Refractory Metal Zr 704 Annealed vs Zr 704-HW
Refractory Metal · Zr 704 temper comparison
Zr 704 Annealed and Zr 704-HW are two conditions of the same refractory metal grade, Zr 704: Annealed versus HW (hot Worked / As-Forged). The chemistry is identical, so every difference below comes from the condition. Zr 704-HW is the stronger of the two: yield strength 320 MPa (46.4 ksi) against 300 MPa (43.5 ksi) for Zr 704 Annealed, about 7% more. In exchange, Zr 704 Annealed is the more ductile: elongation 22% versus 18% for Zr 704-HW.
Zr 704 AnnealedChoose it when the part is bent, formed or impact-loaded.
Zr 704-HWChoose it when strength drives the design.
Zr 704 Annealed vs Zr 704-HW: 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
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
Same in both: Elastic (Young's) Modulus 99 GPa14.4 Msi · Shear Modulus 36 GPa5.2 Msi · Bulk Modulus 100 GPa14.5 Msi · Poisson's Ratio 0.35
Physical
Density and transition temperatures.
Same in both: Density 6.57 g/cm³0.24 lb/in³ · Melting Point (Solidus) 1,840°C3,344 °F · Liquidus Temperature 1,855°C3,371 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 14.6 W/m·K8.4 BTU/hr·ft·°F · Specific Heat Capacity 285 J/kg·K0.07 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 6 µm/m·K3.3 µin/in·°F · Latent Heat of Fusion 210 J/g90.3 BTU/lb · Max Service Temperature (continuous) 400°C752 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 3.4 % IACS · Electrical Resistivity 5×10⁻⁷ Ω·m19.7 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V · Corrosion Resistance 92 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Weldability 80 / 100 · Castability 25 / 100 · Brazeability / Solderability 20 / 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) 95 kg CO₂/kg · Embodied Water 900 L/kg108 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 704 Annealed vs Zr 704-HW — frequently asked
Is Zr 704-HW stronger than Zr 704 Annealed?
Yes. Zr 704-HW has a typical yield strength of 320 MPa (46.4 ksi) against 300 MPa (43.5 ksi) for Zr 704 Annealed — about 7% more. Tensile strength is 480 MPa (69.6 ksi) vs 470 MPa (68.2 ksi).
Which condition does FabDigit quote by default, Annealed or HW?
Annealed is the default Zr 704 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.
When should I choose Zr 704 Annealed over Zr 704-HW?
Pick Zr 704 Annealed when the part is bent, formed or impact-loaded. Pick Zr 704-HW when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Zr 704 Annealed and Zr 704-HW 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.