Aluminum 1188-H111 vs 1188-H22
Aluminum · 1188 temper comparison
1188-H111 and 1188-H22 are two conditions of the same aluminum grade, 1188: H111 (slightly strain hardened) versus H22 (strain hardened and partially annealed, quarter hard). The chemistry is identical, so every difference below comes from the condition. 1188-H22 is the stronger of the two: yield strength 52 MPa (7.54 ksi) against 28 MPa (4.06 ksi) for 1188-H111, about 86% more; tensile strength follows at 78 MPa (11.3 ksi) vs 68 MPa (9.86 ksi). In exchange, 1188-H111 is the more ductile: elongation 38% versus 24% for 1188-H22, and 1188-H22 is harder (22 HB vs 19 HB). 1188-H111 runs hotter in service (150°C vs 130°C continuous).
1188-H111Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
1188-H22Choose it when strength drives the design.
1188-H111 vs 1188-H22: 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 75 GPa10.9 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Same in both: Density 2.7 g/cm³0.1 lb/in³ · Melting Point (Solidus) 657°C1,215 °F · Liquidus Temperature 660°C1,220 °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) 23.6 µm/m·K13.1 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
Same in both: Electrical Resistivity 2.77×10⁻⁸ Ω·m1.09 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.85 V · Corrosion Resistance 78 / 100
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: Castability 40 / 100 · Brazeability / Solderability 80 / 100 · Polishability 90 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 215 MJ/kg92,433 BTU/lb · Embodied Carbon (primary production) 13.5 kg CO₂/kg · Embodied Water 1,100 L/kg132 gal/lb · Typical Recycled Content 0%
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.
1188-H111 vs 1188-H22 — frequently asked
Is 1188-H22 stronger than 1188-H111?
Yes. 1188-H22 has a typical yield strength of 52 MPa (7.54 ksi) against 28 MPa (4.06 ksi) for 1188-H111 — about 86% more. Tensile strength is 78 MPa (11.3 ksi) vs 68 MPa (9.86 ksi).
Which condition does FabDigit quote by default, H111 or H22?
O is the default 1188 condition in the FabDigit quote flow (neither H111 nor H22). 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.
When should I choose 1188-H111 over 1188-H22?
Pick 1188-H111 when the part is bent, formed or impact-loaded, or when the part sees heat. Pick 1188-H22 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1188-H111 and 1188-H22 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.