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Refractory Metal E110 vs Zr 702C

Refractory Metal · grade comparison

Refractory Metal E110 and Zr 702C are both refractory metal grades. Zr 702C is the stronger of the two: tensile strength 450 MPa (65.3 ksi) against 390 MPa (56.6 ksi) for E110, about 15% more. In exchange, E110 is the more ductile: elongation 30% versus 16% for Zr 702C. Zr 702C conducts heat better (22 W/m·K vs 17.5 W/m·K).

E110Choose it when the part is bent, formed or impact-loaded.

Zr 702CChoose it when strength drives the design.

E110 vs Zr 702C: properties

E110Zr 702C

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

96 GPa13.9 Msi
99 GPa14.4 Msi

Bulk Modulus

100 GPa14.5 Msi
90 GPa13.1 Msi

Poisson's Ratio

0.35
0.34

Tensile Strength (Ultimate)

390 MPa56.6 ksi
450 MPa65.3 ksi

Yield Strength (0.2% offset)

255 MPa37 ksi
250 MPa36.3 ksi

Elongation at Break

30%
16%

Reduction in Area

55%
25%

Compressive Strength

390 MPa56.6 ksi
—

Shear Strength

250 MPa36.3 ksi
290 MPa42.1 ksi

Fatigue Strength (Endurance Limit)

200 MPa29 ksi
160 MPa23.2 ksi

Fracture Toughness (K_IC)

50 MPa·√m45.5 ksi·√in
55 MPa·√m50.1 ksi·√in

Charpy V-Notch Impact (RT)

45 J33.2 ft·lbf
25 J18.4 ft·lbf

Hardness, Brinell

155 HB
150 HB

Hardness, Rockwell B

84 HRB
88 HRB

Hardness, Vickers

165 HV
—

Same in both: Shear Modulus 36 GPa5.2 Msi

Physical

Density and transition temperatures.

Density

6.55 g/cm³0.24 lb/in³
6.51 g/cm³0.24 lb/in³

Melting Point (Solidus)

1,850°C3,362 °F
1,852°C3,366 °F

Liquidus Temperature

1,870°C3,398 °F
1,855°C3,371 °F

Thermal

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

Thermal Conductivity

17.5 W/m·K10.1 BTU/hr·ft·°F
22 W/m·K12.7 BTU/hr·ft·°F

Thermal Expansion (CTE, 20–100 °C)

5.8 µm/m·K3.2 µin/in·°F
5.9 µm/m·K3.3 µin/in·°F

Latent Heat of Fusion

153 J/g65.8 BTU/lb
155 J/g66.6 BTU/lb

Same in both: Specific Heat Capacity 285 J/kg·K0.07 BTU/lb·°F · Max Service Temperature (continuous) 400°C752 °F · Min Service Temperature -196°C-321 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

3.5 % IACS
4.3 % IACS

Electrical Resistivity

4.95×10⁻⁷ Ω·m19.5 µΩ·in
4×10⁻⁷ Ω·m15.7 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.15 V
-0.25 V

Corrosion Resistance

90 / 100
92 / 100

Manufacturability

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

Machinability

32 / 100
35 / 100

Machinability Rating (AISI 1212 = 100 %)

22%
32%

Weldability

70 / 100
75 / 100

Formability (cold)

70 / 100
20 / 100

Castability

20 / 100
55 / 100

Polishability

60 / 100
65 / 100

Same in both: Brazeability / Solderability 25 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

1,400 MJ/kg601,892 BTU/lb
1,250 MJ/kg537,404 BTU/lb

Embodied Carbon (primary production)

90 kg CO₂/kg
80 kg CO₂/kg

Embodied Water

900 L/kg108 gal/lb
600 L/kg71.9 gal/lb

Typical Recycled Content

15%
25%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

60 kN·m/kg
69 kN·m/kg

Specific Stiffness (E / density)

14.7 MN·m/kg
15.2 MN·m/kg

Modulus of Resilience

339 kJ/m³
316 kJ/m³

Thermal Diffusivity

9.4 mm²/s
11.9 mm²/s

Thermal Shock Resistance Index

12
17

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 scaleZr 702CE110

Manufacturing and finishing

CapabilityE110Zr 702C
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

E110 vs Zr 702C — frequently asked

Is Zr 702C stronger than E110?

Yes. Zr 702C has a typical tensile strength of 450 MPa (65.3 ksi) against 390 MPa (56.6 ksi) for E110 — about 15% more.

Which is cheaper, E110 or Zr 702C?

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, E110 or Zr 702C?

Zr 702C. Its weldability rates very good (75/100) against very good (70/100) for E110.

Ready to make it?

Upload a CAD file and FabDigit prices the part in E110 and Zr 702C 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.