Filler Metals

BrazeTec 4900 BrazeTec 4900

Technical Data Sheet

BrazeTec 4900

 

TD BT 0016 E.01

 

 

Standard

AG 502 acc. DIN EN 1044 (L-Ag49 acc. DIN 8513)

B-Ag49ZnCuMiNi 680/705 acc. ISO 3677

 

Nominal composition in wt.-%                       Ag 49; Cu 16; Zn 23; Mn 7,5; Ni 4,5

Permited impurities (weight-%):

AI 0,001; Bi 0,030; Cd 0,030; P 0,008; Pb 0,025; Si 0,05; Total impurities 0,15

 

Technical data                             

Melting range                                                      app. 680-705°C           (DIN EN 1044)

Working temperature                                           app. 690°C                 (DIN EN 1044)

Density                                                               app. 8,9 g/cm3            (DIN EN 1044)

Shear strength                                                     250 - 300 Mpa     (cemented carbide/steel)

Eletrical Conductivity                                            app. 4,0 m/Ωmm2

Operating temperature of brazed joint                    max. 200°C (without loss in strentg)

 

 

Standard delivery form*

Wire:         1,0 - 1,5 - 2,0 mm Ø

Rods:        1,0 - 1,5 - 2,0 mm Ø, 500 mm length

Ribbon: 0,1/ 0,2/ 0,3/ 0,4 mm thickness and 70 mm width

Preforms: rings, shaped parts, sections, stemped parts, lamina, discs, perforated plates

*Other delivery forms on request

 

Application

BrazeTec 4900 is a low melting silver based brazing alloy with excellent flow characteristics. The brazing alloy is suitable for brazing of cemented carbides and materials which are difficult to wet, such as tungsten, molybdenum, tantalum and chromium. The reachable strength of the joint depends from the parent metals.

It can be used for brazing with flame or induction brazing procedures.

Typical applications are found e.g. in the automotive and in the eletric industy.