Copper Alloy C84400 vs C93200
Copper Alloy · grade comparison
Copper Alloy C84400 and C93200 are both copper alloy grades. C93200 is the stronger of the two: yield strength 125 MPa (18.1 ksi) against 110 MPa (16 ksi) for C84400, about 14% more. In exchange, C84400 is the more ductile: elongation 26% versus 20% for C93200, and C93200 is harder (65 HB vs 55 HB). C93200 is stiffer (100 GPa vs 95 GPa) and C93200 runs hotter in service (230°C vs 200°C continuous). On the shop floor, C84400 machines more easily (excellent vs very good) and C93200 sits in a lower cost tier (premium, $$$) than C84400 (specialty, $$$$$).
C84400Choose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
C93200Choose it when strength drives the design, or when the part sees heat.
C84400 vs C93200: 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
Hardness, Rockwell B
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
Latent Heat of Fusion
Max Service Temperature (continuous)
Min Service Temperature
Same in both: Specific Heat Capacity 377 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 18 µm/m·K10 µin/in·°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) -0.28 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Same in both: Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Same in both: Embodied Water 250 L/kg30 gal/lb · Typical Recycled Content 85%
Common Calculations
Ratios derived from the values above.
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
Same in both: Specific Strength (UTS / density) 27 kN·m/kg
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 | C84400 | C93200 |
|---|---|---|
| Casting & forging | — | Yes |
| Default condition | As Cast | As Cast |
| Relative cost | $$$$$ Specialty | $$$ Premium |
| Min. machined wall | 0.8 mm | 0.8 mm |
| Best machined surface | Ra 1.6 µm | Ra 1.6 µm |
Both are offered for CNC machining. Both take the same 9 finishes: Chrome Plating, Copper Plating, Electroless Nickel (EN), Electropolishing, Gold Plating, Nickel Plating, Painting, Silver Plating, Tin Plating.
C84400 vs C93200 — frequently asked
Is C93200 stronger than C84400?
Yes. C93200 has a typical yield strength of 125 MPa (18.1 ksi) against 110 MPa (16 ksi) for C84400 — about 14% more. Tensile strength is 240 MPa (34.8 ksi) vs 234 MPa (33.9 ksi).
Which is cheaper, C84400 or C93200?
C93200 is the lower-cost material: it sits in the premium tier ($$$) while C84400 is specialty ($$$$$). 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, C84400 or C93200?
C84400. Its machinability rates excellent (90/100) against very good (78/100) for C93200; for welding the order is C84400 first (poor, 20/100) then C93200 (poor, 15/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in C84400 and C93200 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.