Aluminum 3105-H111 vs 3105-H34
Aluminum · 3105 temper comparison
3105-H111 and 3105-H34 are two conditions of the same aluminum grade, 3105: H111 (slightly strain hardened) versus H34 (strain hardened and stabilized, half hard). The chemistry is identical, so every difference below comes from the condition. 3105-H34 is the stronger of the two: yield strength 145 MPa (21 ksi) against 55 MPa (7.98 ksi) for 3105-H111, about 164% more; tensile strength follows at 170 MPa (24.7 ksi) vs 125 MPa (18.1 ksi). In exchange, 3105-H111 is the more ductile: elongation 22% versus 6% for 3105-H34, and 3105-H34 is harder (47 HB vs 33 HB). 3105-H111 runs hotter in service (175°C vs 150°C continuous).
3105-H111Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
3105-H34Choose it when strength drives the design.
3105-H111 vs 3105-H34: 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 69 GPa10 Msi · Shear Modulus 26 GPa3.8 Msi · Bulk Modulus 69 GPa10 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Melting Point (Solidus)
Liquidus Temperature
Same in both: Density 2.72 g/cm³0.1 lb/in³
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 173 W/m·K100 BTU/hr·ft·°F · Specific Heat Capacity 897 J/kg·K0.21 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 23.6 µm/m·K13.1 µin/in·°F · Latent Heat of Fusion 393 J/g169 BTU/lb · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.83 V · Corrosion Resistance 68 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Polishability
Same in both: Weldability 85 / 100 · Brazeability / Solderability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Water
Typical Recycled Content
Same in both: Embodied Energy (primary production) 200 MJ/kg85,985 BTU/lb · Embodied Carbon (primary production) 12 kg CO₂/kg
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.
3105-H111 vs 3105-H34 — frequently asked
Is 3105-H34 stronger than 3105-H111?
Yes. 3105-H34 has a typical yield strength of 145 MPa (21 ksi) against 55 MPa (7.98 ksi) for 3105-H111 — about 164% more. Tensile strength is 170 MPa (24.7 ksi) vs 125 MPa (18.1 ksi).
Which condition does FabDigit quote by default, H111 or H34?
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, 3105-H111 or 3105-H34?
3105-H34, by a small margin. Both rate fair for machinability — 44/100 against 35/100 for 3105-H111.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 3105-H111 and 3105-H34 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.