Refractory Metal Mo-La vs TZC
Refractory Metal · grade comparison
Refractory Metal Mo-La and TZC are both refractory metal grades. TZC is the stronger of the two: yield strength 930 MPa (135 ksi) against 560 MPa (81.2 ksi) for Mo-La, about 66% more; tensile strength follows at 1,050 MPa (152 ksi) vs 700 MPa (102 ksi). TZC is harder — 30 HRC against 21 HRC for Mo-La — which matters for wear surfaces and threads. Mo-La runs hotter in service (1,700°C vs 1,500°C continuous) and Mo-La conducts heat better (120 W/m·K vs 105 W/m·K). On the shop floor, TZC sits in a lower cost tier (high, $$$$) than Mo-La (specialty, $$$$$).
Mo-LaChoose it when the part sees heat.
TZCChoose it when strength drives the design, or when surface hardness matters.
Mo-La vs TZC: 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.
Elastic (Young's) Modulus
Bulk Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
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, Rockwell C
Hardness, Vickers
Same in both: Shear Modulus 122 GPa17.7 Msi · Elongation at Break 8%
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Same in both: Liquidus Temperature 2,620°C4,748 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Latent Heat of Fusion
Max Service Temperature (continuous)
Min Service Temperature
Same in both: Specific Heat Capacity 250 J/kg·K0.06 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 5.3 µm/m·K2.9 µin/in·°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
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Brazeability / Solderability
Polishability
Castability
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Same in both: Typical Recycled Content 25%
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 refractory metal grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | Mo-La | TZC |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$$ Specialty | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Mo-La vs TZC — frequently asked
Is TZC stronger than Mo-La?
Yes. TZC has a typical yield strength of 930 MPa (135 ksi) against 560 MPa (81.2 ksi) for Mo-La — about 66% more. Tensile strength is 1,050 MPa (152 ksi) vs 700 MPa (102 ksi).
Which is cheaper, Mo-La or TZC?
TZC is the lower-cost material: it sits in the high tier ($$$$) while Mo-La is specialty ($$$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
Which welds better, Mo-La or TZC?
Mo-La. Its weldability rates poor (20/100) against poor (15/100) for TZC.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Mo-La and TZC 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.