Nickel Alloy ERNiFeCr-2-HTA vs ERNiFeCr-2-STA
Nickel Alloy · ERNiFeCr-2 temper comparison
ERNiFeCr-2-HTA and ERNiFeCr-2-STA are two conditions of the same nickel alloy grade, ERNiFeCr-2: HTA (high-temperature solution 1065 °C + double age) versus STA (solution treated and aged). The chemistry is identical, so every difference below comes from the condition. ERNiFeCr-2-STA is the stronger of the two: yield strength 1,030 MPa (149 ksi) against 960 MPa (139 ksi) for ERNiFeCr-2-HTA, about 7% more. In exchange, ERNiFeCr-2-HTA is the more ductile: elongation 15% versus 12% for ERNiFeCr-2-STA, and ERNiFeCr-2-HTA is harder (360 HB vs 240 HB). On the shop floor, ERNiFeCr-2-STA welds better (good vs fair).
ERNiFeCr-2-HTAChoose it when the part is bent, formed or impact-loaded.
ERNiFeCr-2-STAChoose it when strength drives the design, or when it will be welded.
ERNiFeCr-2-HTA vs ERNiFeCr-2-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)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 204 GPa29.6 Msi · Shear Modulus 77 GPa11.2 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29
Physical
Density and transition temperatures.
Same in both: Density 8.19 g/cm³0.3 lb/in³ · Melting Point (Solidus) 1,260°C2,300 °F · Liquidus Temperature 1,336°C2,437 °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 435 J/kg·K0.1 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 13 µm/m·K7.2 µin/in·°F · Latent Heat of Fusion 210 J/g90.3 BTU/lb · Min Service Temperature -253°C-423 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.15 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Machinability 20 / 100 · Brazeability / Solderability 55 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 165 MJ/kg70,937 BTU/lb · Embodied Carbon (primary production) 12 kg CO₂/kg · Embodied Water 400 L/kg47.9 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.
ERNiFeCr-2-HTA vs ERNiFeCr-2-STA — frequently asked
Is ERNiFeCr-2-STA stronger than ERNiFeCr-2-HTA?
Yes. ERNiFeCr-2-STA has a typical yield strength of 1,030 MPa (149 ksi) against 960 MPa (139 ksi) for ERNiFeCr-2-HTA — about 7% more. Tensile strength is 1,240 MPa (180 ksi) vs 1,180 MPa (171 ksi).
Which condition does FabDigit quote by default, HTA or STA?
AW is the default ERNiFeCr-2 condition in the FabDigit quote flow (neither HTA nor STA). 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, ERNiFeCr-2-HTA or ERNiFeCr-2-STA?
ERNiFeCr-2-STA. Its weldability rates good (60/100) against fair (35/100) for ERNiFeCr-2-HTA.
Ready to make it?
Upload a CAD file and FabDigit prices the part in ERNiFeCr-2-HTA and ERNiFeCr-2-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.