Tungsten Copper Grades

1 GJB2299A-2005Specification for copper-infiltrated tungsten for rocket nozzle

Class Cu Relative Density of Tungsten Skeleton Density (g/cm3) Relative Density Tensile Strength (Mpa) Fracture Toughness
(MPa m0.5)
Room Temperature 800℃
WCu10 8~12% 77~82% 16.5~17.5 ≥97 ≥300 ≥150 15~18
WCu7 6~9% 82~86% 17~18 ≥97 ≥300 ≥150 13~15

Tungsten skeleton relative density, material density for the measured data; fracture toughness for reference, not for acceptance Index.

2 GB/T 8320-2003 Copper-tungsten and silver-tungsten electrical contacts

Table 1, Copper tungsten grade and silver tungsten electrical contacts of chemical composition and physical properties

Class Cu Ag Impurity W Density Resistance Conductance Hardness(HB) Bending strength
CuW50 50±2   0.5 Balance 11.85 3.2 54 1128  
CuW55 45±2   0.5 Balance 12.30 3.5 49 1226  
CuW60 40±2   0.5 Balance 12.75 3.7 47 1373  
CuW65 35±2   0.5 Balance 13.30 3.9 44 1520  
CuW70 30±2   0.5 Balance 13.80 4.1 42 1716 790
CuW75 25±2   0.5 Balance 14.50 4.5 38 1912 885
CuW80 20±2   0.5 Balance 15.15 5.0 34 2158 980
CuW85 15±2   0.5 Balance 15.90 5.7 30 2354 1080
CuW90 10±2   0.5 Balance 16.75 6.5 27 2550 1160
AgW30   70±1.5 0.5 Balance 11.75 2.3 75 736  
AgW40   60±1.5 0.5 Balance 12.40 2.6 66 834  
AgW50   50±2.0 0.5 Balance 13.15 3.0 57 1030  
AgW55   45±2.0 0.5 Balance 13.55 3.2 54 1128  
AgW60   40±2.0 0.5 Balance 14.00 3.4 51 1226  
AgW65   35±2.0 0.5 Balance 14.50 3.6 48 1324  
AgW70   30±2.0 0.5 Balance 14.90 3.8 45 1471 657
AgW75   25±2.0 0.5 Balance 15.40 4.2 41 1618 686
AgW80   20±2.0 0.5 Balance 16.10 4.6 37 1765 726

Table 2, Overall contact conductive copper and copper tungsten grade side of the chemical composition and physical properties

  Cu Impurity Insition Resistance Density Tensile Strength Hardness(HB)
Hard Semi-hard state
Cu 99.5 0.5   1.85 8.80 196 78 60
Cu Alloy Balance 0.5 1.2 2.10 8.70 250 110 70

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