Refractory Metal Mo-30W vs TZM
Refractory Metal · grade comparison
Refractory Metal Mo-30W and TZM are both refractory metal grades. TZM is the stronger of the two: yield strength 760 MPa (110 ksi) against 620 MPa (89.9 ksi) for Mo-30W, about 23% more; tensile strength follows at 900 MPa (131 ksi) vs 760 MPa (110 ksi). In exchange, Mo-30W is the more ductile: elongation 18% versus 15% for TZM, and TZM is harder (26 HRC vs 23 HRC). TZM is lighter (10.22 g/cm³ vs 11.9 g/cm³ for Mo-30W) and Mo-30W is stiffer (340 GPa vs 315 GPa). On the shop floor, TZM machines more easily (fair vs poor) and Mo-30W sits in a lower cost tier (high, $$$$) than TZM (specialty, $$$$$).
Mo-30WChoose 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 weight is the constraint.
Mo-30W 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, Rockwell C
Hardness, Vickers
Hardness, Brinell
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Liquidus Temperature
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Max Service Temperature (continuous)
Min Service Temperature
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 %)
Castability
Brazeability / Solderability
Same in both: Weldability 20 / 100 · Formability (cold) 25 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
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-30W | TZM |
|---|---|---|
| Default condition | — | Stress Relieved |
| Relative cost | $$$$ High | $$$$$ Specialty |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Mo-30W vs TZM — frequently asked
Is TZM stronger than Mo-30W?
Yes. TZM has a typical yield strength of 760 MPa (110 ksi) against 620 MPa (89.9 ksi) for Mo-30W — about 23% more. Tensile strength is 900 MPa (131 ksi) vs 760 MPa (110 ksi).
Which is cheaper, Mo-30W or TZM?
Mo-30W is the lower-cost material: it sits in the high tier ($$$$) while TZM is specialty ($$$$$). 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, Mo-30W or TZM?
TZM. Its machinability rates fair (45/100) against poor (30/100) for Mo-30W.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Mo-30W 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.