Fabricated OEM Tungsten Heavy Alloy Special Parts Used for Medical / Industry

 

Tungsten heavy alloy is widely used for counter weights, working as so-called tungsten weight in many fields, such as in machine, racing car, yacht, airplane, etc. Density of tungsten alloy could be ranged from 17.0g/cm3 to 18.5g/cm3. and the capacity could be reduced if it needs to be use in a small place. Besides, as its special properties, such as high hardness, wearing rsistance, excellent elongation, well machining ability, it is a suitable material for counterweight for the machine and airplane.

 

Characteristics of the tungsten heavy alloy

1. the high density but small volume

2. the high melting point

3. the excellent hardness

4. the superior wearing resistance

5. the high ultimate tensile strength

6. the  high ductility

7. the great machinability

8. the non-toxic and environmental friendly

9. the high impact resistance

10. the crack resistance

 

the advantages of the tungstrn heavy alloy parts

the density of the tungsten heavy alloy parts is up to 18.5g/cm3. the mechanical properties is either dynamic or static location. They are weakly Ferro magnetic. If specifically required, they are non-magnetic. At the meantime, they have the great resistance to the corrosion. What's more, the tungsten heavy alloy is easily machined, easily mechanically joined, brazed or shrunk fit to other material.

 

Tungsten heavy alloy properties

Alloy Type (%)	HD17 90 W 6 Ni 4 Cu	HD17D 90 W 7 Ni 3 Fe	HD17.5 92.5 W 5.25 Ni 2.25 Fe	HD17.6 92.5 W Balance Ni, Fe, Mo	HD17.7 93 W Balance Ni, Fe, Mo	HD18 95 W 3.5 Ni 1.5 Cu	HD18D 95 W 3.5 Ni 1.5 Fe	HD18.5 97 W 2.1 Ni .9 Fe
MIL-T-21014	Class 1	Class 1	Class 1	-	-	Class 3	Class 3	Class 4
Typical Density (g/cc)	17.1	17.1	17.5	17.6	17.7	18	18	18.5
Typical Hardness RC	24	25	26	30	32	27	27	28
Ultimate Tensile Strength Min (ksi)	110,000	120,000	114,000	120,000	125,000	110,000	120,000	123,000
Minimum % Elongation (1" gage length)	6	10	7	4	4	7	7	5
Proportional Elastic Limit (PSI)	45,000	52,000	46,000	55,000	60,000	45,000	44,000	45,000
Modulus of Elasticity (x106psi)	40 x 106	45 x 106	47 x 106	52 x 106	53 x 106	45 x 106	50 x 106	53 x 106
Coefficient of Thermal Expansion x10-6/0C (20-400C)	5.4	4.61	4.62	4.5	4.5	4.43	4.6	4.5
Thermal Conductivity (CGS Units)	0.23	0.18	0.2	0.27	0.27	0.33	0.26	0.3
Electrical Conductivity (% IACS)	14	10	13	14	14	16	13	17