Aluminum 8177-H22 vs 8177-H24
Aluminum · 8177 temper comparison
8177-H22 and 8177-H24 are two conditions of the same aluminum grade, 8177: H22 (strain hardened and partially annealed, quarter hard) versus H24 (strain hardened and partially annealed, half hard). The chemistry is identical, so every difference below comes from the condition. 8177-H24 is the stronger of the two: yield strength 100 MPa (14.5 ksi) against 85 MPa (12.3 ksi) for 8177-H22, about 18% more; tensile strength follows at 128 MPa (18.6 ksi) vs 110 MPa (16 ksi). In exchange, 8177-H22 is the more ductile: elongation 15% versus 13% for 8177-H24, and 8177-H24 is harder (31 HB vs 27 HB).
8177-H22Choose it when the part is bent, formed or impact-loaded.
8177-H24Choose it when strength drives the design.
8177-H22 vs 8177-H24: 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 2.71 g/cm³0.1 lb/in³ · Melting Point (Solidus) 645°C1,193 °F · Liquidus Temperature 657°C1,215 °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) 23.6 µm/m·K13.1 µin/in·°F · Latent Heat of Fusion 397 J/g171 BTU/lb · Max Service Temperature (continuous) 90°C194 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Same in both: Electrical Resistivity 2.8×10⁻⁸ Ω·m1.1 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.83 V · Corrosion Resistance 55 / 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 55 / 100 · Polishability 45 / 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 kg CO₂/kg · Embodied Water 1,150 L/kg138 gal/lb · Typical Recycled Content 25%
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.
8177-H22 vs 8177-H24 — frequently asked
Is 8177-H24 stronger than 8177-H22?
Yes. 8177-H24 has a typical yield strength of 100 MPa (14.5 ksi) against 85 MPa (12.3 ksi) for 8177-H22 — about 18% more. Tensile strength is 128 MPa (18.6 ksi) vs 110 MPa (16 ksi).
Which condition does FabDigit quote by default, H22 or H24?
O is the default 8177 condition in the FabDigit quote flow (neither H22 nor H24). 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 8177-H22 over 8177-H24?
Pick 8177-H22 when the part is bent, formed or impact-loaded. Pick 8177-H24 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 8177-H22 and 8177-H24 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.