Mechanical Properties and Tolerance
Mo Wire for Lamp Mo Wire for Cutting
Diameter
mm Tolerance
% 200mm
mg Tolerance
% Diameter
mm Tolerance
mm Tensile strength
≥MPa
Φ0.02∽0.03 0.65∽1.47 ±1.5 Φ0.10∽0.14 ±0.002 2200
Φ0.03∽0.10 1.47∽16.33 ±1.0 Φ0.15∽0.19 ±0.003 1900
Φ0.10∽0.40
Φ0.40∽2.00 ±1.0 Φ0.10∽0.14 ±0.002 2200
Note：d≤0.2mm, G=1633d2, d＞0.2mm, G=1600d2
Note2：d-diameter, G-Weight
Special requirements to be agreed on by the supplier and buyer.
2.Tungsten Rod, Wire
Table 3 Tungsten Rod
Diameter（mm） Tolerance（%） Length（mm）
＜20 ±0.1 2000
20~30 ±0.1 1200
30~60 ±0.1 1000
60~70 ±0.2 800
70~90 ±0.2 600
＞90 Special requirements to be agreed on by the supplier and buyer.
Note：Black W-rod Φ0.5∽3Straightened Rods after Drawn；Φ3.0∽18Straightened and Ground Rods after Swaged；Φ18∽ Ground Rods after machined.
Table 4 Tungsten Wire
Pure W-wire W≥99.99% K≤0.001 Fe≤0.0015 Mo≤0.0015 Others≤0.002 Total≤0.01
Doped W-wire W≥99.9% K≤0.003∽0.008 Fe≤0.002 Mo≤0.005 Others≤0.002 Total≤0.04
Diameterμm Φ10∽18 Φ18∽40 Φ40∽80 Φ80∽300 Φ300∽350 Φ350∽500 Φ500∽
200mm /mg 0.3∽0.98 0.98∽4.85 4.85∽19.39 19.39∽272.71 272.71∽371.18
Pure W-wire 0.1mm∽3.0mm，Doped W-wire 0.005mm∽3.0mm.
W-wire is regular black covered with graphite. Metallic luster after graphite removed.
