Nickel Alloy Rene 41-SA vs Rene 41-STA
Nickel Alloy · Rene 41 temper comparison
Rene 41-SA and Rene 41-STA are two conditions of the same nickel alloy grade, Rene 41: SA (solution annealed 1065–1080 °C, rapid cool) versus STA (solution treated and aged). The chemistry is identical, so every difference below comes from the condition. Rene 41-STA is the stronger of the two: yield strength 1,060 MPa (154 ksi) against 655 MPa (95 ksi) for Rene 41-SA, about 62% more; tensile strength follows at 1,420 MPa (206 ksi) vs 1,000 MPa (145 ksi). In exchange, Rene 41-SA is the more ductile: elongation 30% versus 14% for Rene 41-STA, and Rene 41-STA is harder (350 HB vs 260 HB). On the shop floor, Rene 41-SA welds better (good vs poor).
Rene 41-SAChoose it when the part is bent, formed or impact-loaded, or when it will be welded.
Rene 41-STAChoose it when strength drives the design.
Rene 41-SA vs Rene 41-STA: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all nickel alloy 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 nickel alloy 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
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 218 GPa31.6 Msi · Shear Modulus 85 GPa12.3 Msi · Bulk Modulus 190 GPa27.6 Msi · Poisson's Ratio 0.31 · Compressive Strength 1,100 MPa160 ksi · Fracture Toughness (K_IC) 95 MPa·√m86.5 ksi·√in · Charpy V-Notch Impact (RT) 30 J22.1 ft·lbf
Physical
Density and transition temperatures.
Same in both: Density 8.25 g/cm³0.3 lb/in³ · Melting Point (Solidus) 1,315°C2,399 °F · Liquidus Temperature 1,370°C2,498 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 9 W/m·K5.2 BTU/hr·ft·°F · Specific Heat Capacity 420 J/kg·K0.1 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12.1 µm/m·K6.7 µin/in·°F · Latent Heat of Fusion 290 J/g125 BTU/lb · Min Service Temperature -253°C-423 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 1.3 % IACS · Electrical Resistivity 1.31×10⁻⁶ Ω·m51.6 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V · Corrosion Resistance 78 / 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 30 / 100 · Brazeability / Solderability 45 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 230 MJ/kg98,882 BTU/lb · Embodied Carbon (primary production) 17 kg CO₂/kg · Embodied Water 300 L/kg35.9 gal/lb · Typical Recycled Content 35%
Strength versus weight
Yield strength against density for every nickel alloy grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Rene 41-SA vs Rene 41-STA — frequently asked
Is Rene 41-STA stronger than Rene 41-SA?
Yes. Rene 41-STA has a typical yield strength of 1,060 MPa (154 ksi) against 655 MPa (95 ksi) for Rene 41-SA — about 62% more. Tensile strength is 1,420 MPa (206 ksi) vs 1,000 MPa (145 ksi).
Which condition does FabDigit quote by default, SA or STA?
STA is the default Rene 41 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 is easier to machine, Rene 41-SA or Rene 41-STA?
Rene 41-SA. Its machinability rates poor (18/100) against not recommended (12/100) for Rene 41-STA; for welding the order is Rene 41-SA first (good, 55/100) then Rene 41-STA (poor, 25/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Rene 41-SA and Rene 41-STA 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.