Refractory Metal Mo-47.5Re-CW vs Mo-47.5Re-SR
Refractory Metal · Mo-47.5Re temper comparison
Mo-47.5Re-CW and Mo-47.5Re-SR are two conditions of the same refractory metal grade, Mo-47.5Re: CW (cold worked) versus SR (stress relieved). The chemistry is identical, so every difference below comes from the condition. Mo-47.5Re-CW is the stronger of the two: yield strength 1,600 MPa (232 ksi) against 1,000 MPa (145 ksi) for Mo-47.5Re-SR, about 60% more; tensile strength follows at 1,800 MPa (261 ksi) vs 1,240 MPa (180 ksi). In exchange, Mo-47.5Re-SR is the more ductile: elongation 12% versus 5% for Mo-47.5Re-CW, and Mo-47.5Re-CW is harder (47 HRC vs 34 HRC). Mo-47.5Re-SR runs hotter in service (1,400°C vs 1,100°C continuous). On the shop floor, Mo-47.5Re-SR welds better (very good vs good).
Mo-47.5Re-CWChoose it when strength drives the design.
Mo-47.5Re-SRChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Mo-47.5Re-CW 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.
Elastic (Young's) Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Shear Strength
Hardness, Rockwell C
Hardness, Vickers
Same in both: Shear Modulus 140 GPa20.3 Msi · Bulk Modulus 285 GPa41.3 Msi · Poisson's Ratio 0.29
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.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: 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.
Electrical Conductivity
Electrical Resistivity
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
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: 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-CW vs Mo-47.5Re-SR — frequently asked
Is Mo-47.5Re-CW stronger than Mo-47.5Re-SR?
Yes. Mo-47.5Re-CW has a typical yield strength of 1,600 MPa (232 ksi) against 1,000 MPa (145 ksi) for Mo-47.5Re-SR — about 60% more. Tensile strength is 1,800 MPa (261 ksi) vs 1,240 MPa (180 ksi).
Which condition does FabDigit quote by default, CW 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-CW or Mo-47.5Re-SR?
Mo-47.5Re-SR. Its weldability rates very good (75/100) against good (65/100) for Mo-47.5Re-CW.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Mo-47.5Re-CW 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.