Nickel Alloy N07773-SA vs N07773-STA
Nickel Alloy · N07773 temper comparison
N07773-SA and N07773-STA are two conditions of the same nickel alloy grade, N07773: SA (solution annealed) versus STA (solution treated and aged). The chemistry is identical, so every difference below comes from the condition. N07773-STA is the stronger of the two: yield strength 1,030 MPa (149 ksi) against 450 MPa (65.3 ksi) for N07773-SA, about 129% more; tensile strength follows at 1,275 MPa (185 ksi) vs 900 MPa (131 ksi). In exchange, N07773-SA is the more ductile: elongation 45% versus 16% for N07773-STA, and N07773-STA is harder (350 HB vs 200 HB). On the shop floor, N07773-SA welds better (good vs fair).
N07773-SAChoose it when the part is bent, formed or impact-loaded, or when it will be welded.
N07773-STAChoose it when strength drives the design.
N07773-SA vs N07773-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
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 77 GPa11.2 Msi · Bulk Modulus 165 GPa23.9 Msi · Poisson's Ratio 0.3 · Shear Strength 760 MPa110 ksi · Fracture Toughness (K_IC) 90 MPa·√m81.9 ksi·√in · Hardness, Rockwell C 38 HRC · Hardness, Vickers 375 HV
Physical
Density and transition temperatures.
Same in both: Density 8.2 g/cm³0.3 lb/in³ · Melting Point (Solidus) 1,260°C2,300 °F · Liquidus Temperature 1,340°C2,444 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 11.5 W/m·K6.6 BTU/hr·ft·°F · Specific Heat Capacity 435 J/kg·K0.1 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 13 µm/m·K7.2 µin/in·°F · Min Service Temperature -253°C-423 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 1.4 % IACS · Electrical Resistivity 1.25×10⁻⁶ Ω·m49.2 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 55 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 150 MJ/kg64,488 BTU/lb · Embodied Carbon (primary production) 12 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.
N07773-SA vs N07773-STA — frequently asked
Is N07773-STA stronger than N07773-SA?
Yes. N07773-STA has a typical yield strength of 1,030 MPa (149 ksi) against 450 MPa (65.3 ksi) for N07773-SA — about 129% more. Tensile strength is 1,275 MPa (185 ksi) vs 900 MPa (131 ksi).
Which condition does FabDigit quote by default, SA or STA?
STA is the default N07773 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, N07773-SA or N07773-STA?
N07773-SA, by a small margin. Both rate poor for machinability — 22/100 against 15/100 for N07773-STA; for welding the order is N07773-SA first (good, 60/100) then N07773-STA (fair, 40/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in N07773-SA and N07773-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.