Refractory Metal Zr 700 Annealed vs Zr 700-CW
Refractory Metal · Zr 700 temper comparison
Zr 700 Annealed and Zr 700-CW are two conditions of the same refractory metal grade, Zr 700: Annealed versus CW (cold worked). The chemistry is identical, so every difference below comes from the condition. Zr 700-CW is the stronger of the two: yield strength 440 MPa (63.8 ksi) against 190 MPa (27.6 ksi) for Zr 700 Annealed, about 132% more; tensile strength follows at 520 MPa (75.4 ksi) vs 330 MPa (47.9 ksi). In exchange, Zr 700 Annealed is the more ductile: elongation 32% versus 10% for Zr 700-CW, and Zr 700-CW is harder (185 HB vs 120 HB). Zr 700 Annealed runs hotter in service (350°C vs 250°C continuous). On the shop floor, Zr 700-CW machines more easily (45 vs 35 out of 100) and Zr 700 Annealed welds better (very good vs good).
Zr 700 AnnealedChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Zr 700-CWChoose it when strength drives the design, or when the part is machined in volume.
Zr 700 Annealed vs Zr 700-CW: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all refractory metal 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 refractory metal 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.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 99 GPa14.4 Msi · Shear Modulus 36 GPa5.2 Msi · Bulk Modulus 92 GPa13.3 Msi · Poisson's Ratio 0.34 · Reduction in Area 45% · Compressive Strength 200 MPa29 ksi · Shear Strength 200 MPa29 ksi · Fatigue Strength (Endurance Limit) 170 MPa24.7 ksi · Fracture Toughness (K_IC) 70 MPa·√m63.7 ksi·√in · Charpy V-Notch Impact (RT) 80 J59 ft·lbf
Physical
Density and transition temperatures.
Same in both: Density 6.51 g/cm³0.24 lb/in³ · Melting Point (Solidus) 1,852°C3,366 °F · Liquidus Temperature 1,855°C3,371 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 22 W/m·K12.7 BTU/hr·ft·°F · Specific Heat Capacity 285 J/kg·K0.07 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 5.9 µm/m·K3.3 µin/in·°F · Latent Heat of Fusion 155 J/g66.6 BTU/lb · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 4.3 % IACS · Electrical Resistivity 4×10⁻⁷ Ω·m15.7 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.2 V · Corrosion Resistance 90 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 30% · Castability 25 / 100 · Brazeability / Solderability 25 / 100 · Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 1,400 MJ/kg601,892 BTU/lb · Embodied Carbon (primary production) 90 kg CO₂/kg · Embodied Water 1,500 L/kg180 gal/lb · Typical Recycled Content 20%
Strength versus weight
Yield strength against density for every refractory metal grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Zr 700 Annealed vs Zr 700-CW — frequently asked
Is Zr 700-CW stronger than Zr 700 Annealed?
Yes. Zr 700-CW has a typical yield strength of 440 MPa (63.8 ksi) against 190 MPa (27.6 ksi) for Zr 700 Annealed — about 132% more. Tensile strength is 520 MPa (75.4 ksi) vs 330 MPa (47.9 ksi).
Which condition does FabDigit quote by default, Annealed or CW?
Annealed is the default Zr 700 condition in the FabDigit quote flow. 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, Zr 700 Annealed or Zr 700-CW?
Zr 700-CW, by a small margin. Both rate fair for machinability — 45/100 against 35/100 for Zr 700 Annealed; for welding the order is Zr 700 Annealed first (very good, 75/100) then Zr 700-CW (good, 65/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Zr 700 Annealed and Zr 700-CW 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.