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Advantage 1: Less silver

T schneeflocke 4 HVACR-Industry

Silver content by comparison
Description
Ag
in wt. %
BrazeTec 4576 45
BrazeTec BlueBraze 3510 More T schneeflocke 3 35
BrazeTec 4076 40
BrazeTec BlueBraze 3010 More T schneeflocke 3 30
BrazeTec 3476 34
BrazeTec BlueBraze 2410 More T schneeflocke 3 24
BrazeTec 3076 30
BrazeTec BlueBraze 2010 More T schneeflocke 3 20

T werkzeug 4 Tool manufacturing industry

Silver content by comparison
Description
Ag
in wt. %
BrazeTec 4900 49
BrazeTec 5081 50
BrazeTec BlueBraze 2810 More  T werkzeug 3 28
Sandwich brazing alloys¹
BrazeTec 49/Cu 49
BrazeTec BlueBraze 28/Cu More   T werkzeug 3 28
BrazeTec 49/Cu plus 49
BrazeTecBlueBraze28/CuplusMoreT werkzeug 3 28

1) The data on the silver content of sandwich brazing alloys refer only to the brazing layer.

Although the working temperature has been used for decades as a specification for brazing alloys, since 2007 the term has no longer been standardised. Furthermore, there has never been a standardised test to determine the working temperature and thus no basis to establish comparable and meaningful values for BrazeTec BlueBraze.

The brazing temperature is now only defined in DIN ISO 857-2. Identical for both temperatures is the requirement that the brazing alloy must wet the base metal.

In addition, the brazing temperature calls for an adequate flow of material. It thus depends on the base materials to be joined, the alloy, the brazing process, the geometry of the gap, including gap width.

Thus, in order for an alloy to flow into the gap, it must be completely molten. Therefore, the liquidus temperature can be viewed in the case of most alloys as the lowest brazing temperature.

Brazing temperature by comparison
Description
Brazing temperature
in °C
Working temperature
in °C
BrazeTec 4576 695 670
BrazeTec BlueBraze 3510   More 700
BrazeTec 4076 725 690
BrazeTec BlueBraze 3010   More 730
BrazeTec 3476 745 710
BrazeTec BlueBraze 2410   More 750
BrazeTec 3076 760 740
BrazeTec BlueBraze 2010   More 765

 


Definition of the operating temperature according to DIN 8505:

The working temperature is the lowest surface temperature at the point to be brazed, whereby the alloy wets the materials to be joined, or at which a liquid phase is formed by interfacial diffusion.

Definition of brazing temperature according to DIN 8505:

Brazing temperature is the predominant temperature at the joining point - it is above the operating temperature.

Definition of brazing temperature according to DIN ISO 857-2:

Temperature at the joining point, whereby the braze wets the surface or in a liquid phase is formed due to interfacial diffusion and sufficient material flow occurs. With some alloys, this takes place below the liquidus phase temperature of the braze.

There is no difference in the gap filling properties of standard brazing. BrazeTec BlueBraze brazing alloys to the standard brazing materials.

In the case of brazing gaps, liquid alloy is forced through the capillary filling pressure into the gap. The narrower the brazing gap, the higher is the capillary filling pressure and the easier the alloy flows.

Capillary pressure
Capillary pressure
 
 
 
Compared to standard conditions for BrazeTec 
 


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Compared to standard conditions for BrazeTec 
4576
 

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Silver brazing alloys, cadmium free in comparison: BrazeTec Bluebraze 2410 vs. Standard BrazeTec 3476

BrazeTec BlueBraze 2410

Composition in wt.%
Ag: 24 | Cu: 43.7 | Zn: 20 | Sn: 2 | Mn: 10 | Si: 0.3

Permitted impurity max. in wt.%
Al: 0.001 | Bi: 0.030 | Cd: 0.010 | P: 0.008 |
Pb: 0.025

Overall impurity max. in wt.%
0.15

Melting range acc. to ISO 17672 in °C
Not applicable, Why?

