Nickel Alloy Hastelloy C276 As Welded vs Hastelloy C276 Stress Relieved
Nickel Alloy · Hastelloy C276 temper comparison
Hastelloy C276 As Welded and Hastelloy C276 Stress Relieved are two conditions of the same nickel alloy grade, Hastelloy C276: As Welded (as-welded deposit) versus Stress Relieved. The chemistry is identical, so every difference below comes from the condition. Hastelloy C276 Stress Relieved is the stronger of the two: yield strength 740 MPa (107 ksi) against 490 MPa (71.1 ksi) for Hastelloy C276 As Welded, about 51% more; tensile strength follows at 970 MPa (141 ksi) vs 760 MPa (110 ksi). In exchange, Hastelloy C276 As Welded is the more ductile: elongation 40% versus 28% for Hastelloy C276 Stress Relieved, and Hastelloy C276 Stress Relieved is harder (272 HB vs 192 HB). Hastelloy C276 As Welded runs hotter in service (650°C vs 480°C continuous).
Hastelloy C276 As WeldedChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Hastelloy C276 Stress RelievedChoose it when strength drives the design.
Hastelloy C276 As Welded vs Hastelloy C276 Stress Relieved: 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.
Hastelloy C276 As WeldedHastelloy C276 Stress Relieved
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 B
Same in both: Elastic (Young's) Modulus 205 GPa29.7 Msi · Shear Modulus 79 GPa11.5 Msi · Bulk Modulus 180 GPa26.1 Msi · Poisson's Ratio 0.31
Physical
Density and transition temperatures.
Same in both: Density 8.89 g/cm³0.32 lb/in³ · Melting Point (Solidus) 1,323°C2,413 °F · Liquidus Temperature 1,371°C2,500 °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 427 J/kg·K0.1 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.2 µm/m·K6.2 µin/in·°F · Latent Heat of Fusion 290 J/g125 BTU/lb · Min Service Temperature -196°C-321 °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) -0.05 V
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 40 / 100 · Brazeability / Solderability 65 / 100 · Polishability 75 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 210 MJ/kg90,284 BTU/lb · Embodied Carbon (primary production) 14 kg CO₂/kg · 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.
Hastelloy C276 As Welded vs Hastelloy C276 Stress Relieved — frequently asked
Is Hastelloy C276 Stress Relieved stronger than Hastelloy C276 As Welded?
Yes. Hastelloy C276 Stress Relieved has a typical yield strength of 740 MPa (107 ksi) against 490 MPa (71.1 ksi) for Hastelloy C276 As Welded — about 51% more. Tensile strength is 970 MPa (141 ksi) vs 760 MPa (110 ksi).
Which condition does FabDigit quote by default, As Welded or Stress Relieved?
Solution Annealed is the default Hastelloy C276 condition in the FabDigit quote flow (neither As Welded nor Stress Relieved). 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, Hastelloy C276 As Welded or Hastelloy C276 Stress Relieved?
Hastelloy C276 Stress Relieved, by a small margin. Both rate poor for machinability — 22/100 against 15/100 for Hastelloy C276 As Welded; for welding the order is Hastelloy C276 As Welded first (excellent, 85/100) then Hastelloy C276 Stress Relieved (very good, 78/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Hastelloy C276 As Welded and Hastelloy C276 Stress Relieved 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.