Aluminum 5254-H32 vs 5254-O
Aluminum · 5254 temper comparison
5254-H32 and 5254-O are two conditions of the same aluminum grade, 5254: H32 (strain hardened and stabilized, quarter hard) versus O (annealed). The chemistry is identical, so every difference below comes from the condition. 5254-H32 is the stronger of the two: yield strength 205 MPa (29.7 ksi) against 115 MPa (16.7 ksi) for 5254-O, about 78% more; tensile strength follows at 270 MPa (39.2 ksi) vs 240 MPa (34.8 ksi). In exchange, 5254-O is the more ductile: elongation 27% versus 15% for 5254-H32, and 5254-H32 is harder (67 HB vs 58 HB). 5254-O runs hotter in service (100°C vs 65°C continuous). On the shop floor, 5254-H32 machines more easily (45 vs 35 out of 100).
5254-H32Choose it when strength drives the design, or when the part is machined in volume.
5254-OChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
5254-H32 vs 5254-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
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 70.3 GPa10.2 Msi · Shear Modulus 26.4 GPa3.8 Msi · Bulk Modulus 70 GPa10.2 Msi · Poisson's Ratio 0.33 · Shear Strength 150 MPa21.8 ksi
Physical
Density and transition temperatures.
Same in both: Density 2.66 g/cm³0.1 lb/in³ · Melting Point (Solidus) 593°C1,099 °F · Liquidus Temperature 643°C1,189 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 900 J/kg·K0.21 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 23.9 µm/m·K13.3 µin/in·°F · Latent Heat of Fusion 397 J/g171 BTU/lb · Min Service Temperature -270°C-454 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.86 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 30% · Weldability 88 / 100 · Castability 25 / 100 · Brazeability / Solderability 20 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 200 MJ/kg85,985 BTU/lb · Embodied Carbon (primary production) 12 kg CO₂/kg · Embodied Water 1,100 L/kg132 gal/lb · Typical Recycled Content 20%
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.
5254-H32 vs 5254-O — frequently asked
Is 5254-H32 stronger than 5254-O?
Yes. 5254-H32 has a typical yield strength of 205 MPa (29.7 ksi) against 115 MPa (16.7 ksi) for 5254-O — about 78% more. Tensile strength is 270 MPa (39.2 ksi) vs 240 MPa (34.8 ksi).
Which condition does FabDigit quote by default, H32 or O?
H32 is the default 5254 condition in the FabDigit quote flow. 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, 5254-H32 or 5254-O?
5254-H32, by a small margin. Both rate fair for machinability — 45/100 against 35/100 for 5254-O.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 5254-H32 and 5254-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.