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Wires

Molybdenum Wire is made up of commercially pure grade molybdenum with over 99.95% purity. The density of the material is high and the melting point is very high, next only to titanium and tungsten among the entire spectrum of elements. The wires range in specifications such as ASTM B387. The wire diameter ranges as well. There are EDM, spray wire, standard wire and clean wire types.They range from 0.006 inches to 1/8 inches in diameter depending on the type. The ASTM B387 Wire Mesh is used in high heat applications. The material is being used in place of tungsten more and more in the recent times. The 0.18mm Mo1/Mo2 wire for EDM can be used in high temperature resistant furnaces, heating elements, automotive parts and in the aerospace industry as well. The material can also be used as the Molybdenum Cutting Wire.


ASTM B387 Wire Mesh Specification Format
Type: Molybdenum Wires
Material: W61 / W91, Pure Molybdenum and Alloy molybdenum
Purity: 99.95%Min.
Melting Point: 3410
Surface: Polished
Density: 19.2g/cm3
Diameter: 0.01-2.00mm, Dia. 0.18mm
Tungsten color: Black and White
Grade Mo1,Mo2,TZM,Mo-La
Tensile Strength: 2770 N/mm2
Chemical Properties of 0.18mm Mo1 wire for EDM
Element Ni Mg Fe Pb Al Bi Si Ca P Cu
Concentration(%) 0.0006 0.0006 0.001 0.0006 0.003 0.0006 0.003 0.0006 0.001 0.0006
Element C O Sb
Concentration(%) 0.001 0.005 0.0006
Purity(Metallic Base) Mo≥99.95%
Mechanical Properties of EDM 0.18mm Mo2 wire
Properties Metric Imperial
Tensile strength (annealed) 324 MPa 47000 psi
Shear strength (torsional strain rate 0.25/s) 500 MPa 72500 psi
Compressive yield strength (0.01% yield) 400 MPa 58000 psi
Modulus of elasticity 330 GPa 47900 ksi
Modulus of elasticity at elevated temperature (@2000°C/3630°F) 160 GPa 23200 ksi
Thermal Coefficient of Expansion:

5 x 10-6 cm/cm @ 25 o C

Electrical Conductivity:

34% I.A.C.S.

Thermal Conductivity:

1.38 W/cm/K @ 298.2 K

Electrical Resistivity:

5.2 microhm-cm @ 0 o C

Weight Chart Of Molybdenum Spray Wire
Diameter (μm)
Weight (mg/200mm) 		Weight (mg/200mg) Tolerance (%) Diameter Tolerance (%)
Grade 1 Grade 2 Grade 1 Grade 2
20≤d<30 0.65~1.47 ±2.5 ±3
30≤d<40 >1.47~2.61 ±2.0 ±3
40≤d<100 >2.61~16.33 ±1.5 ±3
100≤d<400 >16.33~256.2 ±1.5 ±4
400≤d<600 ±1.5 ±2.5
600≤d<3200 ±1.0 ±2.0