Refractory Metal Mo-47.5Re-ANN vs Mo-47.5Re-SR
Refractory Metal · Mo-47.5Re temper comparison
Mo-47.5Re-ANN and Mo-47.5Re-SR are two conditions of the same refractory metal grade, Mo-47.5Re: ANN (annealed) versus SR (stress relieved). The chemistry is identical, so every difference below comes from the condition. Mo-47.5Re-SR is the stronger of the two: yield strength 1,000 MPa (145 ksi) against 490 MPa (71.1 ksi) for Mo-47.5Re-ANN, about 104% more; tensile strength follows at 1,240 MPa (180 ksi) vs 860 MPa (125 ksi). In exchange, Mo-47.5Re-ANN is the more ductile: elongation 26% versus 12% for Mo-47.5Re-SR, and Mo-47.5Re-SR is harder (34 HRC vs 23 HRC). Mo-47.5Re-ANN runs hotter in service (2,000°C vs 1,400°C continuous).
Mo-47.5Re-ANNChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Mo-47.5Re-SRChoose it when strength drives the design.
Mo-47.5Re-ANN vs Mo-47.5Re-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.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Hardness, Rockwell C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 360 GPa52.2 Msi · Shear Modulus 140 GPa20.3 Msi · Bulk Modulus 285 GPa41.3 Msi · Poisson's Ratio 0.29 · Shear Strength 740 MPa107 ksi
Physical
Density and transition temperatures.
Same in both: Density 13.5 g/cm³0.49 lb/in³ · Melting Point (Solidus) 2,500°C4,532 °F · Liquidus Temperature 2,540°C4,604 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 45 W/m·K26 BTU/hr·ft·°F · Specific Heat Capacity 195 J/kg·K0.05 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 5.7 µm/m·K3.2 µin/in·°F · Latent Heat of Fusion 290 J/g125 BTU/lb · Min Service Temperature -269°C-452 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 5.7 % IACS · Electrical Resistivity 3×10⁻⁷ Ω·m11.8 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Corrosion Resistance 55 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 12% · Castability 35 / 100 · Brazeability / Solderability 70 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 5,000 MJ/kg2,149,615 BTU/lb · Embodied Carbon (primary production) 330 kg CO₂/kg · Typical Recycled Content 40%
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-47.5Re-ANN vs Mo-47.5Re-SR — frequently asked
Is Mo-47.5Re-SR stronger than Mo-47.5Re-ANN?
Yes. Mo-47.5Re-SR has a typical yield strength of 1,000 MPa (145 ksi) against 490 MPa (71.1 ksi) for Mo-47.5Re-ANN — about 104% more. Tensile strength is 1,240 MPa (180 ksi) vs 860 MPa (125 ksi).
Which condition does FabDigit quote by default, ANN or SR?
SR is the default Mo-47.5Re condition in the FabDigit quote flow. 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, Mo-47.5Re-ANN or Mo-47.5Re-SR?
Mo-47.5Re-ANN. Its weldability rates very good (80/100) against very good (75/100) for Mo-47.5Re-SR.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Mo-47.5Re-ANN and Mo-47.5Re-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.