Product Number

Chemical Composition（%）

State

Temperature（℃）

Application

Property Characteristic

QFB-102

KHF2 ,H3BO3 ,Na2B4O7 ,KBF4

Powder

600～850

Used with Copper base/ Silver brazing filler materials.
Used to brazing Copper alloy, Steel, Stainless Steel parts.

Activity，Low hygroscopic

QFB-112

H2O ,KHF2 ,H3BO3 ,Na2B4O7,KBF4

Paste

600～850

QFB-103

KBF4

Powder

550～750

Activity, High hygroscopic, Less residue.

QFB-204

KF-ALF3 

Powder

560～620

Used with Al-Si filler metals.
Used to brazing Aluminum, Alumal parts.
Especially suitable for Nitrogen protection brazing.

Activity, Low hygroscopic.
Non-corrosion residue, no need for cleaning.