Copper Alloy C18900 vs C19000
Copper Alloy · grade comparison
Copper Alloy C18900 and C19000 are both copper alloy grades. C19000 is the stronger of the two: yield strength 448 MPa (65 ksi) against 370 MPa (53.7 ksi) for C18900, about 21% more; tensile strength follows at 483 MPa (70.1 ksi) vs 405 MPa (58.7 ksi). C19000 is harder — 150 HV against 120 HV for C18900 — which matters for wear surfaces and threads. C19000 is stiffer (125 GPa vs 117 GPa). On the shop floor, C18900 welds better (very good vs good) and C19000 forms better (good vs fair).
C18900Choose it when it will be welded.
C19000Choose it when strength drives the design, or when surface hardness matters.
C18900 vs C19000: 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
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Bulk Modulus 138 GPa20 Msi · Poisson's Ratio 0.34 · Elongation at Break 8%
Physical
Density and transition temperatures.
Melting Point (Solidus)
Liquidus Temperature
Same in both: Density 8.89 g/cm³0.32 lb/in³
Thermal
How each material carries heat and how hot it can run.
Specific Heat Capacity
Same in both: Thermal Conductivity 180 W/m·K104 BTU/hr·ft·°F · Thermal Expansion (CTE, 20–100 °C) 17.6 µm/m·K9.8 µin/in·°F · Latent Heat of Fusion 205 J/g88.1 BTU/lb · Max Service Temperature (continuous) 200°C392 °F · 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
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Same in both: Machinability Rating (AISI 1212 = 100 %) 20% · Polishability 75 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Carbon (primary production)
Same in both: Embodied Energy (primary production) 57 MJ/kg24,506 BTU/lb · Embodied Water 250 L/kg30 gal/lb · Typical Recycled Content 35%
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 | C18900 | C19000 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 4 finishes: Copper Plating, Electroless Nickel (EN), Gold Plating, Silver Plating.
C18900 vs C19000 — frequently asked
Is C19000 stronger than C18900?
Yes. C19000 has a typical yield strength of 448 MPa (65 ksi) against 370 MPa (53.7 ksi) for C18900 — about 21% more. Tensile strength is 483 MPa (70.1 ksi) vs 405 MPa (58.7 ksi).
Which is cheaper, C18900 or C19000?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, C18900 or C19000?
C18900, by a small margin. Both rate poor for machinability — 32/100 against 25/100 for C19000; for welding the order is C18900 first (very good, 80/100) then C19000 (good, 55/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in C18900 and C19000 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.