Products and Solutions for Heat Exchangers Producers

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Phoebe Palmer
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1 TM Products and Solutions for Heat Exchangers Producers

2 Our mission is to support you in improving all aspects of your brazing processes... time and time again.

3 Welcome Pietro Galliani Brazing S.p.A is a leading European producer of brazing products with now the widest range of products in Europe. We have a 100 year history in the metal working industry. Ing. Pietro Galliani started our company more than 100 years ago in Vergato, Italy. He was a pioneer in the metal working industry and this strong pioneering spirit is still with us today. Since 1995 we have been developing and producing high qualiy brazing products, while at the same time studying the processes of our customers. Our mission is to support you in improving all aspects of your brazing processes... time and time again. This short guide is intended to give you a brief overview of PGB product and solutions for your industry and to maybe provide you with new ideas or solutions for current future problems in the area of brazing. For more information and support please contact your local Pietro Galliani Brazing sales technician or send us an at info@pietrogallianibrazing.com. We look forward to working with you. Brian Vilborg

Copper to Copper Joining Standard copper to copper joining it most efficiently done without

The group of alloys that enable this is the Copper Phosphorus based materials (CuP).

silver are added (CuPAg). Many of the CuP and CuPAg alloys are normed.

4 Copper to Copper Joining Standard copper to copper joining it most efficiently done without the use of flux. The group of alloys that enable this is the Copper Phosphorus based materials (CuP). Depending on the joint design, application and enviroment of operation varias quantities of silver are added (CuPAg). Many of the CuP and CuPAg alloys are normed. One big misconception is that all materials in the same norm have the same performance. Pietro Galliani Brazing provides normed products with excellent performance. Pietro Galliani Products are made in Italy!

PGB Copper Phos Alloys are amongst the highest quality in the market.

problems with brazing inconsistent gaps.

Cu P 7 Sn 7 86 7 Sn 7 645695 690 8 Galflo Cu P 8 92 8 750 8 0,4 93,6 6 740 Galflo Cu P Ag 1 1 92,5 6,5 645810 Galflo Cu P Ag 2 2 91,8 6,2 Galflo Cu P Ag 5 5 88,8 6,2 Galflo Cu P

8 EN 1044 DIN 8513 NFA 81362 BS 1845 CP 203 L Cu p6 CP 6 CP 202 L Cu p7 07B1 CP 3 CP 201 L Cu p8 08B1 8,1 8,1 CP 105 07B2 645800 8,1 BCup6 CP 105 L Ag 2P 06B1 CP 2 645810 8,2

5 PGB Copper Phos Alloys are amongst the highest quality in the market. Standard Qualiy Less Wetting More Porosity PGB Extra Quality More Wetting Less Porosity Our NEW Extra Quality out performs standard quality and can immediately reduce leaks and problems with brazing inconsistent gaps. Galflo CuP and CuPAg Alloys Item Ag Cu P Others Melting Range C Galflo Cu P ,2 BCup1 Galflo Cu P ,1 Galflo Cu P ,1 BCup2 Galflo Cu P 7 Sn Sn Galflo Cu P ,4 93, Galflo Cu P Ag ,5 6, Galflo Cu P Ag ,8 6,2 Galflo Cu P Ag ,8 6,2 Galflo Cu P Ag 5a 5 88,3 Galflo Cu P Ag Galflo Cu P Ag 15a 15 Galflo Cu P Ag Galflo Cu P Ag 0,4 OperDensity Tensile ating g/cm3 StrengTemp. C ht N/ mm2 AWS A5.8 EN 1044 DIN 8513 NFA BS 1845 CP 203 L Cu p6 CP 6 CP 202 L Cu p7 07B1 CP 3 CP 201 L Cu p8 08B1 8,1 8,1 CP B ,1 BCup6 CP 105 L Ag 2P 06B1 CP ,2 BCup3 CP 104 L Ag 5P 06B2 CP 4 6, ,2 BCup7 80,3 4, ,4 CP 102 CP 1 79,8 5, ,4 BCup5 CP 102 L Ag 15 P 05B ,6 CP B4 Note: The above table give standard compositions and technical informations. Additionally, we offer these alloys in varous forms and finishing processes. We offer extruded quality, drawn quality, and the FAMOUS PGB EXTRA Quality. (see the pictures at the top and bottom of this page.)

Copper to Steel Joining Copper to steel brazing can be a difficult process if the wrong materials are used. For this joint a strong flux is required, as often overheating of the steel occurs.

Additionally, the thermal expansion of both materials are different, this means that thermal stresses will be present. These two known problems are solved with Ga lflo Silver Alloys.

