Copper Alloy BrAZh9-4 vs C84800
Copper Alloy · grade comparison
Copper Alloy BrAZh9-4 and C84800 are both copper alloy grades. BrAZh9-4 is the stronger of the two: yield strength 180 MPa (26.1 ksi) against 124 MPa (18 ksi) for C84800, about 45% more; tensile strength follows at 450 MPa (65.3 ksi) vs 262 MPa (38 ksi). In exchange, C84800 is the more ductile: elongation 35% versus 15% for BrAZh9-4, and BrAZh9-4 is harder (110 HB vs 55 HB). BrAZh9-4 is lighter (7.6 g/cm³ vs 8.55 g/cm³ for C84800) and BrAZh9-4 is stiffer (108 GPa vs 86 GPa). On the shop floor, C84800 machines more easily (excellent vs fair), BrAZh9-4 welds better (good vs poor), and BrAZh9-4 sits in a lower cost tier (high, $$$$) than C84800 (specialty, $$$$$).
BrAZh9-4Choose it when strength drives the design, or when weight is the constraint.
C84800Choose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
BrAZh9-4 vs C84800: 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
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
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
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 377 J/kg·K0.09 BTU/lb·°F · Min Service Temperature -196°C-321 °F
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
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Polishability
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Typical Recycled Content
Same in both: Embodied Water 250 L/kg30 gal/lb
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 | BrAZh9-4 | C84800 |
|---|---|---|
| CNC machining | — | Yes |
| Default condition | — | As Cast |
| Relative cost | $$$$ High | $$$$$ Specialty |
| Min. machined wall | — | 0.8 mm |
| Best machined surface | — | Ra 1.6 µm |
| Chrome Plating | — | Yes |
| Electropolishing | — | Yes |
| Nickel Plating | — | Yes |
| Painting | — | Yes |
| Tin Plating | — | Yes |
They share 4 finishes: Copper Plating, Electroless Nickel (EN), Gold Plating, Silver Plating.
BrAZh9-4 vs C84800 — frequently asked
Is BrAZh9-4 stronger than C84800?
Yes. BrAZh9-4 has a typical yield strength of 180 MPa (26.1 ksi) against 124 MPa (18 ksi) for C84800 — about 45% more. Tensile strength is 450 MPa (65.3 ksi) vs 262 MPa (38 ksi).
Which is cheaper, BrAZh9-4 or C84800?
BrAZh9-4 is the lower-cost material: it sits in the high tier ($$$$) while C84800 is specialty ($$$$$). 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, BrAZh9-4 or C84800?
C84800. Its machinability rates excellent (88/100) against fair (40/100) for BrAZh9-4; for welding the order is BrAZh9-4 first (good, 55/100) then C84800 (poor, 20/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in BrAZh9-4 and C84800 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.