Molybdenum Alloy Stock
Stock Supplies
These sizes are in stock, subject to prior sale. We also supply other sizes and alloys as well. See additional material information below.
Size to Weight Calculatorsheet
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plate
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wire
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rod
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tubing
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Material Information
- ASTM B386, ASTM B387, Type 361
- ASTM Certifications upon request
- No cutting fee for custom lengths
- Custom Sizes Available
- Custom Stocking Plans Available
Our Process
Molybdenum Alloy Facts
Molybdenum’s prime alloy is TZM. This alloy contains 99.2% min. to 99.5% max. of Mo, 0.50% Ti and 0.08% Zr with a trace of C for carbide formations. TZM offers twice the strength of pure moly at temperatures over 1300°C. The recrystallization temperature of TZM is approximately 250°C higher than moly and it offers better weldability.
The finer grain structure of TZM and the formation of TiC and ZrC in the grain boundaries of the moly inhibit grain growth and the related failure of the base metal as a result of fractures along the grain boundaries. This also gives it better properties for welding. TZM costs approximately 25% more than pure molybdenum and costs only about 5-10% more to machine. For high strength applications such as rocket nozzles, furnace structural components, and forging dies, it can be well worth the cost differential.
Rembar offers a wide variety of molybdenum alloys in various mill forms. We also precision-machine & form parts from these various alloys. For a quote on mill products or machined parts, please call us at (914) 693-2620 or send us a “Fast-Quote” request on-line.
Molybdenum Alloys Offered:
Titanium Zirconium Molybdenum (TZM): TZM alloy offers twice the strength of pure molybdenum at temperatures over 1300°C.
Molybdenum-lanthana alloy (ML, MoLa): Molybdenum-Lanthana alloy is often used in high heat applications due to its stability and creep resistance at temperatures above 1500ºC
Molybdenum-Tungsten Alloy (MW): Molybdenum-Tungsten alloys are characterized by good performance at high temperatures, improved corrosion resistance and enhanced etchability.
Molybdenum-Rhenium Alloy (MR): Molybdenum–Rhenium alloys have a lower ductile-to-brittle transition temperature than pure molybdenum, which is advantageous in applications requiring improved room temperature ductility or impact toughness.
Technical Information
Atomic Number: 42
Atomic Weight: 95.94
Density: (20°C) 10.22 g/CC
Melting Point: 2896 K, 2610°C, 4753°Fm
Boiling Point: 4912 K, 5560°C, 8382°F
Coefficient of Thermal Expansion: (20°C) 4.9 x 10-6/°C
Electrical Resistivity: (20°C) 5.7 microhms-cm
Electrical Conductivity: 30% IACS
Specific Heat: .061 cal/g/°C
Thermal Conductivity: .35 cal/cm2/cm°C/sec
Modulus of Elasticity: (20°C) 46 x 106 psi
Mass:
Density at 20° C gm/cc - 10.2
Density at 20° C lb/in 3 - 0.368
Thermal Properties:
Melting Point, °C - 2610
Boiling Point, °C - 5560
Linear Coefficient of Expansion per °C - 4.9 x 10-6
Thermal Conductivity at 20°C, cal/cm2/cm°C/sec. - 0.35
Specific Heat, cal/g/°C; 20°C - 0.061
Electrical Properties:
Conductivity, % IACS - 30%
Resistivity, microhms-cm; 20°C - 5.7
Temperature Coefficient of Resistivity per °C (0-100°C) - 0.0046
Mechanical Properties:
Tensile Strength at room temperature, psi - 100,000-200,000
Tensile Strength-500°C psi - 35,000-65,000
Tensile Strength-1000°C psi - 20,000-30,000
Young's Modulus of Elasticity; lb/in2:
Room Temperature - 46 x 106
500°C - 41 x 106
1000°C - 39 x 106
Spectral Emissivity:
(Wave Length approx. 0.65) - 0.37 (1000°C)
Working Temperature: 1600°C
Recrystallizing Temp: 900-1200°C
Stress Relieving Temp: 800°C
Metallography:
Etchant - Hot H2O2; 6% sol
Polishing - Alumina - Rouge to finish
Heat Shields
Furnace Temperature, x F - 1832, 1832, 2012, 2012, 2400, 2400
Cold Shell Temperature, x F - 100, 100, 100, 100, 100, 100
Number of Shields (1 - 10) - 1, 2, 1, 2, 1, 2
Avg. Shield Emissivity Factor (0 - 1.0) - 0.60, 0.60, 0.60, 0.60, 0.60, 0.60
Cold Shell Emissivity Factor (.9 typ) - 0.90, 0.90, 0.90, 0.90, 0.90, 0.90
Computed Shield Temperature IN x F
#1 Shield - 1484, 1646, 1637, 1811, 1965, 2167
#2 Shield - 1250, 1384, 1672
Computed Heat Loss (KW/ft2) - 4.0, 2.4, 5.5, 3.3, 9.8, 5.9
Furnace Temperature, x F - 2400, 2400, 2400, 2400, 2192, 2192
Cold Shell Temperature, x F - 150, 150, 150, 150, 100, 100
Number of Shields (1 - 10) - 3, 4, 5, 6, 1, 2
Avg. Shield Emissivity Factor (0 - 1.0) - 0.60, 0.60, 0.60, 0.60, 0.60, 0.60
Cold Shell Emissivity Factor (.9 typ) - 0.70, 0.70, 0.70, 0.70, 0.90, 0.90
Computed Shield Temperature IN x F
#1 Shield - 2247, 2282, 2305, 2320, 1789, 1976
#2 Shield - 1976, 2087, 2151, 2194, 1517
#3 Shield - 1563, 1832, 1966, 2047
#4 Shield - 1444, 1723, 1869
#5 Shield - 1354, 1636
#6 Shield - 1282
Computed Heat Loss (KW/ft2) - 4.0, 3.1, 2.6, 2.2, 7.3, 4.3