Nickel Alloy Inconel 752 EQ+A vs Inconel 752-STA
Nickel Alloy · Inconel 752 temper comparison
Inconel 752 EQ+A and Inconel 752-STA are two conditions of the same nickel alloy grade, Inconel 752: EQ+A (equalized 885 °C/24 h + aged 704 °C/20 h) versus STA (solution treated and aged). The chemistry is identical, so every difference below comes from the condition. Inconel 752-STA is the stronger of the two: yield strength 820 MPa (119 ksi) against 730 MPa (106 ksi) for Inconel 752 EQ+A, about 12% more; tensile strength follows at 1,210 MPa (175 ksi) vs 1,120 MPa (162 ksi). In exchange, Inconel 752 EQ+A is the more ductile: elongation 25% versus 22% for Inconel 752-STA, and Inconel 752-STA is harder (340 HB vs 320 HB).
Inconel 752 EQ+AChoose it when the part is bent, formed or impact-loaded.
Inconel 752-STAChoose it when strength drives the design.
Inconel 752 EQ+A vs Inconel 752-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.
Inconel 752 EQ+AInconel 752-STA
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)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 214 GPa31 Msi · Shear Modulus 82 GPa11.9 Msi · Bulk Modulus 175 GPa25.4 Msi · Poisson's Ratio 0.3
Physical
Density and transition temperatures.
Same in both: Density 8.28 g/cm³0.3 lb/in³ · Melting Point (Solidus) 1,393°C2,539 °F · Liquidus Temperature 1,427°C2,601 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 12 W/m·K6.9 BTU/hr·ft·°F · Specific Heat Capacity 431 J/kg·K0.1 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12.6 µm/m·K7 µin/in·°F · Latent Heat of Fusion 285 J/g123 BTU/lb · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 1.4 % IACS · Electrical Resistivity 1.22×10⁻⁶ Ω·m48 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V · Corrosion Resistance 70 / 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) 145 MJ/kg62,339 BTU/lb · Embodied Carbon (primary production) 11.5 kg CO₂/kg · Embodied Water 160 L/kg19.2 gal/lb · Typical Recycled Content 40%
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.
Inconel 752 EQ+A vs Inconel 752-STA — frequently asked
Is Inconel 752-STA stronger than Inconel 752 EQ+A?
Yes. Inconel 752-STA has a typical yield strength of 820 MPa (119 ksi) against 730 MPa (106 ksi) for Inconel 752 EQ+A — about 12% more. Tensile strength is 1,210 MPa (175 ksi) vs 1,120 MPa (162 ksi).
Which condition does FabDigit quote by default, EQ+A or STA?
STA is the default Inconel 752 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, Inconel 752 EQ+A or Inconel 752-STA?
Inconel 752 EQ+A. Its weldability rates fair (35/100) against poor (30/100) for Inconel 752-STA.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Inconel 752 EQ+A and Inconel 752-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.