marine temper | Specify for marine hulls and seawater-immersed plate: same strength class as H321 but with mandatory ASTM G66/G67 exfoliation and sensitization acceptance. | 240 | 340 | 12 | 90 HB | 28 % IACS |
Strain hardened and partially annealed, half hard | Half-hard stabilised Al-5Mg sheet; common bending/forming temper for high-Mg architectural and marine panels. | 245 | 330 | 11 | 88 HB | 29 % IACS |
Strain hardened, half hard | Half-hard cold-worked Al-5Mg sheet offering a balance of high strength and workable ductility. | 260 | 335 | 9 | 90 HB | 29 % IACS |
Strain hardened and partially annealed, three-quarter hard | Three-quarter-hard stabilised Al-5Mg sheet: near-H16 strength with slightly improved ductility and forming behaviour. | 280 | 355 | 8 | 95 HB | 29 % IACS |
Strain hardened and stabilized, half hard | Choose when higher strength and stiffness-per-thickness matter more than bending, e.g. panels and tank walls. | 285 | 370 | 8 | 100 HB | 28 % IACS |
Strain hardened, three-quarter hard | Three-quarter-hard Al-5Mg sheet with high strength and limited cold-forming capability. | 295 | 360 | 6 | 98 HB | 29 % IACS |
Strain hardened and stabilized, three-quarter hard | Cold worked and low-temperature stabilised to three-quarter hard; high strength with reduced age-softening and improved SCC stability for high-Mg sheet. | 300 | 365 | 6 | 100 HB | 29 % IACS |
Strain hardened and stabilized, full hard | Thin sheet/strip where maximum as-rolled strength is required and only flat or gentle forming is done. | 340 | 405 | 5 | 110 HB | 28 % IACS |
What is 5019-H112?
5019-H112 is 5019 in the H112 temper — hot-rolled thick plate or extrusions where properties come from hot work; the usual choice for heavy welded marine sections. 5019-H112 has a yield strength of 160 MPa (23.2 ksi) and a tensile strength of 300 MPa (43.5 ksi) — weaker than 61% of aluminum grades. Elongation at break is 17% and the elastic modulus is 70 GPa (10.2 Msi). 5019-H112 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
- Good corrosion resistance — 79/100, better than 96% of aluminum grades
- Tough — resists crack growth — 36 MPa·√m (32.8 ksi·√in), better than 93% of aluminum grades
- Ductile — tolerates forming and impact — 17%, better than 85% of aluminum grades
- Forms and bends easily — 65/100, better than 80% of aluminum grades
- Readily welded — 85/100, better than 79% of aluminum grades
Limitations
- Limited service temperature — 65°C (149 °F), worse than 97% of aluminum grades
- Poor heat conductor — 114 W/m·K (65.9 BTU/hr·ft·°F), worse than 85% of aluminum grades
- Low electrical conductivity — 29 % IACS, worse than 78% of aluminum grades
- Difficult to machine — 42/100, worse than 77% of aluminum grades
5019-H112 properties
Typical room-temperature values for 5019-H112; 22 are specific to this condition. Other listed values are 5019 reference data and may not represent this condition. Bars are the position among aluminum grades.
Physical3
5019-H112 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-H112 has a yield strength of 160 MPa (23.2 ksi) and a tensile strength of 300 MPa (43.5 ksi) — weaker than 61% of aluminum grades. Elongation at break is 17% and the elastic modulus is 70 GPa (10.2 Msi).
Thermal6
5019-H112 is rated for continuous service to 65°C (149 °F). It conducts heat at 114 W/m·K (65.9 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-H112 conducts electricity at 29 % IACS, worse than 78% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is very good (79/100), better than 96% of aluminum grades.
Sustainability4
Producing a kilogram of 5019-H112 takes about 200 MJ of energy and emits 12.5 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 35%.
Manufacturability8
5019-H112's machinability is fair (42/100, worse than 77% of aluminum grades); weldability excellent (85/100); formability good (65/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 5019-H112
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-H112 — frequently asked
What is 5019-H112 used for?
5019-H112 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-H112?
5019-H112 has a typical yield strength of 160 MPa (23.2 ksi) and a tensile strength of 300 MPa (43.5 ksi) — weaker than 61% of aluminum grades. Strength varies by condition: see the 16 listed tempers.
Is 5019-H112 easy to machine?
Not especially — machinability is rated fair (42/100, worse than 77% 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-H112 be welded?
Yes — weldability is rated excellent (85/100). 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-H112?
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-H112 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-H112?
5019-H112 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-H112?
Yes — 5019-H112 is available for CNC machining and sheet metal; every part is priced by an engineer rather than instantly. 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 5000 series) 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.