Copper Alloy C79800-H06 vs C79800-H08
Copper Alloy · C79800 temper comparison
C79800-H06 and C79800-H08 are two conditions of the same copper alloy grade, C79800: H06 (extra hard) versus H08 (spring hard). The chemistry is identical, so every difference below comes from the condition. C79800-H08 is the stronger of the two: yield strength 570 MPa (82.7 ksi) against 525 MPa (76.1 ksi) for C79800-H06, about 9% more; tensile strength follows at 660 MPa (95.7 ksi) vs 620 MPa (89.9 ksi). In exchange, C79800-H06 is the more ductile: elongation 5% versus 3% for C79800-H08, and C79800-H08 is harder (203 HB vs 188 HB).
C79800-H06Choose it when the part is bent, formed or impact-loaded.
C79800-H08Choose it when strength drives the design.
C79800-H06 vs C79800-H08: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all copper alloy 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 copper alloy 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, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 117 GPa17 Msi · Shear Modulus 44 GPa6.4 Msi · Bulk Modulus 115 GPa16.7 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Same in both: Density 8.69 g/cm³0.31 lb/in³ · Melting Point (Solidus) 890°C1,634 °F · Liquidus Temperature 925°C1,697 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 33 W/m·K19.1 BTU/hr·ft·°F · Specific Heat Capacity 380 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 16.5 µm/m·K9.2 µin/in·°F · Latent Heat of Fusion 175 J/g75.2 BTU/lb · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 7 % IACS · Electrical Resistivity 2.46×10⁻⁷ Ω·m9.69 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.25 V · Corrosion Resistance 55 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Formability (cold)
Same in both: Machinability 70 / 100 · Machinability Rating (AISI 1212 = 100 %) 62% · Weldability 15 / 100 · Brazeability / Solderability 65 / 100 · Polishability 85 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 72 MJ/kg30,954 BTU/lb · Embodied Carbon (primary production) 4.8 kg CO₂/kg · Embodied Water 260 L/kg31.2 gal/lb · Typical Recycled Content 40%
Strength versus weight
Yield strength against density for every copper alloy grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
C79800-H06 vs C79800-H08 — frequently asked
Is C79800-H08 stronger than C79800-H06?
Yes. C79800-H08 has a typical yield strength of 570 MPa (82.7 ksi) against 525 MPa (76.1 ksi) for C79800-H06 — about 9% more. Tensile strength is 660 MPa (95.7 ksi) vs 620 MPa (89.9 ksi).
Which condition does FabDigit quote by default, H06 or H08?
H02 is the default C79800 condition in the FabDigit quote flow (neither H06 nor H08). 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 C79800-H06 over C79800-H08?
Pick C79800-H06 when the part is bent, formed or impact-loaded. Pick C79800-H08 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C79800-H06 and C79800-H08 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.