Aluminum 5B05-H112 vs 5B05-H18
Aluminum · 5B05 temper comparison
5B05-H112 and 5B05-H18 are two conditions of the same aluminum grade, 5B05: H112 (strain hardened from hot working only) versus H18 (strain hardened, full hard). The chemistry is identical, so every difference below comes from the condition. 5B05-H18 is the stronger of the two: yield strength 320 MPa (46.4 ksi) against 155 MPa (22.5 ksi) for 5B05-H112, about 106% more; tensile strength follows at 385 MPa (55.8 ksi) vs 285 MPa (41.3 ksi). In exchange, 5B05-H112 is the more ductile: elongation 16% versus 5% for 5B05-H18, and 5B05-H18 is harder (105 HB vs 70 HB). 5B05-H112 runs hotter in service (80°C vs 65°C continuous). On the shop floor, 5B05-H18 machines more easily (52 vs 42 out of 100).
5B05-H112Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
5B05-H18Choose it when strength drives the design, or when the part is machined in volume.
5B05-H112 vs 5B05-H18: 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
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 70 GPa10.2 Msi · Shear Modulus 26.4 GPa3.8 Msi · Bulk Modulus 71 GPa10.3 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Same in both: Density 2.64 g/cm³0.1 lb/in³ · Melting Point (Solidus) 568°C1,054 °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 117 W/m·K67.6 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 -269°C-452 °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) -0.87 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 30%
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.
5B05-H112 vs 5B05-H18 — frequently asked
Is 5B05-H18 stronger than 5B05-H112?
Yes. 5B05-H18 has a typical yield strength of 320 MPa (46.4 ksi) against 155 MPa (22.5 ksi) for 5B05-H112 — about 106% more. Tensile strength is 385 MPa (55.8 ksi) vs 285 MPa (41.3 ksi).
Which condition does FabDigit quote by default, H112 or H18?
O is the default 5B05 condition in the FabDigit quote flow (neither H112 nor H18). 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, 5B05-H112 or 5B05-H18?
5B05-H18, by a small margin. Both rate fair for machinability — 52/100 against 42/100 for 5B05-H112; for welding the order is 5B05-H112 first (excellent, 88/100) then 5B05-H18 (very good, 80/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 5B05-H112 and 5B05-H18 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.