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Refractory Metal Mo-30W vs Mo (Grade 360)

Refractory Metal · grade comparison

Refractory Metal Mo-30W and Mo (Grade 360) are both refractory metal grades. Mo-30W is the stronger of the two: yield strength 620 MPa (89.9 ksi) against 585 MPa (84.8 ksi) for Mo (Grade 360), about 6% more. Mo-30W is the more ductile: elongation 18% versus 15% for Mo (Grade 360), and Mo-30W is harder (23 HRC vs 20 HRC). Mo (Grade 360) is lighter (10.22 g/cm³ vs 11.9 g/cm³ for Mo-30W) and Mo-30W is stiffer (340 GPa vs 320 GPa). On the shop floor, Mo (Grade 360) machines more easily (fair vs poor).

Mo-30WChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.

Mo (Grade 360)Choose it when weight is the constraint, or when the part sees heat.

Mo-30W vs Mo (Grade 360): properties

Mo-30WMo (Grade 360)

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

340 GPa49.3 Msi
320 GPa46.4 Msi

Shear Modulus

131 GPa19 Msi
125 GPa18.1 Msi

Bulk Modulus

285 GPa41.3 Msi
261 GPa37.9 Msi

Poisson's Ratio

0.3
0.32

Yield Strength (0.2% offset)

620 MPa89.9 ksi
585 MPa84.8 ksi

Elongation at Break

18%
15%

Reduction in Area

30%
45%

Compressive Strength

650 MPa94.3 ksi
620 MPa89.9 ksi

Fatigue Strength (Endurance Limit)

300 MPa43.5 ksi
290 MPa42.1 ksi

Fracture Toughness (K_IC)

15 MPa·√m13.7 ksi·√in
20 MPa·√m18.2 ksi·√in

Charpy V-Notch Impact (RT)

6 J4.4 ft·lbf
10 J7.4 ft·lbf

Hardness, Rockwell C

23 HRC
20 HRC

Hardness, Vickers

255 HV
230 HV

Hardness, Brinell

—
220 HB

Hardness, Rockwell B

—
98 HRB

Same in both: Tensile Strength (Ultimate) 760 MPa110 ksi · Shear Strength 450 MPa65.3 ksi

Physical

Density and transition temperatures.

Density

11.9 g/cm³0.43 lb/in³
10.22 g/cm³0.37 lb/in³

Melting Point (Solidus)

2,740°C4,964 °F
2,623°C4,753 °F

Liquidus Temperature

2,800°C5,072 °F
2,623°C4,753 °F

Thermal

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

Thermal Conductivity

100 W/m·K57.8 BTU/hr·ft·°F
138 W/m·K79.7 BTU/hr·ft·°F

Specific Heat Capacity

215 J/kg·K0.05 BTU/lb·°F
250 J/kg·K0.06 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

5 µm/m·K2.8 µin/in·°F
5.2 µm/m·K2.9 µin/in·°F

Latent Heat of Fusion

355 J/g153 BTU/lb
390 J/g168 BTU/lb

Max Service Temperature (continuous)

500°C932 °F
1,100°C2,012 °F

Min Service Temperature

0°C32 °F
-20°C-4 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

13 % IACS
32 % IACS

Electrical Resistivity

1.3×10⁻⁷ Ω·m5.12 µΩ·in
5.4×10⁻⁸ Ω·m2.13 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Same in both: Galvanic Potential (seawater, vs SCE) -0.2 V · Corrosion Resistance 55 / 100

Manufacturability

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

Machinability

30 / 100
40 / 100

Machinability Rating (AISI 1212 = 100 %)

30%
40%

Formability (cold)

25 / 100
35 / 100

Castability

15 / 100
—

Brazeability / Solderability

60 / 100
65 / 100

Same in both: Weldability 20 / 100 · Polishability 70 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

205 MJ/kg88,134 BTU/lb
380 MJ/kg163,371 BTU/lb

Embodied Carbon (primary production)

13 kg CO₂/kg
28 kg CO₂/kg

Embodied Water

220 L/kg26.4 gal/lb
450 L/kg53.9 gal/lb

Typical Recycled Content

20%
30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

64 kN·m/kg
74 kN·m/kg

Specific Stiffness (E / density)

28.6 MN·m/kg
31.3 MN·m/kg

Modulus of Resilience

565 kJ/m³
535 kJ/m³

Thermal Diffusivity

39.1 mm²/s
54 mm²/s

Thermal Shock Resistance Index

45
63

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 scaleMo-30WMo (Grade 360)

Manufacturing and finishing

CapabilityMo-30WMo (Grade 360)
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

Mo-30W vs Mo (Grade 360) — frequently asked

Is Mo-30W stronger than Mo (Grade 360)?

Yes. Mo-30W has a typical yield strength of 620 MPa (89.9 ksi) against 585 MPa (84.8 ksi) for Mo (Grade 360) — about 6% more. Tensile strength is 760 MPa (110 ksi) vs 760 MPa (110 ksi).

Which is cheaper, Mo-30W or Mo (Grade 360)?

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, Mo-30W or Mo (Grade 360)?

Mo (Grade 360). Its machinability rates fair (40/100) against poor (30/100) for Mo-30W.

Ready to make it?

Upload a CAD file and FabDigit prices the part in Mo-30W and Mo (Grade 360) 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.