Refractory Metal Zr 702 vs Zr 702C
Refractory Metal · grade comparison
Refractory Metal Zr 702 and Zr 702C are both refractory metal grades. Zr 702 is the stronger of the two: yield strength 290 MPa (42.1 ksi) against 250 MPa (36.3 ksi) for Zr 702C, about 16% more. Zr 702 is the more ductile: elongation 30% versus 16% for Zr 702C.
Zr 702Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
Zr 702 vs Zr 702C: 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.
Bulk Modulus
Poisson's Ratio
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 99 GPa14.4 Msi · Shear Modulus 36 GPa5.2 Msi · Tensile Strength (Ultimate) 450 MPa65.3 ksi · Shear Strength 290 MPa42.1 ksi · Hardness, Brinell 150 HB
Physical
Density and transition temperatures.
Liquidus Temperature
Same in both: Density 6.51 g/cm³0.24 lb/in³ · Melting Point (Solidus) 1,852°C3,366 °F
Thermal
How each material carries heat and how hot it can run.
Latent Heat of Fusion
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 · 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).
Galvanic Potential (seawater, vs SCE)
Same in both: Corrosion Resistance 92 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Castability
Polishability
Same in both: Machinability 35 / 100 · Brazeability / Solderability 25 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Same in both: Embodied Energy (primary production) 1,250 MJ/kg537,404 BTU/lb
Common Calculations
Ratios derived from the values above.
Modulus of Resilience
Same in both: Specific Strength (UTS / density) 69 kN·m/kg · Specific Stiffness (E / density) 15.2 MN·m/kg · Thermal Diffusivity 11.9 mm²/s · Thermal Shock Resistance Index 17
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.
Manufacturing and finishing
| Capability | Zr 702 | Zr 702C |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Zr 702 vs Zr 702C — frequently asked
Is Zr 702 stronger than Zr 702C?
Yes. Zr 702 has a typical yield strength of 290 MPa (42.1 ksi) against 250 MPa (36.3 ksi) for Zr 702C — about 16% more. Tensile strength is 450 MPa (65.3 ksi) vs 450 MPa (65.3 ksi).
Which is cheaper, Zr 702 or Zr 702C?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, Zr 702 or Zr 702C?
Zr 702. Its weldability rates very good (80/100) against very good (75/100) for Zr 702C.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Zr 702 and Zr 702C 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.