Nickel Alloy Nimonic 105-SA vs Nimonic 105-STA
Nickel Alloy · Nimonic 105 temper comparison
Nimonic 105-SA and Nimonic 105-STA are two conditions of the same nickel alloy grade, Nimonic 105: SA (solution treated + single age) versus STA (solution treated and aged). The chemistry is identical, so every difference below comes from the condition. Both yield at about 770 MPa — the mechanical properties are the same, and the difference is in how the stock is processed and what it is certified to (solution treated + single age versus solution treated and aged). Nimonic 105-STA is harder — 36 HRC against 34 HRC for Nimonic 105-SA — which matters for wear surfaces and threads.
Nimonic 105-STAChoose it when surface hardness matters.
Nimonic 105-SA vs Nimonic 105-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.
Elastic (Young's) Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Shear Modulus 85 GPa12.3 Msi · Bulk Modulus 185 GPa26.8 Msi · Poisson's Ratio 0.3
Physical
Density and transition temperatures.
Same in both: Density 8 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,290°C2,354 °F · Liquidus Temperature 1,345°C2,453 °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 419 J/kg·K0.1 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.8 µm/m·K6.6 µin/in·°F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Resistivity 1.3×10⁻⁶ Ω·m51.2 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.15 V · Corrosion Resistance 70 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Weldability
Same in both: Machinability 12 / 100 · Machinability Rating (AISI 1212 = 100 %) 8% · Formability (cold) 12 / 100 · Castability 35 / 100 · Brazeability / Solderability 40 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 235 MJ/kg101,032 BTU/lb · Embodied Carbon (primary production) 16 kg CO₂/kg · Embodied Water 320 L/kg38.3 gal/lb · Typical Recycled Content 30%
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.
Nimonic 105-SA vs Nimonic 105-STA — frequently asked
What is the difference between Nimonic 105-SA and Nimonic 105-STA?
Nimonic 105-SA and Nimonic 105-STA are two conditions of the same nickel alloy grade, Nimonic 105: SA (solution treated + single age) versus STA (solution treated and aged). The chemistry is identical, so every difference below comes from the condition. Both yield at about 770 MPa — the mechanical properties are the same, and the difference is in how the stock is processed and what it is certified to (solution treated + single age versus solution treated and aged).
Which condition does FabDigit quote by default, SA or STA?
STA is the default Nimonic 105 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.
When should I choose Nimonic 105-SA over Nimonic 105-STA?
Pick Nimonic 105-STA when surface hardness matters.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Nimonic 105-SA and Nimonic 105-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.