Copper Alloy CuCrZr As Printed vs CuCrZr-SR
Copper Alloy · CuCrZr temper comparison
CuCrZr As Printed and CuCrZr-SR are two conditions of the same copper alloy grade, CuCrZr: As Printed (as built (as printed)) versus SR (stress relieved). The chemistry is identical, so every difference below comes from the condition. CuCrZr-SR is the stronger of the two: yield strength 160 MPa (23.2 ksi) against 130 MPa (18.9 ksi) for CuCrZr As Printed, about 23% more; tensile strength follows at 260 MPa (37.7 ksi) vs 230 MPa (33.4 ksi). CuCrZr-SR is harder — 85 HB against 70 HB for CuCrZr As Printed — which matters for wear surfaces and threads. CuCrZr-SR runs hotter in service (250°C vs 200°C continuous) and CuCrZr-SR conducts heat better (220 W/m·K vs 180 W/m·K). On the shop floor, CuCrZr-SR welds better (good vs fair) and CuCrZr-SR forms better (good vs fair).
CuCrZr-SRChoose it when strength drives the design, or when surface hardness matters.
CuCrZr As Printed vs CuCrZr-SR: 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
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Shear Modulus 47 GPa6.8 Msi · Bulk Modulus 137 GPa19.9 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.89 g/cm³0.32 lb/in³ · Melting Point (Solidus) 1,070°C1,958 °F · Liquidus Temperature 1,085°C1,985 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 385 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 17 µm/m·K9.4 µin/in·°F · Latent Heat of Fusion 205 J/g88.1 BTU/lb · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.25 V · Corrosion Resistance 42 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Castability 50 / 100 · Brazeability / Solderability 60 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 57 MJ/kg24,506 BTU/lb · Embodied Carbon (primary production) 3.9 kg CO₂/kg · Embodied Water 300 L/kg35.9 gal/lb · Typical Recycled Content 25%
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.
CuCrZr As Printed vs CuCrZr-SR — frequently asked
Is CuCrZr-SR stronger than CuCrZr As Printed?
Yes. CuCrZr-SR has a typical yield strength of 160 MPa (23.2 ksi) against 130 MPa (18.9 ksi) for CuCrZr As Printed — about 23% more. Tensile strength is 260 MPa (37.7 ksi) vs 230 MPa (33.4 ksi).
Which condition does FabDigit quote by default, As Printed or SR?
Aged is the default CuCrZr condition in the FabDigit quote flow (neither As Printed nor SR). The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
Which is easier to machine, CuCrZr As Printed or CuCrZr-SR?
CuCrZr-SR, by a small margin. Both rate fair for machinability — 40/100 against 35/100 for CuCrZr As Printed; for welding the order is CuCrZr-SR first (good, 60/100) then CuCrZr As Printed (fair, 50/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in CuCrZr As Printed and CuCrZr-SR 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.