Aluminum 5059-H112 vs 5059-O
Aluminum · 5059 temper comparison
5059-H112 and 5059-O are two conditions of the same aluminum grade, 5059: H112 (strain hardened from hot working only) versus O (annealed). The chemistry is identical, so every difference below comes from the condition. 5059-H112 is the stronger of the two: yield strength 185 MPa (26.8 ksi) against 165 MPa (23.9 ksi) for 5059-O, about 12% more. In exchange, 5059-O is the more ductile: elongation 24% versus 20% for 5059-H112, and 5059-H112 is harder (95 HB vs 78 HB). On the shop floor, 5059-H112 machines more easily (50 vs 35 out of 100).
5059-H112Choose it when strength drives the design, or when the part is machined in volume.
5059-OChoose it when the part is bent, formed or impact-loaded.
5059-H112 vs 5059-O: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all aluminum grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all aluminum grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Same in both: Elastic (Young's) Modulus 70 GPa10.2 Msi · Shear Modulus 26.4 GPa3.8 Msi · Bulk Modulus 69 GPa10 Msi · Poisson's Ratio 0.33 · Compressive Strength 300 MPa43.5 ksi · Fracture Toughness (K_IC) 32 MPa·√m29.1 ksi·√in
Physical
Density and transition temperatures.
Liquidus Temperature
Same in both: Density 2.64 g/cm³0.1 lb/in³ · Melting Point (Solidus) 570°C1,058 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Same in both: Specific Heat Capacity 900 J/kg·K0.21 BTU/lb·°F · Max Service Temperature (continuous) 65°C149 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Same in both: Electrical Conductivity 29 % IACS
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.87 V · Corrosion Resistance 80 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Castability 25 / 100 · Brazeability / Solderability 15 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Typical Recycled Content
Same in both: Embodied Energy (primary production) 200 MJ/kg85,985 BTU/lb · Embodied Carbon (primary production) 12.5 kg CO₂/kg · Embodied Water 1,200 L/kg144 gal/lb
Strength versus weight
Yield strength against density for every aluminum grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
5059-H112 vs 5059-O — frequently asked
Is 5059-H112 stronger than 5059-O?
Yes. 5059-H112 has a typical yield strength of 185 MPa (26.8 ksi) against 165 MPa (23.9 ksi) for 5059-O — about 12% more. Tensile strength is 355 MPa (51.5 ksi) vs 345 MPa (50 ksi).
Which condition does FabDigit quote by default, H112 or O?
H111 is the default 5059 condition in the FabDigit quote flow (neither H112 nor O). The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
Which is easier to machine, 5059-H112 or 5059-O?
5059-H112, by a small margin. Both rate fair for machinability — 50/100 against 35/100 for 5059-O.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 5059-H112 and 5059-O side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.