Refractory Metal Mo-La As Sintered vs Mo-La-SR
Refractory Metal · Mo-La temper comparison
Mo-La As Sintered and Mo-La-SR are two conditions of the same refractory metal grade, Mo-La: As Sintered (sintered) versus SR (stress relieved). The chemistry is identical, so every difference below comes from the condition. Mo-La-SR is the stronger of the two: yield strength 490 MPa (71.1 ksi) against 300 MPa (43.5 ksi) for Mo-La As Sintered, about 63% more; tensile strength follows at 640 MPa (92.8 ksi) vs 380 MPa (55.1 ksi). Mo-La-SR is the more ductile: elongation 13% versus 3% for Mo-La As Sintered, and Mo-La-SR is harder (209 HB vs 171 HB). Mo-La-SR is stiffer (320 GPa vs 280 GPa) and Mo-La-SR conducts heat better (125 W/m·K vs 105 W/m·K).
Mo-La-SRChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
Mo-La As Sintered vs Mo-La-SR: 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
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, Rockwell C
Hardness, Vickers
Same in both: Shear Modulus 122 GPa17.7 Msi · Bulk Modulus 265 GPa38.4 Msi · Poisson's Ratio 0.31
Physical
Density and transition temperatures.
Density
Same in both: Melting Point (Solidus) 2,620°C4,748 °F · Liquidus Temperature 2,620°C4,748 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 250 J/kg·K0.06 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 5.3 µm/m·K2.9 µin/in·°F · Latent Heat of Fusion 390 J/g168 BTU/lb · Min Service Temperature -50°C-58 °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) -0.15 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 65 / 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 25%
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.
Mo-La As Sintered vs Mo-La-SR — frequently asked
Is Mo-La-SR stronger than Mo-La As Sintered?
Yes. Mo-La-SR has a typical yield strength of 490 MPa (71.1 ksi) against 300 MPa (43.5 ksi) for Mo-La As Sintered — about 63% more. Tensile strength is 640 MPa (92.8 ksi) vs 380 MPa (55.1 ksi).
Which condition does FabDigit quote by default, As Sintered or SR?
As Rolled is the default Mo-La condition in the FabDigit quote flow (neither As Sintered nor SR). 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 is easier to machine, Mo-La As Sintered or Mo-La-SR?
Mo-La-SR. Its machinability rates fair (38/100) against poor (30/100) for Mo-La As Sintered; for welding the order is Mo-La-SR first (poor, 22/100) then Mo-La As Sintered (poor, 15/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Mo-La As Sintered and Mo-La-SR 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.