RWMA Class 10 - Elkonite 5W3 Copper Tungsten | ALCAVIL Technical Data Sheet

RWMA Class 10 - Elkonite 5W3 Copper-Tungsten

CuW 70/30

RWMA CLASS 10

Ref: AWS J1.3/J1.3M:2020 - Specification for Materials Used in Resistance Welding Electrodes and Related Equipment

ELKONITE 5W3 PROPERTIES

Property	Value	Unit
Electrical Conductivity	48	% IACS
Hardness	90	HRB
Density	14.18	g/cm3

NOMINAL COMPOSITION

Copper (Cu)	Tungsten (W)
30%	70%

TYPICAL PHYSICAL PROPERTIES

Property	Typical Value	Unit
Electrical Conductivity	48	% IACS
Hardness	90	HRB
Density	14.18	g/cm3
Melting Point (Cu matrix)	1083	C
Ultimate Strength	85,000	PSI
Cross Breaking Strength	140,000	PSI

RECOMMENDED APPLICATIONS

Light to medium pressure projection dies
Facings and inserts for flash and butt welding dies
Projection welding electrodes
Seam welding electrodes
Bearing facings for electro-forming and electro-forging
EDM electrodes for higher wear resistance

KEY FEATURES

Highest conductivity of RWMA Elkonites
Excellent resistance to sticking
Optimal conductivity/hardness balance
Frequently used for EDM electrodes
Good wear resistance

EQUIVALENT DESIGNATIONS

RWMA Class 10 Elkonite 5W3 CuW 70/30 30% Cu / 70% W W70Cu30

APPLICATION NOTE: Elkonite 5W3 (RWMA Class 10) is used for facings and inserts for flash and butt welding dies, projection electrodes, seam welding, bearing facings for electro-forming and electro-forging. Frequently used for EDM electrodes due to its higher wear resistance. Its composition of 30% copper and 70% tungsten offers the best conductivity (48% IACS) of RWMA-classified Elkonite grades.