Nickel Alloy Alumel-ANN vs Alumel TC-STD
Nickel Alloy · Alumel temper comparison
Alumel-ANN and Alumel TC-STD are two conditions of the same nickel alloy grade, Alumel: ANN (annealed) versus TC-STD (thermocouple grade, standard limits of error). The chemistry is identical, so every difference below comes from the condition. Both yield at about 230 MPa — the mechanical properties are the same, and the difference is in how the stock is processed and what it is certified to (annealed versus thermocouple grade, standard limits of error). Alumel TC-STD runs hotter in service (1,260°C vs 1,100°C continuous).
Alumel TC-STDChoose it when the part sees heat.
Alumel-ANN vs Alumel TC-STD: 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.
Same in both: Elastic (Young's) Modulus 186 GPa27 Msi · Shear Modulus 72 GPa10.4 Msi · Bulk Modulus 155 GPa22.5 Msi · Poisson's Ratio 0.3 · Tensile Strength (Ultimate) 570 MPa82.7 ksi · Yield Strength (0.2% offset) 230 MPa33.4 ksi · Elongation at Break 32% · Shear Strength 380 MPa55.1 ksi · Fatigue Strength (Endurance Limit) 250 MPa36.3 ksi · Hardness, Brinell 135 HB · Hardness, Rockwell B 75 HRB · Hardness, Vickers 150 HV
Physical
Density and transition temperatures.
Same in both: Density 8.6 g/cm³0.31 lb/in³ · Melting Point (Solidus) 1,399°C2,550 °F · Liquidus Temperature 1,430°C2,606 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 29.7 W/m·K17.2 BTU/hr·ft·°F · Specific Heat Capacity 523 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12.9 µm/m·K7.2 µin/in·°F · Latent Heat of Fusion 290 J/g125 BTU/lb · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 5.9 % IACS · Electrical Resistivity 2.94×10⁻⁷ Ω·m11.6 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.25 V · Corrosion Resistance 62 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Weldability
Formability (cold)
Same in both: Machinability 30 / 100 · Machinability Rating (AISI 1212 = 100 %) 20% · Brazeability / Solderability 55 / 100 · Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 160 MJ/kg68,788 BTU/lb · Embodied Carbon (primary production) 11.5 kg CO₂/kg · Embodied Water 500 L/kg59.9 gal/lb · Typical Recycled Content 15%
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.
Alumel-ANN vs Alumel TC-STD — frequently asked
What is the difference between Alumel-ANN and Alumel TC-STD?
Alumel-ANN and Alumel TC-STD are two conditions of the same nickel alloy grade, Alumel: ANN (annealed) versus TC-STD (thermocouple grade, standard limits of error). The chemistry is identical, so every difference below comes from the condition. Both yield at about 230 MPa — the mechanical properties are the same, and the difference is in how the stock is processed and what it is certified to (annealed versus thermocouple grade, standard limits of error).
Which condition does FabDigit quote by default, ANN or TC-STD?
ANN is the default Alumel 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, Alumel-ANN or Alumel TC-STD?
Alumel-ANN. Its weldability rates good (60/100) against good (55/100) for Alumel TC-STD.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Alumel-ANN and Alumel TC-STD 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.