Copper Alloy C52100 vs C61900
Copper Alloy · grade comparison
Copper Alloy C52100 and C61900 are both copper alloy grades. C52100 is the stronger of the two: yield strength 585 MPa (84.8 ksi) against 310 MPa (45 ksi) for C61900, about 89% more. In exchange, C61900 is the more ductile: elongation 25% versus 10% for C52100, and C52100 is harder (190 HV vs 180 HV). C61900 is lighter (7.58 g/cm³ vs 8.8 g/cm³ for C52100) and C61900 is stiffer (117 GPa vs 110 GPa). On the shop floor, C61900 welds better (very good vs fair) and C61900 sits in a lower cost tier (high, $$$$) than C52100 (specialty, $$$$$).
C52100Choose it when strength drives the design.
C61900Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
C52100 vs C61900: 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
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Fatigue Strength (Endurance Limit)
Hardness, Rockwell B
Hardness, Vickers
Reduction in Area
Compressive Strength
Charpy V-Notch Impact (RT)
Same in both: Bulk Modulus 115 GPa16.7 Msi · Shear Strength 400 MPa58 ksi · Hardness, Brinell 170 HB
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)
Max Service Temperature (continuous)
Latent Heat of Fusion
Same in both: Min Service Temperature -200°C-328 °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 Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Brazeability / Solderability
Polishability
Castability
Same in both: Machinability 30 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
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 | C52100 | C61900 |
|---|---|---|
| CNC machining | Yes | — |
| Sheet metal | Yes | — |
| Default condition | — | — |
| Relative cost | $$$$$ Specialty | $$$$ High |
| Min. machined wall | 0.8 mm | — |
| Best machined surface | Ra 1.6 µm | — |
| Chrome Plating | Yes | — |
| Electropolishing | Yes | — |
| Nickel Plating | Yes | — |
| Painting | Yes | — |
| Tin Plating | Yes | — |
They share 4 finishes: Copper Plating, Electroless Nickel (EN), Gold Plating, Silver Plating.
C52100 vs C61900 — frequently asked
Is C52100 stronger than C61900?
Yes. C52100 has a typical yield strength of 585 MPa (84.8 ksi) against 310 MPa (45 ksi) for C61900 — about 89% more. Tensile strength is 660 MPa (95.7 ksi) vs 630 MPa (91.4 ksi).
Which is cheaper, C52100 or C61900?
C61900 is the lower-cost material: it sits in the high tier ($$$$) while C52100 is specialty ($$$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
Which welds better, C52100 or C61900?
C61900. Its weldability rates very good (75/100) against fair (40/100) for C52100.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C52100 and C61900 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.