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Nickel Alloy Hastelloy X vs N06250

Nickel Alloy · grade comparison

Nickel Alloy Hastelloy X and N06250 are both nickel alloy grades. Both yield at about 360 MPa — strength does not separate them. N06250 is the more ductile: elongation 58% versus 43% for Hastelloy X, and Hastelloy X is harder (195 HB vs 180 HB). Hastelloy X is lighter (8.22 g/cm³ vs 8.7 g/cm³ for N06250) and Hastelloy X runs hotter in service (1,150°C vs 650°C continuous). On the shop floor, Hastelloy X sits in a lower cost tier (premium, $$$) than N06250 (high, $$$$).

Hastelloy XChoose it when weight is the constraint, or when the part sees heat.

N06250Choose it when the part is bent, formed or impact-loaded.

Hastelloy X vs N06250: properties

Hastelloy XN06250

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

205 GPa29.7 Msi
206 GPa29.9 Msi

Bulk Modulus

190 GPa27.6 Msi
180 GPa26.1 Msi

Poisson's Ratio

0.32
0.31

Tensile Strength (Ultimate)

755 MPa110 ksi
760 MPa110 ksi

Elongation at Break

43%
58%

Reduction in Area

55%
65%

Compressive Strength

370 MPa53.7 ksi
360 MPa52.2 ksi

Fatigue Strength (Endurance Limit)

300 MPa43.5 ksi
320 MPa46.4 ksi

Fracture Toughness (K_IC)

120 MPa·√m109 ksi·√in
—

Charpy V-Notch Impact (RT)

100 J73.8 ft·lbf
200 J148 ft·lbf

Hardness, Brinell

195 HB
180 HB

Hardness, Rockwell B

90 HRB
88 HRB

Hardness, Vickers

205 HV
190 HV

Hardness, Rockwell C

—
9 HRC

Same in both: Shear Modulus 79 GPa11.5 Msi · Yield Strength (0.2% offset) 360 MPa52.2 ksi · Shear Strength 490 MPa71.1 ksi

Physical

Density and transition temperatures.

Density

8.22 g/cm³0.3 lb/in³
8.7 g/cm³0.31 lb/in³

Melting Point (Solidus)

1,260°C2,300 °F
1,325°C2,417 °F

Liquidus Temperature

1,355°C2,471 °F
1,370°C2,498 °F

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

9.1 W/m·K5.3 BTU/hr·ft·°F
10 W/m·K5.8 BTU/hr·ft·°F

Specific Heat Capacity

486 J/kg·K0.12 BTU/lb·°F
425 J/kg·K0.1 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

13.9 µm/m·K7.7 µin/in·°F
11.6 µm/m·K6.4 µin/in·°F

Latent Heat of Fusion

290 J/g125 BTU/lb
—

Max Service Temperature (continuous)

1,150°C2,102 °F
650°C1,202 °F

Same in both: Min Service Temperature -196°C-321 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

1.5 % IACS
1.4 % IACS

Electrical Resistivity

1.18×10⁻⁶ Ω·m46.5 µΩ·in
1.25×10⁻⁶ Ω·m49.2 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

76 / 100
92 / 100

Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Castability

55 / 100
35 / 100

Brazeability / Solderability

80 / 100
55 / 100

Polishability

70 / 100
75 / 100

Same in both: Machinability 18 / 100 · Machinability Rating (AISI 1212 = 100 %) 12% · Weldability 85 / 100 · Formability (cold) 70 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

215 MJ/kg92,433 BTU/lb
180 MJ/kg77,386 BTU/lb

Embodied Carbon (primary production)

13.5 kg CO₂/kg
14 kg CO₂/kg

Embodied Water

520 L/kg62.3 gal/lb
350 L/kg41.9 gal/lb

Typical Recycled Content

35%
45%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

92 kN·m/kg
87 kN·m/kg

Specific Stiffness (E / density)

24.9 MN·m/kg
23.7 MN·m/kg

Modulus of Resilience

316 kJ/m³
315 kJ/m³

Thermal Diffusivity

2.3 mm²/s
2.7 mm²/s

Thermal Shock Resistance Index

2
3

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.

2005001,0006.577.588.59Density (g/cm³)Yield strength (MPa) — log scaleHastelloy XN06250

Manufacturing and finishing

CapabilityHastelloy XN06250
CNC machiningYes—
Sheet metalYes—
3D printingYes—
Default conditionSolution Annealed—
Relative cost$$$ Premium$$$$ High
Min. machined wall1.5 mm—
Best machined surfaceRa 1.6 µm—
ElectropolishingYes—
HVOF CoatingYes—

They share 3 finishes: Gold Plating, Plasma Spray, Silver Plating.

Hastelloy X vs N06250 — frequently asked

What is the difference between Hastelloy X and N06250?

Nickel Alloy Hastelloy X and N06250 are both nickel alloy grades. Both yield at about 360 MPa — strength does not separate them. N06250 is the more ductile: elongation 58% versus 43% for Hastelloy X, and Hastelloy X is harder (195 HB vs 180 HB).

Which is cheaper, Hastelloy X or N06250?

Hastelloy X is the lower-cost material: it sits in the premium tier ($$$) while N06250 is high ($$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.

When should I choose Hastelloy X over N06250?

Pick Hastelloy X when weight is the constraint, or when the part sees heat. Pick N06250 when the part is bent, formed or impact-loaded.

Ready to make it?

Upload a CAD file and FabDigit prices the part in Hastelloy X and N06250 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.