Tungsten Base Alloys

HIGH DENSITY

Tungsteno

Two times heavier than steel and more than 50% of lead, tungsten alloys with a copper or nickel matrix are essential for a wide variety of aerospace, military, radiation and nuclear shielding applications. They are produced by processes based on powder technology and subsequent sintering.

TYPOLOGY

Class 1 - SYNTES 1 in WNiFe and WNiCu with density 17g/cm³

Class 2 - SYNTES 2 in WNiFe and WNiCu with density 17,6g/cm³

Class 3 - SYNTES 3 in WNiFe and WNiCu with density 18 g/cm³

Class 4 - SYNTES 4 in WNiFe with density 18,5 g/cm³

Alloys manufactured with reference to ASTM B777 - 15 standards

CLASS	GRADE	CONTENT [%W]	DENSITY [g/cc]	HARDNESS [HRC]
1	Syntes 1	90	16,85 - 17,25	32
2	Syntes 2	92,5	17,15 - 17,85	33
3	Syntes 3	95	17,75 -18,35	34
4	Syntes 4	97	18,25 - 18,85	35

Tab.1 - Composizione - Densità - Durezza

CLASS	GRADE	TENSILE STRENGHT [MPa]	TIELD STRENGHT [Rp 0,2% MPa]	ELONGATION [%]
1	Syntes 1	758	517	5
2	Syntes 2	758	517	5
3	Syntes 3	724	517	3
4	Syntes 4	689	517	2

Tab.2 - Mechanical physical properties

Many applications requiring high specific weight masses (such as weighing weights for a given system, inertial masses, high power penetrators, radiation screens, etc ...) use tungsten heavy alloys as they are the ideal compromise between bulk , cost and performance. Similar to features is uranium, but its potential hazard strongly limits its use.

tungsteno

Their most relevant property is given by the high density values of 17-19 g / cm³. Comparable densities are achieved only by precious metals such as platinum but obviously at an extremely high cost. Other advantages of these heavy alloys are their high level of elasticity, which gives them a high degree of workability far superior to the one of pure tungsten.

Heavy Alloys

Tungsten alloys can be machined to obtain both intermediate semi-finished for further processing by the customer or as finished product in accordance with the drawing specifications. The use of alternative materials and production cycles and the absence of polluting metals such as lead within these alloys, gives them the purpose of diminishing or abandoning the use of hazardous materials and substances for man and the environment. Here below their main application :

· Balancing weights for the aircraft, helicopter rotors and missiles.

· High power penetrants for heavy armored vehicles

· Medical sector

· Containers of radioactive isotopes

· Radar components

· Automotive sector