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Refractory Metal 60Cr-40Ni vs Cr99.90

Refractory Metal · grade comparison

Refractory Metal 60Cr-40Ni and Cr99.90 are both refractory metal grades. 60Cr-40Ni is the stronger of the two: yield strength 310 MPa (45 ksi) against 260 MPa (37.7 ksi) for Cr99.90, about 19% more; tensile strength follows at 415 MPa (60.2 ksi) vs 300 MPa (43.5 ksi). 60Cr-40Ni is the more ductile: elongation 2% versus 0% for Cr99.90, and Cr99.90 is harder (400 HV vs 230 HV). Cr99.90 is lighter (7.19 g/cm³ vs 7.7 g/cm³ for 60Cr-40Ni) and Cr99.90 is stiffer (279 GPa vs 225 GPa). On the shop floor, 60Cr-40Ni welds better (poor vs not recommended).

60Cr-40NiChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.

Cr99.90Choose it when weight is the constraint.

60Cr-40Ni vs Cr99.90: properties

60Cr-40NiCr99.90

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

225 GPa32.6 Msi
279 GPa40.5 Msi

Shear Modulus

88 GPa12.8 Msi
115 GPa16.7 Msi

Bulk Modulus

175 GPa25.4 Msi
160 GPa23.2 Msi

Poisson's Ratio

0.28
0.21

Tensile Strength (Ultimate)

415 MPa60.2 ksi
300 MPa43.5 ksi

Yield Strength (0.2% offset)

310 MPa45 ksi
260 MPa37.7 ksi

Elongation at Break

2%
0%

Reduction in Area

2%
—

Compressive Strength

850 MPa123 ksi
900 MPa131 ksi

Shear Strength

290 MPa42.1 ksi
—

Fatigue Strength (Endurance Limit)

150 MPa21.8 ksi
—

Fracture Toughness (K_IC)

25 MPa·√m22.8 ksi·√in
15 MPa·√m13.7 ksi·√in

Charpy V-Notch Impact (RT)

5 J3.7 ft·lbf
2 J1.5 ft·lbf

Hardness, Brinell

220 HB
—

Hardness, Rockwell B

96 HRB
—

Hardness, Rockwell C

19 HRC
—

Hardness, Vickers

230 HV
400 HV

Physical

Density and transition temperatures.

Density

7.7 g/cm³0.28 lb/in³
7.19 g/cm³0.26 lb/in³

Melting Point (Solidus)

1,350°C2,462 °F
1,907°C3,465 °F

Liquidus Temperature

1,450°C2,642 °F
1,907°C3,465 °F

Thermal

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

Thermal Conductivity

15 W/m·K8.7 BTU/hr·ft·°F
93.9 W/m·K54.3 BTU/hr·ft·°F

Specific Heat Capacity

460 J/kg·K0.11 BTU/lb·°F
449 J/kg·K0.11 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

11.5 µm/m·K6.4 µin/in·°F
4.9 µm/m·K2.7 µin/in·°F

Max Service Temperature (continuous)

1,150°C2,102 °F
900°C1,652 °F

Min Service Temperature

20°C68 °F
—

Latent Heat of Fusion

—
404 J/g174 BTU/lb

Electrical

Conductivity and insulation.

Electrical Conductivity

1.5 % IACS
13.8 % IACS

Electrical Resistivity

1.15×10⁻⁶ Ω·m45.3 µΩ·in
1.25×10⁻⁷ Ω·m4.92 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.15 V
-0.3 V

Corrosion Resistance

82 / 100
85 / 100

Manufacturability

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

Machinability

12 / 100
5 / 100

Machinability Rating (AISI 1212 = 100 %)

10%
—

Weldability

20 / 100
8 / 100

Castability

45 / 100
15 / 100

Brazeability / Solderability

35 / 100
40 / 100

Polishability

55 / 100
80 / 100

Same in both: Formability (cold) 3 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

95 MJ/kg40,843 BTU/lb
190 MJ/kg81,685 BTU/lb

Embodied Carbon (primary production)

8 kg CO₂/kg
16 kg CO₂/kg

Embodied Water

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

Typical Recycled Content

15%
2%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

54 kN·m/kg
42 kN·m/kg

Specific Stiffness (E / density)

29.2 MN·m/kg
38.8 MN·m/kg

Modulus of Resilience

214 kJ/m³
121 kJ/m³

Thermal Diffusivity

4.2 mm²/s
29.1 mm²/s

Thermal Shock Resistance Index

2
21

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 scale60Cr-40NiCr99.90

Manufacturing and finishing

Capability60Cr-40NiCr99.90
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

60Cr-40Ni vs Cr99.90 — frequently asked

Is 60Cr-40Ni stronger than Cr99.90?

Yes. 60Cr-40Ni has a typical yield strength of 310 MPa (45 ksi) against 260 MPa (37.7 ksi) for Cr99.90 — about 19% more. Tensile strength is 415 MPa (60.2 ksi) vs 300 MPa (43.5 ksi).

Which is cheaper, 60Cr-40Ni or Cr99.90?

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 is easier to machine, 60Cr-40Ni or Cr99.90?

60Cr-40Ni, by a small margin. Both rate not recommended for machinability — 12/100 against 5/100 for Cr99.90; for welding the order is 60Cr-40Ni first (poor, 20/100) then Cr99.90 (not recommended, 8/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in 60Cr-40Ni and Cr99.90 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.