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Copper Alloy C91000-M06 vs C91000-M10

Copper Alloy · C91000 temper comparison

C91000-M06 and C91000-M10 are two conditions of the same copper alloy grade, C91000: M06 (as investment cast) versus M10 (as hot forged and air cooled). The chemistry is identical, so every difference below comes from the condition. C91000-M06 is the stronger of the two: yield strength 175 MPa (25.4 ksi) against 160 MPa (23.2 ksi) for C91000-M10, about 9% more; tensile strength follows at 265 MPa (38.4 ksi) vs 240 MPa (34.8 ksi). C91000-M06 is the more ductile: elongation 3% versus 1.5% for C91000-M10, and C91000-M10 is harder (145 HB vs 130 HB).

C91000-M06Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.

C91000-M06 vs C91000-M10: properties

C91000-M06C91000-M10

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

103 GPa14.9 Msi
105 GPa15.2 Msi

Tensile Strength (Ultimate)

265 MPa38.4 ksi
240 MPa34.8 ksi

Yield Strength (0.2% offset)

175 MPa25.4 ksi
160 MPa23.2 ksi

Elongation at Break

3%
1.5%

Reduction in Area

3%
2%

Compressive Strength

570 MPa82.7 ksi
600 MPa87 ksi

Shear Strength

190 MPa27.6 ksi
180 MPa26.1 ksi

Fatigue Strength (Endurance Limit)

105 MPa15.2 ksi
95 MPa13.8 ksi

Charpy V-Notch Impact (RT)

5 J3.7 ft·lbf
3 J2.2 ft·lbf

Hardness, Brinell

130 HB
145 HB

Hardness, Rockwell B

72 HRB
79 HRB

Hardness, Vickers

135 HV
152 HV

Same in both: Shear Modulus 39 GPa5.7 Msi · Bulk Modulus 115 GPa16.7 Msi · Poisson's Ratio 0.33

Physical

Density and transition temperatures.

Same in both: Density 8.8 g/cm³0.32 lb/in³ · Melting Point (Solidus) 830°C1,526 °F · Liquidus Temperature 1,000°C1,832 °F

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

48 W/m·K27.7 BTU/hr·ft·°F
47 W/m·K27.2 BTU/hr·ft·°F

Same in both: Specific Heat Capacity 376 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 18 µm/m·K10 µin/in·°F · Latent Heat of Fusion 175 J/g75.2 BTU/lb · Max Service Temperature (continuous) 250°C482 °F · Min Service Temperature -200°C-328 °F

Electrical

Conductivity and insulation.

Same in both: Electrical Conductivity 9 % IACS · Electrical Resistivity 1.9×10⁻⁷ Ω·m7.48 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

67 / 100
66 / 100

Same in both: Galvanic Potential (seawater, vs SCE) -0.26 V

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Machinability

35 / 100
28 / 100

Machinability Rating (AISI 1212 = 100 %)

35%
28%

Formability (cold)

8 / 100
5 / 100

Same in both: Weldability 15 / 100 · Castability 70 / 100 · Brazeability / Solderability 60 / 100 · Polishability 70 / 100

Sustainability

Primary-production footprint per kilogram.

Same in both: Embodied Energy (primary production) 62 MJ/kg26,655 BTU/lb · Embodied Carbon (primary production) 4.6 kg CO₂/kg · Embodied Water 300 L/kg35.9 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.

501002005001,0007.588.599.5Density (g/cm³)Yield strength (MPa) — log scaleC91000

C91000-M06 vs C91000-M10 — frequently asked

Is C91000-M06 stronger than C91000-M10?

Yes. C91000-M06 has a typical yield strength of 175 MPa (25.4 ksi) against 160 MPa (23.2 ksi) for C91000-M10 — about 9% more. Tensile strength is 265 MPa (38.4 ksi) vs 240 MPa (34.8 ksi).

Which condition does FabDigit quote by default, M06 or M10?

M01 is the default C91000 condition in the FabDigit quote flow (neither M06 nor M10). 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, C91000-M06 or C91000-M10?

C91000-M06. Its machinability rates fair (35/100) against poor (28/100) for C91000-M10.

Ready to make it?

Upload a CAD file and FabDigit prices the part in C91000-M06 and C91000-M10 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.