Melting range acc. to DSC measurement in °C
690 – 750

Brazing temperature min. in °C
750

Tensile strength acc. to DIN EN 12797 in MPa
on S 235: 330 | on E 295: 480

Density in g/cm³
8.4

Maximum elongation at break A 100 in %
17

Electrical conductivity in m/Ωmm²
2.4

 

Less silver
–10 wt.%









Same
temperature

More brazing alloy
+5.5 %
+3.6 m/kg
 
Less costs

Quotation

Wire/Rod Ø 1.5 mm
Standard BrazeTec 3476

Composition in wt.%
Ag: 34 | Cu: 36 | Zn: 27.5 | Sn: 2.5 | Mn: – | Si: –

Permitted impurity max. in wt.%
Al: 0.001 | Bi: 0.030 | Cd: 0.010 | P: 0.008 |
Pb: 0.025 | Si: 0.050

Overall impurity max. in wt.% 
0.15

Melting range acc. to ISO 17672 in °C
630 – 730

Melting range acc. to DSC measurement in °C
655 – 745

Brazing temperature min. in °C
745

Tensile strength acc. to DIN EN 12797 in MPa
on S 235: 360 | on E 295: 480

Density in g/cm³
8.9

Maximum elongation at break A 100 %
11

Electrical conductivity in m/Ωmm²
14.0

 

Silver brazing alloys, cadmium free in comparison: BrazeTec Bluebraze 2010 vs. Standard BrazeTec 3076

BrazeTec BlueBraze 2010

Composition in wt.%
Ag: 20 | Cu: 42.8 | Zn: 25 | Mn: 10 | Sn: – | In: 2 | Si: 0.3

Permitted impurity max. in wt.%
Al: 0.001 | Bi: 0.030 | Cd: 0.010 | P: 0.008 |
Pb: 0.025

Overall impurity max. in wt.%
0.15

Melting range acc. to ISO 17672 in °C
Not applicable, Why?

Melting range acc. to DSC measurement in °C
710 – 765

Brazing temperature min. in °C
765

Tensile strength acc. to DIN EN 12797 in MPa
on S 235: 300 | on E 295: 440

Density in g/cm&sup3
8.3

Maximum elongation at break A 100 in %
17

Electrical conductivity in m/Ωmm&sup2
2.7

 

Less silver
–10 wt.%









Same
temperature

More brazing alloy
+5.7 %
+3.9 m/kg
 
Less costs

Quotation

Wire/Rod Ø 1.5 mm
Standard BrazeTec 3076

Composition in wt.%
Ag: 30 | Cu: 36 | Zn: 32 | Mn: – | Sn: 2 | In: – | Si: –

Permitted impurity max. in wt.%
Al: 0.001 | Bi: 0.030 | Cd: 0.010 | P: 0.008 |
Pb: 0.025 | Si: 0.050

Overall impurity max. in wt.% 
0.15

Melting range acc. to ISO 17672 in °C
665 – 755

Melting range acc. to DSC measurement in °C
675 – 760

Brazing temperature min. in °C
760

Tensile strength acc. to DIN EN 12797 in MPa
on S 235: 360 | on E 295: 480

Density in g/cm&sup3
8.8

Maximum elongation at break A 100 %
11

Electrical conductivity in m/Ωmm&sup2
12.0

 

Silver brazing alloys, cadmium free in comparison: BrazeTec Bluebraze 3510 vs. Standard BrazeTec 4576

BrazeTec BlueBraze 3510

Composition in wt.%
Ag: 35 | Cu: 32.6 | Zn: 20 | Sn: 2 | Mn: 10 | Si: 0.4

Permitted impurity max. in wt.%
Al: 0.001 | Bi: 0.030 | Cd: 0.010 | P: 0.008 |
Pb: 0.025

Overall impurity max. in wt.%
0.15

Melting range acc. to ISO 17672 in °C
Not applicable, Why?

Melting range acc. to DSC measurement in °C
680 – 700

Brazing temperature min. in °C
700

Tensile strength acc. to DIN EN 12797 in MPa
on S 235: 320 | on E 295: 420

Density in g/cm³
8.6

Maximum elongation at break A 100 in %
14

Electrical conductivity in m/Ωmm²
2.4

 

Less silver
–10 wt.%









Same
temperature

More brazing alloy
+5.5 %
+3.6 m/kg
 
Less costs

Quotation

Wire/Rod Ø 1.5 mm
Standard BrazeTec 4576

Composition in wt.%
Ag: 45 | Cu: 27 | Zn: 25.5 | Sn: 2.5 | Mn: – | Si: –

Permitted impurity max. in wt.%
Al: 0.001 | Bi: 0.030 | Cd: 0.010 | P: 0.008 |
Pb: 0.025 | Si: 0.050

Overall impurity max. in wt.%
0.15

Melting range acc. to ISO 17672 in °C
640 – 680

Melting range acc. to DSC measurement in °C
645 – 695

Brazing temperature min. in °C
695

Tensile strength acc. to DIN EN 12797 in MPa
on S 235: 350 | on E 295: 430

Density in g/cm³
9.1

Maximum elongation at break A 100 in %
23

Electrical conductivity in m/Ωmm²
13.0

 

