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Cu Brazing Fitting & Flanges
Home > ǰҰ > Cu Brazing Fitting & Flanges
Chemical Component Aginst Using Items.
Material
Application
Code/Element
Chemical - Component
Cu
Ni
Fe
Mn
Zn
Pb
P
Sn
Al
As
COPPER
PIPE
ASTM B88-C12200
Min
100
-
-
-
-
-
0.015
-
-
-
Max
-
-
-
-
-
-
0.040
-
-
-
BAR STOCK
ASTM B124-C11000
Min
100
-
-
-
-
-
-
-
-
-
Max
-
-
-
-
-
-
-
-
-
-
PIPE
JIS H3300-C1220(1/2H)
Min
100
-
-
-
-
-
0.015
-
-
-
Max
-
-
-
-
-
-
0.040
-
-
-
YBsC2
CASTING
JIS H5120-CAC202
(JIS H5120-YBsC2)
Min
65.0
-
-
-
24.0
0.5
-
-
-
-
Max
70.0
1.0
0.8
-
34.0
3.0
-
-
-
-
AL/Br
PIPE
JIS H3300-C6870
Min
76.0
-
-
-
REM
-
1.0
-
1.8
0.02
Max
79.0
-
0.05
-
REM
0.05
-
-
2.5
0.06
BRONZE
CASTING
ASTM B62-C83600
Min
84.0
-
-
-
4.0
4.0
-
4.0
-
-
Max
86.0
1.0
-
-
6.0
6.0
-
6.0
-
-
 
Mechnical Property Aginst Using Items.
Material
Application
Code/Element
Mechnical - Property
Tensile-St(Ksi)
Yield-St(Ksi)
Elongation
Hardness
COPPER
PIPE
ASTM B88-C12200
Min
206(30)
-
-
-
Max
-
-
-
55
BAR STOCK
ASTM B124-C11000
Min
206(30)
-
-
-
Max
-
-
-
55
PIPE
JIS H3300-C1220(1/2H)
Min
245
-
-
HR 30T / 30
Max
325
-
-
HR 30T / 60
YBsC2
CASTING
JIS H5120-CAC202
(JIS H5120-YBsC2)
Min
195
-
0.2
-
Max
-
-
-
-
AL/Br
PIPE
JIS H3300-C6870
Min
375
-
40
-
Max
-
-
-
-
BRONZE
CASTING
ASTM B62-C83600
Min
205(30)
95(14)
0.2
-
Max
-
-
-
-
 
Brazing, Soldering Instruction.
Brazing is a distinctive joining method of metals without melting of the parent metals.
Brazing is a joining process of two or more metal parts into a single assembly by heating the assembly to a least 800F.
Namelv. brazing is the joining of metals through the use of heat and a filler metal-one whose melting temperature is above 840F.
But below the melting point of the filler metals being joined (above 840F) (Soldering is similar to brazing but the filler metals
below 800F) When the brazing is proceeding, the filler metals are to be melted but the base metals are not to be melted by heating.
The filler metals melted will be infiltrated by the capillary phenomenon through the narrow gap of base metals.
 
 
In case of general application
It is taking advantage of joining in the piping of non-ferrous metals.
Complicate shapes of goods.
Important point on the external appearance
The jointing of diffent materials
Wide-Difference of wall thickness

The characteristic of brazing is substantially different from ARC welding, Therefore brazing shall be checked below points.
 
 
Filler metals
The filler metals shall be melted on lower temperature than parent metals. In case of Copper & Copper-Alloy metal,
"Silver brazing rod", "Brass welding rod" or "Phosphor copper welding rod" is used as a filler metals.
 
 
Cleaning
Cleaning of the parent metals is most important operation.
Brazing can only be carried out under correct conditions if joining parts are clean and free from grease, oxidation, rust.
 
 
Gap
The gap between material and material shall be tight because of brazing will be proceed from capillary action
 
 
Flux
- The flux will be used properly fot the purpose of no more proceding oxidization in process of brazing.
- After brazing, flux and slags should be removed. The oxidization is caused on flux & slags.
 
 
 
 
 
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