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Refractory Metal 50Cr-50Ni vs 50Cr-50Ni-Cb

Refractory Metal · grade comparison

Refractory Metal 50Cr-50Ni and 50Cr-50Ni-Cb are both refractory metal grades. 50Cr-50Ni-Cb is the stronger of the two: yield strength 390 MPa (56.6 ksi) against 340 MPa (49.3 ksi) for 50Cr-50Ni, about 15% more; tensile strength follows at 590 MPa (85.6 ksi) vs 550 MPa (79.8 ksi). 50Cr-50Ni is harder — 230 HB against 210 HB for 50Cr-50Ni-Cb — which matters for wear surfaces and threads. 50Cr-50Ni is stiffer (200 GPa vs 190 GPa).

50Cr-50NiChoose it when surface hardness matters.

50Cr-50Ni-CbChoose it when strength drives the design.

50Cr-50Ni vs 50Cr-50Ni-Cb: properties

50Cr-50Ni50Cr-50Ni-Cb

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

200 GPa29 Msi
190 GPa27.6 Msi

Shear Modulus

78 GPa11.3 Msi
74 GPa10.7 Msi

Bulk Modulus

170 GPa24.7 Msi
160 GPa23.2 Msi

Tensile Strength (Ultimate)

550 MPa79.8 ksi
590 MPa85.6 ksi

Yield Strength (0.2% offset)

340 MPa49.3 ksi
390 MPa56.6 ksi

Compressive Strength

900 MPa131 ksi
700 MPa102 ksi

Shear Strength

330 MPa47.9 ksi
420 MPa60.9 ksi

Fatigue Strength (Endurance Limit)

190 MPa27.6 ksi
220 MPa31.9 ksi

Fracture Toughness (K_IC)

30 MPa·√m27.3 ksi·√in
35 MPa·√m31.9 ksi·√in

Charpy V-Notch Impact (RT)

6 J4.4 ft·lbf
9 J6.6 ft·lbf

Hardness, Brinell

230 HB
210 HB

Hardness, Rockwell B

98 HRB
94 HRB

Hardness, Rockwell C

20 HRC
16 HRC

Hardness, Vickers

242 HV
220 HV

Same in both: Poisson's Ratio 0.3 · Elongation at Break 8% · Reduction in Area 8%

Physical

Density and transition temperatures.

Density

7.85 g/cm³0.28 lb/in³
7.8 g/cm³0.28 lb/in³

Melting Point (Solidus)

1,390°C2,534 °F
1,370°C2,498 °F

Same in both: Liquidus Temperature 1,430°C2,606 °F

Thermal

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

Latent Heat of Fusion

330 J/g142 BTU/lb
290 J/g125 BTU/lb

Min Service Temperature

—
0°C32 °F

Same in both: Thermal Conductivity 14 W/m·K8.1 BTU/hr·ft·°F · Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.5 µm/m·K6.4 µin/in·°F · Max Service Temperature (continuous) 1,100°C2,012 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

1.7 % IACS
1.6 % IACS

Electrical Resistivity

1×10⁻⁶ Ω·m39.4 µΩ·in
1.05×10⁻⁶ Ω·m41.3 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

85 / 100
88 / 100

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

15 / 100
12 / 100

Weldability

20 / 100
25 / 100

Formability (cold)

5 / 100
8 / 100

Brazeability / Solderability

30 / 100
40 / 100

Same in both: Machinability Rating (AISI 1212 = 100 %) 8% · Castability 55 / 100 · Polishability 45 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

100 MJ/kg42,992 BTU/lb
135 MJ/kg58,040 BTU/lb

Embodied Carbon (primary production)

9.5 kg CO₂/kg
10.5 kg CO₂/kg

Embodied Water

300 L/kg35.9 gal/lb
220 L/kg26.4 gal/lb

Typical Recycled Content

20%
30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

70 kN·m/kg
76 kN·m/kg

Specific Stiffness (E / density)

25.5 MN·m/kg
24.4 MN·m/kg

Modulus of Resilience

289 kJ/m³
400 kJ/m³

Thermal Shock Resistance Index

3
4

Same in both: Thermal Diffusivity 3.9 mm²/s

Strength versus weight

Yield strength against density for every refractory metal grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.

1502003005007001,0001,5005101520Density (g/cm³)Yield strength (MPa) — log scale50Cr-50Ni50Cr-50Ni-Cb

Manufacturing and finishing

Capability50Cr-50Ni50Cr-50Ni-Cb
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

50Cr-50Ni vs 50Cr-50Ni-Cb — frequently asked

Is 50Cr-50Ni-Cb stronger than 50Cr-50Ni?

Yes. 50Cr-50Ni-Cb has a typical yield strength of 390 MPa (56.6 ksi) against 340 MPa (49.3 ksi) for 50Cr-50Ni — about 15% more. Tensile strength is 590 MPa (85.6 ksi) vs 550 MPa (79.8 ksi).

Which is cheaper, 50Cr-50Ni or 50Cr-50Ni-Cb?

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, 50Cr-50Ni or 50Cr-50Ni-Cb?

50Cr-50Ni-Cb. Its weldability rates poor (25/100) against poor (20/100) for 50Cr-50Ni.

Ready to make it?

Upload a CAD file and FabDigit prices the part in 50Cr-50Ni and 50Cr-50Ni-Cb 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.