Copper Alloy C90300 vs C93600
Copper Alloy · grade comparison
Copper Alloy C90300 and C93600 are both copper alloy grades. C90300 is the stronger of the two: yield strength 145 MPa (21 ksi) against 110 MPa (16 ksi) for C93600, about 32% more; tensile strength follows at 310 MPa (45 ksi) vs 207 MPa (30 ksi). C90300 is the more ductile: elongation 30% versus 15% for C93600, and C90300 is harder (70 HB vs 60 HB). C90300 is stiffer (103 GPa vs 76 GPa) and C90300 runs hotter in service (260°C vs 230°C continuous). On the shop floor, C93600 machines more easily (excellent vs good), C90300 welds better (fair vs not recommended), and C90300 sits in a lower cost tier (high, $$$$) than C93600 (specialty, $$$$$).
C90300Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
C93600Choose it when the part is machined in volume.
C90300 vs C93600: 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.
Elastic (Young's) Modulus
Shear Modulus
Bulk Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Reduction in Area
Hardness, Vickers
Same in both: Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Liquidus Temperature
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Max Service Temperature (continuous)
Min Service Temperature
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Brazeability / Solderability
Polishability
Machinability Rating (AISI 1212 = 100 %)
Same in both: Castability 85 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Same in both: Typical Recycled Content 75%
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
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.
Manufacturing and finishing
| Capability | C90300 | C93600 |
|---|---|---|
| CNC machining | — | Yes |
| Default condition | — | As Cast |
| Relative cost | $$$$ High | $$$$$ Specialty |
| Min. machined wall | — | 0.8 mm |
| Best machined surface | — | Ra 1.6 µm |
| Chrome Plating | — | Yes |
| Electropolishing | — | Yes |
| Nickel Plating | — | Yes |
| Painting | — | Yes |
| Tin Plating | — | Yes |
They share 4 finishes: Copper Plating, Electroless Nickel (EN), Gold Plating, Silver Plating.
C90300 vs C93600 — frequently asked
Is C90300 stronger than C93600?
Yes. C90300 has a typical yield strength of 145 MPa (21 ksi) against 110 MPa (16 ksi) for C93600 — about 32% more. Tensile strength is 310 MPa (45 ksi) vs 207 MPa (30 ksi).
Which is cheaper, C90300 or C93600?
C90300 is the lower-cost material: it sits in the high tier ($$$$) while C93600 is specialty ($$$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
Which is easier to machine, C90300 or C93600?
C93600. Its machinability rates excellent (85/100) against good (55/100) for C90300; for welding the order is C90300 first (fair, 35/100) then C93600 (not recommended, 10/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in C90300 and C93600 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.