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TZM Alloy

Linear Formula: Mo/ 0.5% Ti/ 0.8% Zr/ 0.02% C

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Features

Linear Formula:	Mo / 0.5% Ti / 0.8% Zr / 0.02% C
Material:	TZM Alloy
Purity:	0.4-0.54% Ti, 0.06-0.12 %Zr, 0.01-0.04% C, balance Mo
Standard:	ASTM B387 & ASTM B386

TZM Molybdenum Alloy Description

TZM is a molybdenum-based alloy that contains 0.5% titanium, 0.08% zirconium, and 0.03% carbon. TZM moly alloy is twice as strong as pure molybdenum at 1300°C. The best doping percentages are 0.4–0.6% of titanium, 0.07-0.12% of zirconium, and 0.01-0.04% of carbon. SSC has a lot of experience making TZM material by powder sintering or vacuum arc-casting.

TZM Alloy is also known as molybdenum TZM, molybdenum high temperature TZM, and titanium-zirconium-molybdenum alloy.

TZM molybdenum has a higher recrystallization temperature, higher strength, and harderness than pure molybdenum. This alloy has a recrystallization temperature of about 250°C. It is higher than pure molybdenum and can weld better. For high strength applications like rocket nozzles, furnace structural components, and forging dies, it can be well worth the cost difference.

TZM has many good qualities for high temperatures, like being strong, resistant to creep, hard, and having low pressure. It also has a low coefficient of expansion, good resistance to heat and corrosion, and good machineability. TZM is more stable than pure molybdenum and can be broken down faster. This is because the molybdenum substrate is doped with a small amount of zirconium and titanium. The composite carbides Mo2C, TiC, and ZrC help molybdenum become more weldable and resistant to creep than pure molybdenum.

Titanium-Zirconium-Molybdenum (TZM) alloy is a good material for making things that need to be strong and hot, like in aerospace, electronics, and heat treatment. TZM is good for working in temperatures between 700 and 1400 degrees Celsius. For example, TZM can be used to heat treat parts like shielding and supporting parts, make dies for isothermal forging, cast non-ferrous and ferrous metals, and make TZM piercing plugs. TZM is a good choice for aerospace applications, including rocket nozzles and hot gas valves.

Specification for Molybdenum Alloy Products

TZM Alloy Wire

Item Name	TZM Molybdneum Wire
Specification	ASTM B387, TYPE 364
Size	0.5mm-4.0mm diameter x L
Shape	Straight wire, rolled wire
Surface	Black oxide, chemically cleaned

TZM Alloy Rod

Name	TZM Molybdenum Rod
Specification	ASTM B387, TYPE 364
Size	4.0mm-100mm diameter x <2000mm L
Process	Drawing, swaging
Surface	Black oxide, chemically cleaned, Grinding

TZM Alloy Plate

Name	TZM Alloy Plate
Specification	ASTM B386, TYPE 364
Size	4.75mm-50mm thickness x W x L
Process	Forging, rolling
Surface	Chemically cleaned, Grinding

TZM Alloy Tube

Name	Molybdenum Alloy Tube
Specification	ASTM B387, TYPE 364
Size	0.8"-20" OD, 106" max length for single piece of TZM alloy tube
Process	Sintering, drilling
Surface	Black oxide, chemically cleaned, Grinding

TZM Alloy Composition

ELEMENT	Ti	Zr	C	S	Fe	Ni	N	Mo
CONTENT%	0.4-0.6	0.07-0.12	0.01-0.04	≤ 0.006	≤ 0.01	≤ 0.005	≤ 0.003	Balance

Mechanical Specification for Molybdenum Alloy

Tensile Strength	KSI (Mpa)-RT	110 (760)
	KSI (Mpa)-500°C	--
	KSI (Mpa)-1000°C	--
Elongation	% in 1.0".	15
Hardness	DPH	220
Modules of Elasticity	KSI	46000
Modules of Elasticity	Gpa	320

TZM Molybdenum Alloy Properties (Theoretical)

Compound Formula	Mo-Ti-Zr
Appearance	Metallic solid in various forms (rod, sheet, plates)
Melting Point	2623 °C
Boiling Point	N/A
Density	10.22 g/cm³
Solubility in H2O	N/A
Electrical Resistivity	6.85 micro-ohm-cm
Specific Heat	0.073 Cal/gm/°C
Thermal Conductivity	0.48 Cal/cm²/cm°C/sec
Thermal Expansion	5.20 micro-in/°C x 10-⁶