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Refractory Metal Mo-La vs R02002

Refractory Metal · grade comparison

Refractory Metal Mo-La and R02002 are both refractory metal grades. Mo-La is the stronger of the two: yield strength 560 MPa (81.2 ksi) against 240 MPa (34.8 ksi) for R02002, about 133% more; tensile strength follows at 700 MPa (102 ksi) vs 450 MPa (65.3 ksi). In exchange, R02002 is the more ductile: elongation 25% versus 8% for Mo-La, and Mo-La is harder (228 HB vs 165 HB). Mo-La is lighter (10.2 g/cm³ vs 13.31 g/cm³ for R02002) and Mo-La is stiffer (320 GPa vs 138 GPa). On the shop floor, R02002 welds better (very good vs poor) and R02002 sits in a lower cost tier (high, $$$$) than Mo-La (specialty, $$$$$).

Mo-LaChoose it when strength drives the design, or when weight is the constraint.

R02002Choose it when the part is bent, formed or impact-loaded, or when it will be welded.

Mo-La vs R02002: properties

Mo-LaR02002

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

320 GPa46.4 Msi
138 GPa20 Msi

Shear Modulus

122 GPa17.7 Msi
55 GPa8 Msi

Bulk Modulus

265 GPa38.4 Msi
110 GPa16 Msi

Poisson's Ratio

0.31
0.3

Tensile Strength (Ultimate)

700 MPa102 ksi
450 MPa65.3 ksi

Yield Strength (0.2% offset)

560 MPa81.2 ksi
240 MPa34.8 ksi

Elongation at Break

8%
25%

Reduction in Area

25%
40%

Compressive Strength

800 MPa116 ksi
—

Shear Strength

420 MPa60.9 ksi
290 MPa42.1 ksi

Fatigue Strength (Endurance Limit)

300 MPa43.5 ksi
—

Fracture Toughness (K_IC)

20 MPa·√m18.2 ksi·√in
—

Charpy V-Notch Impact (RT)

6 J4.4 ft·lbf
—

Hardness, Brinell

228 HB
165 HB

Hardness, Rockwell B

99 HRB
88 HRB

Hardness, Rockwell C

21 HRC
—

Hardness, Vickers

240 HV
170 HV

Physical

Density and transition temperatures.

Density

10.2 g/cm³0.37 lb/in³
13.31 g/cm³0.48 lb/in³

Melting Point (Solidus)

2,620°C4,748 °F
2,233°C4,051 °F

Liquidus Temperature

2,620°C4,748 °F
2,233°C4,051 °F

Thermal

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

Thermal Conductivity

120 W/m·K69.3 BTU/hr·ft·°F
23 W/m·K13.3 BTU/hr·ft·°F

Specific Heat Capacity

250 J/kg·K0.06 BTU/lb·°F
144 J/kg·K0.03 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

5.3 µm/m·K2.9 µin/in·°F
5.9 µm/m·K3.3 µin/in·°F

Latent Heat of Fusion

390 J/g168 BTU/lb
152 J/g65.3 BTU/lb

Max Service Temperature (continuous)

1,700°C3,092 °F
400°C752 °F

Min Service Temperature

-50°C-58 °F
-196°C-321 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

30 % IACS
5.2 % IACS

Electrical Resistivity

5.7×10⁻⁸ Ω·m2.24 µΩ·in
3.31×10⁻⁷ Ω·m13 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.15 V
—

Corrosion Resistance

55 / 100
85 / 100

Manufacturability

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

Machinability

35 / 100
30 / 100

Machinability Rating (AISI 1212 = 100 %)

40%
20%

Weldability

20 / 100
70 / 100

Formability (cold)

25 / 100
60 / 100

Brazeability / Solderability

70 / 100
40 / 100

Polishability

65 / 100
70 / 100

Castability

—
25 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

380 MJ/kg163,371 BTU/lb
2,000 MJ/kg859,846 BTU/lb

Embodied Carbon (primary production)

25 kg CO₂/kg
130 kg CO₂/kg

Embodied Water

300 L/kg35.9 gal/lb
—

Typical Recycled Content

25%
20%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

69 kN·m/kg
34 kN·m/kg

Specific Stiffness (E / density)

31.4 MN·m/kg
10.4 MN·m/kg

Modulus of Resilience

490 kJ/m³
209 kJ/m³

Thermal Diffusivity

47.1 mm²/s
12 mm²/s

Thermal Shock Resistance Index

50
13

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-LaR02002

Manufacturing and finishing

CapabilityMo-LaR02002
Default condition——
Relative cost$$$$$ Specialty$$$$ High
Min. machined wall——
Best machined surface——

Mo-La vs R02002 — frequently asked

Is Mo-La stronger than R02002?

Yes. Mo-La has a typical yield strength of 560 MPa (81.2 ksi) against 240 MPa (34.8 ksi) for R02002 — about 133% more. Tensile strength is 700 MPa (102 ksi) vs 450 MPa (65.3 ksi).

Which is cheaper, Mo-La or R02002?

R02002 is the lower-cost material: it sits in the high tier ($$$$) while Mo-La is specialty ($$$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.

Which is easier to machine, Mo-La or R02002?

Mo-La. Its machinability rates fair (35/100) against poor (30/100) for R02002; for welding the order is R02002 first (very good, 70/100) then Mo-La (poor, 20/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in Mo-La and R02002 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.