Refractory Metal Mo1/Mo2 vs TZM
Refractory Metal · grade comparison
Refractory Metal Mo1/Mo2 and TZM are both refractory metal grades. TZM is the stronger of the two: yield strength 760 MPa (110 ksi) against 580 MPa (84.1 ksi) for Mo1/Mo2, about 31% more; tensile strength follows at 900 MPa (131 ksi) vs 700 MPa (102 ksi). In exchange, Mo1/Mo2 is the more ductile: elongation 18% versus 15% for TZM, and TZM is harder (255 HB vs 225 HB). TZM runs hotter in service (1,300°C vs 1,000°C continuous) and Mo1/Mo2 conducts heat better (138 W/m·K vs 118 W/m·K). On the shop floor, Mo1/Mo2 sits in a lower cost tier (high, $$$$) than TZM (specialty, $$$$$).
Mo1/Mo2Choose it when the part is bent, formed or impact-loaded, or when cost is the deciding factor.
TZMChoose it when strength drives the design, or when the part sees heat.
Mo1/Mo2 vs TZM: 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
Shear Modulus
Bulk Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Reduction in Area 45% · Charpy V-Notch Impact (RT) 8 J5.9 ft·lbf
Physical
Density and transition temperatures.
Melting Point (Solidus)
Same in both: Density 10.22 g/cm³0.37 lb/in³ · Liquidus Temperature 2,623°C4,753 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Min Service Temperature
Same in both: Latent Heat of Fusion 390 J/g168 BTU/lb
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Galvanic Potential (seawater, vs SCE)
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Brazeability / Solderability
Polishability
Same in both: Weldability 20 / 100
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 | Mo1/Mo2 | TZM |
|---|---|---|
| Default condition | — | Stress Relieved |
| Relative cost | $$$$ High | $$$$$ Specialty |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Mo1/Mo2 vs TZM — frequently asked
Is TZM stronger than Mo1/Mo2?
Yes. TZM has a typical yield strength of 760 MPa (110 ksi) against 580 MPa (84.1 ksi) for Mo1/Mo2 — about 31% more. Tensile strength is 900 MPa (131 ksi) vs 700 MPa (102 ksi).
Which is cheaper, Mo1/Mo2 or TZM?
Mo1/Mo2 is the lower-cost material: it sits in the high tier ($$$$) while TZM is specialty ($$$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
Which is easier to machine, Mo1/Mo2 or TZM?
TZM, by a small margin. Both rate fair for machinability — 45/100 against 40/100 for Mo1/Mo2.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Mo1/Mo2 and TZM 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.