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Nickel Alloy Alloy 22 vs Alloy 242

Nickel Alloy · grade comparison

Nickel Alloy Alloy 22 and Alloy 242 are both nickel alloy grades. Alloy 22 is the stronger of the two: yield strength 400 MPa (58 ksi) against 375 MPa (54.4 ksi) for Alloy 242, about 7% more. Alloy 22 is the more ductile: elongation 62% versus 48% for Alloy 242, and Alloy 242 is harder (215 HB vs 200 HB). Alloy 22 is lighter (8.69 g/cm³ vs 9.05 g/cm³ for Alloy 242) and Alloy 242 is stiffer (217 GPa vs 206 GPa). On the shop floor, Alloy 22 welds better (excellent vs good).

Alloy 22Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.

Alloy 242Choose it when the part sees heat.

Alloy 22 vs Alloy 242: properties

Alloy 22Alloy 242

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

206 GPa29.9 Msi
217 GPa31.5 Msi

Shear Modulus

80 GPa11.6 Msi
83 GPa12 Msi

Bulk Modulus

155 GPa22.5 Msi
190 GPa27.6 Msi

Poisson's Ratio

0.28
0.31

Tensile Strength (Ultimate)

800 MPa116 ksi
805 MPa117 ksi

Yield Strength (0.2% offset)

400 MPa58 ksi
375 MPa54.4 ksi

Elongation at Break

62%
48%

Reduction in Area

65%
55%

Compressive Strength

400 MPa58 ksi
—

Charpy V-Notch Impact (RT)

250 J184 ft·lbf
120 J88.5 ft·lbf

Hardness, Brinell

200 HB
215 HB

Hardness, Rockwell B

88 HRB
96 HRB

Hardness, Vickers

210 HV
—

Same in both: Shear Strength 520 MPa75.4 ksi · Fatigue Strength (Endurance Limit) 340 MPa49.3 ksi

Physical

Density and transition temperatures.

Density

8.69 g/cm³0.31 lb/in³
9.05 g/cm³0.33 lb/in³

Melting Point (Solidus)

1,357°C2,475 °F
1,320°C2,408 °F

Liquidus Temperature

1,399°C2,550 °F
1,353°C2,467 °F

Thermal

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

Thermal Conductivity

10.1 W/m·K5.8 BTU/hr·ft·°F
9 W/m·K5.2 BTU/hr·ft·°F

Specific Heat Capacity

414 J/kg·K0.1 BTU/lb·°F
398 J/kg·K0.1 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

12.4 µm/m·K6.9 µin/in·°F
11.2 µm/m·K6.2 µin/in·°F

Latent Heat of Fusion

285 J/g123 BTU/lb
—

Max Service Temperature (continuous)

675°C1,247 °F
815°C1,499 °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

1.14×10⁻⁶ Ω·m44.9 µΩ·in
1.26×10⁻⁶ Ω·m49.6 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.08 V
-0.1 V

Corrosion Resistance

93 / 100
80 / 100

Manufacturability

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

Machinability

15 / 100
18 / 100

Weldability

85 / 100
60 / 100

Formability (cold)

70 / 100
60 / 100

Brazeability / Solderability

50 / 100
55 / 100

Polishability

75 / 100
70 / 100

Same in both: Machinability Rating (AISI 1212 = 100 %) 12% · Castability 35 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

145 MJ/kg62,339 BTU/lb
170 MJ/kg73,087 BTU/lb

Embodied Carbon (primary production)

12 kg CO₂/kg
14 kg CO₂/kg

Embodied Water

260 L/kg31.2 gal/lb
160 L/kg19.2 gal/lb

Typical Recycled Content

40%
30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

92 kN·m/kg
89 kN·m/kg

Specific Stiffness (E / density)

23.7 MN·m/kg
24 MN·m/kg

Modulus of Resilience

388 kJ/m³
324 kJ/m³

Thermal Diffusivity

2.8 mm²/s
2.5 mm²/s

Same in both: Thermal Shock Resistance Index 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 scaleAlloy 22Alloy 242

Manufacturing and finishing

CapabilityAlloy 22Alloy 242
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

Both take the same 3 finishes: Gold Plating, Plasma Spray, Silver Plating.

Alloy 22 vs Alloy 242 — frequently asked

Is Alloy 22 stronger than Alloy 242?

Yes. Alloy 22 has a typical yield strength of 400 MPa (58 ksi) against 375 MPa (54.4 ksi) for Alloy 242 — about 7% more. Tensile strength is 800 MPa (116 ksi) vs 805 MPa (117 ksi).

Which is cheaper, Alloy 22 or Alloy 242?

Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.

Which welds better, Alloy 22 or Alloy 242?

Alloy 22. Its weldability rates excellent (85/100) against good (60/100) for Alloy 242.

Ready to make it?

Upload a CAD file and FabDigit prices the part in Alloy 22 and Alloy 242 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.