Refractory Metal Mo-30W vs Mo-41Re
Refractory Metal · grade comparison
Refractory Metal Mo-30W and Mo-41Re are both refractory metal grades. Mo-41Re is the stronger of the two: yield strength 900 MPa (131 ksi) against 620 MPa (89.9 ksi) for Mo-30W, about 45% more; tensile strength follows at 1,100 MPa (160 ksi) vs 760 MPa (110 ksi). In exchange, Mo-30W is the more ductile: elongation 18% versus 15% for Mo-41Re, and Mo-41Re is harder (33 HRC vs 23 HRC). Mo-30W is lighter (11.9 g/cm³ vs 13.6 g/cm³ for Mo-41Re) and Mo-41Re is stiffer (360 GPa vs 340 GPa). On the shop floor, Mo-41Re welds better (very good vs poor).
Mo-30WChoose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
Mo-41ReChoose it when strength drives the design, or when the part sees heat.
Mo-30W vs Mo-41Re: 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
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
Same in both: Poisson's Ratio 0.3
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).
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)
Castability
Brazeability / Solderability
Same in both: 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 | Mo-41Re |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Mo-30W vs Mo-41Re — frequently asked
Is Mo-41Re stronger than Mo-30W?
Yes. Mo-41Re has a typical yield strength of 900 MPa (131 ksi) against 620 MPa (89.9 ksi) for Mo-30W — about 45% more. Tensile strength is 1,100 MPa (160 ksi) vs 760 MPa (110 ksi).
Which is cheaper, Mo-30W or Mo-41Re?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, Mo-30W or Mo-41Re?
Mo-30W, by a small margin. Both rate poor for machinability — 30/100 against 22/100 for Mo-41Re; for welding the order is Mo-41Re first (very good, 70/100) then Mo-30W (poor, 20/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Mo-30W and Mo-41Re 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.