Aluminum 5182-H38 vs 5182-O
Aluminum · 5182 temper comparison
5182-H38 and 5182-O are two conditions of the same aluminum grade, 5182: H38 (strain hardened and stabilized, full hard) versus O (annealed). The chemistry is identical, so every difference below comes from the condition. 5182-H38 is the stronger of the two: yield strength 330 MPa (47.9 ksi) against 130 MPa (18.9 ksi) for 5182-O, about 154% more; tensile strength follows at 385 MPa (55.8 ksi) vs 275 MPa (39.9 ksi). In exchange, 5182-O is the more ductile: elongation 21% versus 6% for 5182-H38, and 5182-H38 is harder (100 HB vs 70 HB). 5182-H38 runs hotter in service (80°C vs 65°C continuous). On the shop floor, 5182-H38 machines more easily (48 vs 35 out of 100).
5182-H38Choose it when strength drives the design, or when the part sees heat.
5182-OChoose it when the part is bent, formed or impact-loaded.
5182-H38 vs 5182-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 GPa3.8 Msi · Bulk Modulus 70 GPa10.2 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Same in both: Density 2.65 g/cm³0.1 lb/in³ · Melting Point (Solidus) 577°C1,071 °F · Liquidus Temperature 638°C1,180 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 123 W/m·K71.1 BTU/hr·ft·°F · Specific Heat Capacity 900 J/kg·K0.21 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 24.1 µm/m·K13.4 µin/in·°F · Latent Heat of Fusion 390 J/g168 BTU/lb · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 31 % IACS · Electrical Resistivity 5.6×10⁻⁸ Ω·m2.2 µΩ·in
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 %)
Weldability
Formability (cold)
Same in both: Brazeability / Solderability 15 / 100 · Polishability 60 / 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 55%
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.
5182-H38 vs 5182-O — frequently asked
Is 5182-H38 stronger than 5182-O?
Yes. 5182-H38 has a typical yield strength of 330 MPa (47.9 ksi) against 130 MPa (18.9 ksi) for 5182-O — about 154% more. Tensile strength is 385 MPa (55.8 ksi) vs 275 MPa (39.9 ksi).
Which condition does FabDigit quote by default, H38 or O?
Specify the condition in the material field or the drawing note; FabDigit prices the quote for the state you call out.
Which is easier to machine, 5182-H38 or 5182-O?
5182-H38, by a small margin. Both rate fair for machinability — 48/100 against 35/100 for 5182-O; for welding the order is 5182-O first (excellent, 85/100) then 5182-H38 (very good, 80/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 5182-H38 and 5182-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.