Silver brazing alloys, cadmium free in comparison: BrazeTec Bluebraze 3010 vs. Standard BrazeTec 4076

BrazeTec BlueBraze 3010

Composition in wt.%
Ag: 30 | Cu: 37.8 | Zn: 20 | Mn: 10 | Sn: 2 | Si: 0.2

Permitted impurity max. in wt.%
Al: 0.001 | Bi: 0.030 | Cd: 0.010 | P: 0.008 |
Pb: 0.025

Overall impurity max. in wt.%
0.15

Melting range acc. to ISO 17672 in °C
Not applicable, Why?

Melting range acc. to DSC measurement in °C
690 – 730

Brazing temperature min. in °C
730

Tensile strength acc. to DIN EN 12797 in MPa
on S 235: 350 | on E 295: 440

Density in g/cm³
8.4

Maximum elongation at break A 100 in %
14

Electrical conductivity in m/Ωmm²
2.4

 

Less silver
–10 wt.%









Same
temperature

More brazing alloy
+6.7 %
+4.5 m/kg
 
Less costs

Quotation

Wire/Rod Ø 1.5 mm
Standard BrazeTec 4076

Composition in wt.%
Ag: 40 | Cu: 30 | Zn: 28 | Mn: – | Sn: 2 | Si: –

Permitted impurity max. in wt.%
Al: 0.001 | Bi: 0.030 | Cd: 0.010 | P: 0.008 |
Pb: 0.025 | Si: 0.050

Overall impurity max. in wt.%
0.15

Melting range acc. to ISO 17672 in °C
650 – 710

Melting range acc. to DSC measurement in °C
665 – 725

Brazing temperature min. in °C
725

Tensile strength acc. to DIN EN 12797 in MPa
on S 235: 350 | on E 295: 430

Density in g/cm³
9.0

Maximum elongation at break A 100 in %
23

Electrical conductivity in m/Ωmm²
11.0

 

Silver brazing alloys, cadmium free in comparison: BrazeTec Bluebraze 2810 vs. Standard BrazeTec 4900

BrazeTec BlueBraze 2810

Composition in wt.%
Ag: 28 | Cu: 39.0 | Zn: 20 | Mn: 10 | Ni: 1 | In: 2

Permitted impurity max. in wt.%
Al: 0.001 | Bi: 0.030 | Cd: 0.010 | P: 0.008 |
Pb: 0.025 | Si: 0.05

Overall impurity max. in wt.%
0.15

Melting range acc. to ISO 17672 in °C
Not applicable, Why?

Melting range acc. to DSC measurement in °C
680 – 760

Brazing temperature min. in °C
710

Shear strength¹ acc. to DIN EN 12797 in MPa
> 250

Density in g/cm³
8.5

 

 

1) Measured according to BrazeTec standard, compound 1.2210 & K10

Less Silver
–21 wt. %










Same
Strength

More Brazing Alloy
+4.2 %
 
Less
Costs

Quatation

.
Standard BrazeTec 4900

Composition in wt.%
Ag: 49 | Cu: 16 | Zn: 23 | Mn: 7.5 | NI: 4.5 | In: –

Permitted impurity max. in wt.%
Al: 0.001 | Bi: 0.030 | Cd: 0.010 | P: 0.008 |
Pb: 0.025 | Si: 0.05

Overall impurity max. in wt.%
0.3

Melting range acc. to ISO 17672 in °C
680 – 705

Melting range acc. to DSC measurement in °C
680 – 705

Brazing temperature min. in °C
690

Shear strength¹ acc. to DIN EN 12797 in MPa
> 250

Density in g/cm³
8.9

 

 


Silver brazing alloys, cadmium free in comparison: BrazeTec Bluebraze 2810 vs. Standard BrazeTec 5081

BrazeTec BlueBraze 2810

Composition in wt.%
Ag: 28 | Cu: 39.0 | Zn: 20 | Mn: 10 | Ni: 1 | In: 2

Permitted impurity max. in wt.%
Al: 0.001 | Bi: 0.030 | Cd: 0.010 | P: 0.008 |
Pb: 0.025 | Si: 0.05

Overall impurity max. in wt.%
0.15

Melting range acc. to ISO 17672 in °C
Not applicable, Why?

