Refractory Metal Pure Mo Sintered vs Pure Mo Stress Relieved
Refractory Metal · Pure Mo temper comparison
Pure Mo Sintered and Pure Mo Stress Relieved are two conditions of the same refractory metal grade, Pure Mo: Sintered versus Stress Relieved. The chemistry is identical, so every difference below comes from the condition. Pure Mo Stress Relieved is the stronger of the two: yield strength 450 MPa (65.3 ksi) against 300 MPa (43.5 ksi) for Pure Mo Sintered, about 50% more; tensile strength follows at 550 MPa (79.8 ksi) vs 400 MPa (58 ksi). Pure Mo Stress Relieved is the more ductile: elongation 20% versus 5% for Pure Mo Sintered, and Pure Mo Stress Relieved is harder (240 HB vs 160 HB). Pure Mo Stress Relieved is stiffer (320 GPa vs 290 GPa).
Pure Mo Stress RelievedChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
Pure Mo Sintered vs Pure Mo Stress Relieved: 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.
Pure Mo SinteredPure Mo Stress Relieved
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) 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, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Shear Modulus 125 GPa18.1 Msi · Bulk Modulus 230 GPa33.4 Msi · Poisson's Ratio 0.31
Physical
Density and transition temperatures.
Density
Same in both: Melting Point (Solidus) 2,623°C4,753 °F · Liquidus Temperature 2,623°C4,753 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 250 J/kg·K0.06 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 5.2 µm/m·K2.9 µin/in·°F · Latent Heat of Fusion 390 J/g168 BTU/lb · Max Service Temperature (continuous) 500°C932 °F · 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 %)
Weldability
Formability (cold)
Same in both: Brazeability / Solderability 70 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 380 MJ/kg163,371 BTU/lb · Embodied Carbon (primary production) 25 kg CO₂/kg · Embodied Water 300 L/kg35.9 gal/lb · Typical Recycled Content 30%
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.
Pure Mo Sintered vs Pure Mo Stress Relieved — frequently asked
Is Pure Mo Stress Relieved stronger than Pure Mo Sintered?
Yes. Pure Mo Stress Relieved has a typical yield strength of 450 MPa (65.3 ksi) against 300 MPa (43.5 ksi) for Pure Mo Sintered — about 50% more. Tensile strength is 550 MPa (79.8 ksi) vs 400 MPa (58 ksi).
Which condition does FabDigit quote by default, Sintered or Stress Relieved?
As Rolled is the default Pure Mo condition in the FabDigit quote flow (neither Sintered nor Stress Relieved). The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
Which welds better, Pure Mo Sintered or Pure Mo Stress Relieved?
Pure Mo Stress Relieved. Its weldability rates poor (20/100) against poor (15/100) for Pure Mo Sintered.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Pure Mo Sintered and Pure Mo Stress Relieved 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.