Aluminum 3103-H112 vs 3103-H12
Aluminum · 3103 temper comparison
3103-H112 and 3103-H12 are two conditions of the same aluminum grade, 3103: H112 (strain hardened from hot working only) versus H12 (strain hardened, quarter hard). The chemistry is identical, so every difference below comes from the condition. 3103-H12 is the stronger of the two: yield strength 105 MPa (15.2 ksi) against 50 MPa (7.25 ksi) for 3103-H112, about 110% more; tensile strength follows at 130 MPa (18.9 ksi) vs 110 MPa (16 ksi). In exchange, 3103-H112 is the more ductile: elongation 20% versus 9% for 3103-H12, and 3103-H12 is harder (37 HB vs 30 HB). 3103-H112 runs hotter in service (150°C vs 120°C continuous) and 3103-H112 conducts heat better (185 W/m·K vs 163 W/m·K).
3103-H112Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
3103-H12Choose it when strength drives the design.
3103-H112 vs 3103-H12: 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 69 GPa10 Msi · Shear Modulus 26 GPa3.8 Msi · Bulk Modulus 69 GPa10 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Same in both: Density 2.73 g/cm³0.1 lb/in³ · Melting Point (Solidus) 645°C1,193 °F · Liquidus Temperature 655°C1,211 °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 893 J/kg·K0.21 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 23.2 µm/m·K12.9 µin/in·°F · Latent Heat of Fusion 390 J/g168 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).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.83 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 75 / 100 · Polishability 50 / 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 1,200 L/kg144 gal/lb · Typical Recycled Content 35%
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.
3103-H112 vs 3103-H12 — frequently asked
Is 3103-H12 stronger than 3103-H112?
Yes. 3103-H12 has a typical yield strength of 105 MPa (15.2 ksi) against 50 MPa (7.25 ksi) for 3103-H112 — about 110% more. Tensile strength is 130 MPa (18.9 ksi) vs 110 MPa (16 ksi).
Which condition does FabDigit quote by default, H112 or H12?
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, 3103-H112 or 3103-H12?
3103-H12, by a small margin. Both rate poor for machinability — 32/100 against 25/100 for 3103-H112.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 3103-H112 and 3103-H12 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.