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Copper Alloy C96300 vs C96600

Copper Alloy · grade comparison

Copper Alloy C96300 and C96600 are both copper alloy grades. C96600 is the stronger of the two: yield strength 585 MPa (84.8 ksi) against 275 MPa (39.9 ksi) for C96300, about 113% more; tensile strength follows at 760 MPa (110 ksi) vs 470 MPa (68.2 ksi). In exchange, C96300 is the more ductile: elongation 18% versus 5% for C96600, and C96600 is harder (285 HB vs 140 HB). C96600 runs hotter in service (330°C vs 300°C continuous) and C96600 conducts heat better (42 W/m·K vs 33 W/m·K). On the shop floor, C96300 welds better (very good vs fair).

C96300Choose it when the part is bent, formed or impact-loaded, or when it will be welded.

C96600Choose it when strength drives the design, or when the part sees heat.

C96300 vs C96600: properties

C96300C96600

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

145 GPa21 Msi
150 GPa21.8 Msi

Shear Modulus

55 GPa8 Msi
57 GPa8.3 Msi

Bulk Modulus

140 GPa20.3 Msi
132 GPa19.1 Msi

Poisson's Ratio

0.33
0.32

Tensile Strength (Ultimate)

470 MPa68.2 ksi
760 MPa110 ksi

Yield Strength (0.2% offset)

275 MPa39.9 ksi
585 MPa84.8 ksi

Elongation at Break

18%
5%

Reduction in Area

20%
—

Compressive Strength

285 MPa41.3 ksi
—

Shear Strength

300 MPa43.5 ksi
480 MPa69.6 ksi

Fatigue Strength (Endurance Limit)

150 MPa21.8 ksi
240 MPa34.8 ksi

Charpy V-Notch Impact (RT)

40 J29.5 ft·lbf
11 J8.1 ft·lbf

Hardness, Brinell

140 HB
285 HB

Hardness, Rockwell B

76 HRB
—

Hardness, Vickers

147 HV
300 HV

Hardness, Rockwell C

—
30 HRC

Physical

Density and transition temperatures.

Density

8.9 g/cm³0.32 lb/in³
8.8 g/cm³0.32 lb/in³

Melting Point (Solidus)

1,165°C2,129 °F
1,170°C2,138 °F

Liquidus Temperature

1,205°C2,201 °F
1,235°C2,255 °F

Thermal

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

Thermal Conductivity

33 W/m·K19.1 BTU/hr·ft·°F
42 W/m·K24.3 BTU/hr·ft·°F

Thermal Expansion (CTE, 20–100 °C)

15.5 µm/m·K8.6 µin/in·°F
16 µm/m·K8.9 µin/in·°F

Max Service Temperature (continuous)

300°C572 °F
330°C626 °F

Same in both: Specific Heat Capacity 380 J/kg·K0.09 BTU/lb·°F · Latent Heat of Fusion 210 J/g90.3 BTU/lb · Min Service Temperature -196°C-321 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

6.5 % IACS
6 % IACS

Electrical Resistivity

2.65×10⁻⁷ Ω·m10.4 µΩ·in
2.9×10⁻⁷ Ω·m11.4 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.25 V
-0.26 V

Same in both: Corrosion Resistance 78 / 100

Manufacturability

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

Weldability

75 / 100
35 / 100

Formability (cold)

18 / 100
10 / 100

Brazeability / Solderability

70 / 100
50 / 100

Polishability

70 / 100
80 / 100

Same in both: Machinability 28 / 100 · Machinability Rating (AISI 1212 = 100 %) 20% · Castability 60 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

78 MJ/kg33,534 BTU/lb
95 MJ/kg40,843 BTU/lb

Embodied Carbon (primary production)

6.5 kg CO₂/kg
7.5 kg CO₂/kg

Embodied Water

350 L/kg41.9 gal/lb
300 L/kg35.9 gal/lb

Typical Recycled Content

40%
30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

53 kN·m/kg
86 kN·m/kg

Specific Stiffness (E / density)

16.3 MN·m/kg
17 MN·m/kg

Modulus of Resilience

261 kJ/m³
1,141 kJ/m³

Thermal Diffusivity

9.8 mm²/s
12.6 mm²/s

Thermal Shock Resistance Index

7
13

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 scaleC96300C96600

Manufacturing and finishing

CapabilityC96300C96600
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

Both take the same 4 finishes: Copper Plating, Electroless Nickel (EN), Gold Plating, Silver Plating.

C96300 vs C96600 — frequently asked

Is C96600 stronger than C96300?

Yes. C96600 has a typical yield strength of 585 MPa (84.8 ksi) against 275 MPa (39.9 ksi) for C96300 — about 113% more. Tensile strength is 760 MPa (110 ksi) vs 470 MPa (68.2 ksi).

Which is cheaper, C96300 or C96600?

Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.

Which welds better, C96300 or C96600?

C96300. Its weldability rates very good (75/100) against fair (35/100) for C96600.

Ready to make it?

Upload a CAD file and FabDigit prices the part in C96300 and C96600 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.