Refractory Metals

Stainless designation Standard designations International standards Form Description
Pure Molybdenum
Mo 99.9%
Mo 99.95%

Molybdenum 360
Molybdenum 365 low carbon
ASTM B 386, B 387

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Ability to withstand extreme temperatures without significantly expanding or softening. Exceptional mechanical stability at high temperatures.
Molybdenum Alloys
TZM
TZC

Molybdenum 363
Mo base Ti1.2 Zr0,3 C0,25
ASTM B 386, B 387

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Outstanding strength at high temperatures.
High recrystallization temperature.
Good machinability at room temperature.
Pure Tungsten
W 99.9%
W 99.95%
 ASTM B 760Bar
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The highest melting point of all metals and the highest tensile strength at temperatures over 1650°C.
High density.
Tungsten Alloys
WNiFe
WNiCu
 ASTM B 760Bar
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Unique combinations of high density, mechanical strength, machinability and corrosion resistance
Pure Tantalum
3N
3N2
3N5
3N7
4N
4N5
Ta 99,9%
Ta 99,92%
Ta 99,95%
Ta 99,97%
Ta 99,99%
Ta 99,995%
ASTM B 364, B 365
B 708-01
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Outstanding corrosion resistance in acid and caustic environments. Good thermal conductivity, total biocompatibility
Pure Niobium
3N
3N4
Nb 99,9%
Nb 99,94%
ASTM B 392-03Ingot
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Good corrosion resistance and high temperature properties, good creep strength
Tantalum and Niobium Alloys
Ta2,5WTa W2,5
UNS R 05252
ASTM B 364, B 708Ingot
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Very good properties at low and high temperatures, as well as good corrosion resistance and formability
Ta10WTa W10
UNS R 05255
ASTM B 364, B 708Ingot
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Alloy with a higher strength at high temperatures than pure tantalum. Excellent corrosion resistance especially in acid environments – with the exception of hydrofluoric acid
TaYTa Y5-15ppmASTM B 364, B 708Ingot
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Nb1ZrNb Zr1
UNS R 04251
UNS R04261
ASTM B 392, B 393Ingot
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High strength above 1000°C (1830°F) combined with good forming properties. Suitable for welding
Nb5ZrNb Zr5ASTM B 301, B 392
ASTM B 393
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Insulating material with higher mechanical properties than pure niobium at ambient and high temperatures, as well as better creep strength and infrared reflectivity
TaNb-40Ta60Nb40ASTM B 301, B 392
ASTM B 393
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Alloy with higher tensile and yield strengths than pure tantalum, yet retaining its corrosion resistance in chemical reagents
Tantalum, capacitor quality  PowderHigh electrical properties over a wide temperature range
Tantalum metallurgical qualityTa 99,0 mini PowderSpraying and sintering applications. Increases corrosion resistance of coated products in aggressive environments
Niobium capacitor quality  PowderVery stable dielectric constant with time

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