Refractory Metal Pure Mo vs TZM
Refractory Metal · grade comparison
Refractory Metal Pure Mo and TZM are both refractory metal grades. TZM is the stronger of the two: yield strength 760 MPa (110 ksi) against 590 MPa (85.6 ksi) for Pure Mo, about 29% more; tensile strength follows at 900 MPa (131 ksi) vs 700 MPa (102 ksi). TZM is the more ductile: elongation 15% versus 10% for Pure Mo, and TZM is harder (255 HB vs 240 HB). TZM runs hotter in service (1,300°C vs 500°C continuous) and Pure Mo conducts heat better (138 W/m·K vs 118 W/m·K).
TZMChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
Pure Mo 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
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
Hardness, Rockwell C
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)
Same in both: Latent Heat of Fusion 390 J/g168 BTU/lb · Min Service Temperature 20°C68 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.2 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Brazeability / Solderability
Same in both: Weldability 20 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Carbon (primary production)
Typical Recycled Content
Same in both: Embodied Energy (primary production) 380 MJ/kg163,371 BTU/lb · Embodied Water 300 L/kg35.9 gal/lb
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 | Pure Mo | TZM |
|---|---|---|
| Default condition | — | Stress Relieved |
| Relative cost | $$$$$ Specialty | $$$$$ Specialty |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Pure Mo vs TZM — frequently asked
Is TZM stronger than Pure Mo?
Yes. TZM has a typical yield strength of 760 MPa (110 ksi) against 590 MPa (85.6 ksi) for Pure Mo — about 29% more. Tensile strength is 900 MPa (131 ksi) vs 700 MPa (102 ksi).
Which is cheaper, Pure Mo or TZM?
Both sit in the same relative cost tier ($$$$$, specialty); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, Pure Mo or TZM?
TZM, by a small margin. Both rate fair for machinability — 45/100 against 40/100 for Pure Mo.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Pure Mo 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.