Refractory Metal Mo-41Re-CW vs Mo-41Re-SR
Refractory Metal · Mo-41Re temper comparison
Mo-41Re-CW and Mo-41Re-SR are two conditions of the same refractory metal grade, Mo-41Re: CW (cold worked) versus SR (stress relieved). The chemistry is identical, so every difference below comes from the condition. Mo-41Re-CW is the stronger of the two: yield strength 1,300 MPa (189 ksi) against 900 MPa (131 ksi) for Mo-41Re-SR, about 44% more; tensile strength follows at 1,450 MPa (210 ksi) vs 1,100 MPa (160 ksi). In exchange, Mo-41Re-SR is the more ductile: elongation 15% versus 8% for Mo-41Re-CW, and Mo-41Re-CW is harder (42 HRC vs 33 HRC). Mo-41Re-SR runs hotter in service (1,300°C vs 1,000°C continuous). On the shop floor, Mo-41Re-SR welds better (very good vs good).
Mo-41Re-CWChoose it when strength drives the design.
Mo-41Re-SRChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Mo-41Re-CW vs Mo-41Re-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
Fatigue Strength (Endurance Limit)
Hardness, Rockwell C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 360 GPa52.2 Msi · Shear Modulus 138 GPa20 Msi · Bulk Modulus 300 GPa43.5 Msi · Poisson's Ratio 0.3 · Shear Strength 650 MPa94.3 ksi · Fracture Toughness (K_IC) 35 MPa·√m31.9 ksi·√in
Physical
Density and transition temperatures.
Same in both: Density 13.6 g/cm³0.49 lb/in³ · Melting Point (Solidus) 2,500°C4,532 °F · Liquidus Temperature 2,560°C4,640 °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 210 J/kg·K0.05 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 5.8 µm/m·K3.2 µin/in·°F · Latent Heat of Fusion 300 J/g129 BTU/lb · Min Service Temperature -269°C-452 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 6.2 % IACS · Electrical Resistivity 2.8×10⁻⁷ Ω·m11 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.15 V · Corrosion Resistance 58 / 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 %) 15% · Brazeability / Solderability 65 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 900 MJ/kg386,931 BTU/lb · Embodied Carbon (primary production) 60 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-41Re-CW vs Mo-41Re-SR — frequently asked
Is Mo-41Re-CW stronger than Mo-41Re-SR?
Yes. Mo-41Re-CW has a typical yield strength of 1,300 MPa (189 ksi) against 900 MPa (131 ksi) for Mo-41Re-SR — about 44% more. Tensile strength is 1,450 MPa (210 ksi) vs 1,100 MPa (160 ksi).
Which condition does FabDigit quote by default, CW or SR?
SR is the default Mo-41Re 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-41Re-CW or Mo-41Re-SR?
Mo-41Re-SR. Its weldability rates very good (70/100) against good (60/100) for Mo-41Re-CW.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Mo-41Re-CW and Mo-41Re-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.