Nickel Alloy Waspaloy Solution Annealed vs Waspaloy STA-HS
Nickel Alloy · Waspaloy temper comparison
Waspaloy Solution Annealed and Waspaloy STA-HS are two conditions of the same nickel alloy grade, Waspaloy: Solution Annealed versus STA-HS (high solution 1080 °C + stabilize 845 °C/4 h + age 760 °C/16 h). The chemistry is identical, so every difference below comes from the condition. Waspaloy STA-HS is the stronger of the two: yield strength 830 MPa (120 ksi) against 520 MPa (75.4 ksi) for Waspaloy Solution Annealed, about 60% more; tensile strength follows at 1,280 MPa (186 ksi) vs 930 MPa (135 ksi). In exchange, Waspaloy Solution Annealed is the more ductile: elongation 45% versus 22% for Waspaloy STA-HS, and Waspaloy STA-HS is harder (320 HB vs 250 HB). Waspaloy STA-HS runs hotter in service (815°C vs 650°C continuous). On the shop floor, Waspaloy Solution Annealed welds better (fair vs poor).
Waspaloy Solution AnnealedChoose it when the part is bent, formed or impact-loaded, or when it will be welded.
Waspaloy STA-HSChoose it when strength drives the design, or when the part sees heat.
Waspaloy Solution Annealed vs Waspaloy STA-HS: 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.
Waspaloy Solution AnnealedWaspaloy STA-HS
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, Brinell
Hardness, Rockwell C
Same in both: Elastic (Young's) Modulus 211 GPa30.6 Msi · Shear Modulus 81 GPa11.7 Msi · Bulk Modulus 176 GPa25.5 Msi · Poisson's Ratio 0.3 · Shear Strength 620 MPa89.9 ksi · Fracture Toughness (K_IC) 110 MPa·√m100 ksi·√in · Charpy V-Notch Impact (RT) 65 J47.9 ft·lbf · Hardness, Vickers 262 HV
Physical
Density and transition temperatures.
Same in both: Density 8.19 g/cm³0.3 lb/in³ · Melting Point (Solidus) 1,330°C2,426 °F · Liquidus Temperature 1,360°C2,480 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 10.7 W/m·K6.2 BTU/hr·ft·°F · Specific Heat Capacity 480 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12.2 µm/m·K6.8 µin/in·°F · Latent Heat of Fusion 290 J/g125 BTU/lb · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 1.4 % IACS · Electrical Resistivity 1.24×10⁻⁶ Ω·m48.8 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V · Corrosion Resistance 74 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Same in both: Machinability Rating (AISI 1212 = 100 %) 11% · Formability (cold) 45 / 100 · Castability 40 / 100 · Brazeability / Solderability 50 / 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) 15.5 kg CO₂/kg · Embodied Water 320 L/kg38.3 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.
Waspaloy Solution Annealed vs Waspaloy STA-HS — frequently asked
Is Waspaloy STA-HS stronger than Waspaloy Solution Annealed?
Yes. Waspaloy STA-HS has a typical yield strength of 830 MPa (120 ksi) against 520 MPa (75.4 ksi) for Waspaloy Solution Annealed — about 60% more. Tensile strength is 1,280 MPa (186 ksi) vs 930 MPa (135 ksi).
Which condition does FabDigit quote by default, Solution Annealed or STA-HS?
Solution Annealed is the default Waspaloy 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, Waspaloy Solution Annealed or Waspaloy STA-HS?
Waspaloy Solution Annealed. Its machinability rates poor (18/100) against not recommended (12/100) for Waspaloy STA-HS; for welding the order is Waspaloy Solution Annealed first (fair, 35/100) then Waspaloy STA-HS (poor, 20/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Waspaloy Solution Annealed and Waspaloy STA-HS 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.