Melting range acc. to DSC measurement in °C
680 – 760

Brazing temperature min. in °C
710

Shear strength¹ acc. to DIN EN 12797 in MPa
> 250

Density in g/cm³
8.5

 

 

1) Measured according to BrazeTec standard, compound 1.2210 & K10

Less Silver
–22 wt. %










Same
Strength

More Brazing Alloy
+7.6 %
 
Less
Costs

Quotation

.
Standard BrazeTec 5081

Composition in wt.%
Ag: 50 | Cu: 20 | Zn: 28 | Mn: – | NI: 2 | In: –

Permitted impurity max. in wt.%
Al: 0.001 | Bi: 0.030 | Cd: 0.010 | P: 0.008 |
Pb: 0.025 | Si: 0.05

Overall impurity max. in wt.%
0.3

Melting range acc. to ISO 17672 in °C
660 – 715

Melting range acc. to DSC measurement in °C
670 – 730

Brazing temperature min. in °C
730

Shear strength¹ acc. to DIN EN 12797 in MPa
> 230

Density in g/cm³
9.2

 

 


Sandwich alloys, Cd free in comparison: BrazeTec Bluebraze 28/Cu vs. Standard BrazeTec 49/Cu

BrazeTec BlueBraze 28/Cu

Composition¹ in wt.%
Ag: 28 | Cu: 39.0 | Zn: 20 | Mn: 10 | Ni: 1 | In: 2

Permitted impurity max. in wt.%
Al: 0.001 | Bi: 0.030 | Cd: 0.010 | P: 0.008 |
Pb: 0.025 | Si: 0.05

Overall impurity max. in wt.%
0.15

Melting range acc. to ISO 17672 in °C
Not applicable, Why?

Melting range acc. to DSC measurement in °C
680 – 760

Brazing temperature min. in °C
710

Shear strength² acc. to DIN EN 12797 in MPa
> 150

Density in g/cm³
8.7

 

1) The data on the silver content of sandwich brazing alloys refer only to the brazing layer.

2) Measured according to BrazeTec standard, compound 1.2210 & K10;

Less Silver
–21 wt. %










Same
Strength

More Brazing Alloy
+3.1 %
 
Less
Costs

Quotation

.
Standard BrazeTec 49/Cu

Composition¹ in wt.%
Ag: 49 | Cu: 27.5 | Zn: 20.5 | Mn: 2.5 | NI: 0.5 | In: –

Permitted impurity max. in wt.%
Al: 0.001 | Bi: 0.030 | Cd: 0.010 | P: 0.008 |
Pb: 0.025 | Si: 0.05

Overall impurity max. in wt.%
0.3

Melting range acc. to ISO 17672 in °C

Melting range acc. to DSC measurement in °C
670 – 720

Brazing temperature min. in °C
710

Shear strength² acc. to DIN EN 12797 in MPa
> 150

Density in g/cm³
9.0

 

 


Sandwich alloys, Cd free in comparison: BrazeTec Bluebraze 28/Cu plus zu Standard BrazeTec 49/Cu plus

BrazeTec BlueBraze 28/Cu plus

Composition¹ in wt.%
Ag: 28 | Cu: 39.0 | Zn: 20 | Mn: 10 | Ni: 1 | In: 2

Permitted impurity max. in wt.%
Al: 0.001 | Bi: 0.030 | Cd: 0.010 | P: 0.008 |
Pb: 0.025 | Si: 0.05

Overall impurity max. in wt.%
0.15

Melting range acc. to ISO 17672 in °C
Not applicable, Why?

Melting range acc. to DSC measurement in °C
680 – 760

Brazing temperature min. in °C
710

Shear strength² acc. to DIN EN 12797 in MPa
> 180

Density in g/cm³
8.7

 

1) The data on the silver content of sandwich brazing alloys refer only to the brazing layer.

2) Measured according to BrazeTec standard, compound 1.2210 & K10

Less Silver
–21 wt. %










Same
Strength

More Brazing Alloy
+5.5 %
 
Less
Costs

Quaotation

.
Standard BrazeTec 49/Cu plus

Composition¹ in wt.%
Ag: 49 | Cu: 27.5 | Zn: 20.5 | Mn: 2.5 | NI: 0.5 | In: –

Permitted impurity max. in wt.%
Al: 0.001 | Bi: 0.030 | Cd: 0.010 | P: 0.008 |
Pb: 0.025 | Si: 0.05

Overall impurity max. in wt.%
0.3

Melting range acc. to ISO 17672 in °C

Melting range acc. to DSC measurement in °C
670 – 720

Brazing temperature min. in °C
710

Shear strength² acc. to DIN EN 12797 in MPa
> 180

Density in g/cm³
9.0

 

 


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