Aluminum ER5254-H19 vs ER5254-O
Aluminum · ER5254 temper comparison
ER5254-H19 and ER5254-O are two conditions of the same aluminum grade, ER5254: H19 (strain hardened, extra hard) versus O (annealed). The chemistry is identical, so every difference below comes from the condition. ER5254-H19 is the stronger of the two: yield strength 270 MPa (39.2 ksi) against 115 MPa (16.7 ksi) for ER5254-O, about 135% more; tensile strength follows at 315 MPa (45.7 ksi) vs 240 MPa (34.8 ksi). In exchange, ER5254-O is the more ductile: elongation 27% versus 4% for ER5254-H19, and ER5254-H19 is harder (80 HB vs 58 HB). On the shop floor, ER5254-H19 machines more easily (good vs fair).
ER5254-H19Choose it when strength drives the design, or when the part is machined in volume.
ER5254-OChoose it when the part is bent, formed or impact-loaded.
ER5254-H19 vs ER5254-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)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Same in both: Elastic (Young's) Modulus 70.3 GPa10.2 Msi · Shear Modulus 26.4 GPa3.8 Msi · Bulk Modulus 69 GPa10 Msi · Poisson's Ratio 0.33
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
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 395 J/g170 BTU/lb · Max Service Temperature (continuous) 65°C149 °F · Min Service Temperature -196°C-321 °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
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Weldability 88 / 100 · Brazeability / Solderability 15 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 200 MJ/kg85,985 BTU/lb · Embodied Carbon (primary production) 12.5 kg CO₂/kg · Embodied Water 1,200 L/kg144 gal/lb · Typical Recycled Content 15%
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.
ER5254-H19 vs ER5254-O — frequently asked
Is ER5254-H19 stronger than ER5254-O?
Yes. ER5254-H19 has a typical yield strength of 270 MPa (39.2 ksi) against 115 MPa (16.7 ksi) for ER5254-O — about 135% more. Tensile strength is 315 MPa (45.7 ksi) vs 240 MPa (34.8 ksi).
Which condition does FabDigit quote by default, H19 or O?
AW is the default ER5254 condition in the FabDigit quote flow (neither H19 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, ER5254-H19 or ER5254-O?
ER5254-H19. Its machinability rates good (55/100) against fair (42/100) for ER5254-O.
Ready to make it?
Upload a CAD file and FabDigit prices the part in ER5254-H19 and ER5254-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.