6 Copper to Steel Joining Copper to steel brazing can be a difficult process if the wrong materials are used. For this joint a strong flux is required, as often overheating of the steel occurs. The thermal higher conductivity of Cu combinded with the normally thick mass of steel cause makes it easier to over heat the steel. Additionally, the thermal expansion of both materials are different, this means that thermal stresses will be present. These two known problems are solved with Ga lflo Silver Alloys. PGB silver alloys conform to Rohs standards and REACH registered. Copper to Brass Joining Copper to brass brazing is generally easier than copper to steel, but more difficult that copper to copper joints. A flux is still required to insure perfect flow and wetting of both materials. Silver containing alloys are best fit for this kind of brazing. This type of joint general requries higher mechanical strength. Many times the joint gaps are large and leaks can occure. For this reason Galflo 34Snsi is often the best solution.

Ga l f o Silver Alloys (Cadmium Free and Rohs complaint upon request) Melting Range C Item Ag Cu Zn Sn Others Operating Temp C Density g/ cm3 Galflo 01 1 60 39 * 890900 900 8,3 350 Bronze Galflo 05 5

7 Ga l f o Silver Alloys (Cadmium Free and Rohs complaint upon request) Melting Range C Item Ag Cu Zn Sn Others Operating Temp C Density g/ cm3 Galflo * ,3 350 Bronze Galflo * ,4 350 Bronze Ag 208 LAg 5 05 A1 Galflo ,2% Si ,5 410 SPlus Ag 207 LAg 12 Galflo ,6 505 SPlus Galflo * ,7 330 SPlus Ag 206 LAg A1 Galflo ,8 420 SPlus Ag 205 LAg A1 Galflo 25 Sn ,7 420 SPlus B Ag 37 Ag 108 LAg 25Sn 25 A2 Galflo ,8 505 SPlus B Ag 20 Ag 204 LAg 30 Galflo 30 Sn ,9 460 SPlus Ag 107 LAg 30Sn AG21 Galflo ,9 535 SPlus Galflo 34 Sn SPlus Ag 106 LAg 34Sn Galflo SHT B Ag 35 Galflo 38 Sn ,8 430 SHT B Ag 34 Galflo 40 Ni Ni ,9 350 SHT B Ag 4 Galflo 40 Sn ,1 430 SHT B Ag 28 Ag 105 LAg 40Sn AG20 Galflo ,1 400 SHT AG5 Galflo ,2% Si ,1 545 SHT Ag 203 LAg A1 Galflo ,2 410 SHT B Ag 5 45 A2 Tensile Rec om AWS A5.8 EN 1044 Galflo 45 Sn ,2 350 XLT B Ag 36 Ag 104 DIN 8513 NFA BS 1845 LAg 45Sn Galflo 49 Ni Mn Mn 7,5 Ni 4, ,9 350 T XLT B Ag 22 Ag 502 LAg 49 AG18 Galflo 50 Ni Ni XLT B Ag 24 Galflo 55 Sn ,4 390 SLT Ag 103 LAg 55Sn AG14 Galflo 56 Sn ,5 410 SLT B Ag 7 Ag A1 Galflo 60 A Sn SLT B Ag A1 Galflo 60 Sn ,6 420 SLT Ag 101 LAg 60Sn Galflo ,6 400 SLT B Ag 9 Ag A1 Galflo SLT B Ag 8 Ag A1 AG7 Ga l Fl o Flux Coated Rods Are available in several ratios of flux coating for example: 10% Flux 12% Flux 15% Flux 20% Flux 25% Flux 30% Flux 35% Flux Consult your Pietro Galliani Salesman for help in selecting the right product for your applications.

Galflo Aluminium to Aluminium Joining Aluminium to Aluminium brazed with Galfux AlNc Paint and Galflo Al12 Alloy Brazing Al to Al can be very difficult and frustrating especially if your company is

Problem 1:Aluminium melts at the relatively low temperature of 660C and does not change colour when heated. This leads to very fast melting of the aluminium when trying to braze.

How it works:: Galflux Alnc is designed to be liquid at 560C, this is just below the temperature of the market standard brazing alloys Galflo Al12, this alloys the brazer to see when he needs to

Aluminium to Aluminium brazed with Galfux AlNc Paste and Galflo Al12 Alloy Galflux Alcor For Joining AlMg alloys Aluminium to Copper brazed with Galfux ZNnc Paste and Galflo ZnAl2 Alloy Problem 2: In

8 Galflo Aluminium to Aluminium Joining Aluminium to Aluminium brazed with Galfux AlNc Paint and Galflo Al12 Alloy Brazing Al to Al can be very difficult and frustrating especially if your company is making the transition from copper brazing to aluminium brazing. Pietro Galliani Brazing S.p.A has developed several products to make aluminium joining easier. Problem 1:Aluminium melts at the relatively low temperature of 660C and does not change colour when heated. This leads to very fast melting of the aluminium when trying to braze. PGB Solution 1: Galffux ALnc is a not corrosive flux paste that works as a temperature indicator. How it works:: Galflux Alnc is designed to be liquid at 560C, this is just below the temperature of the market standard brazing alloys Galflo Al12, this alloys the brazer to see when he needs to apply the alloy and reduces the heat input. Aluminium to Aluminium brazed with Galfux AlNc Paste and Galflo Al12 Alloy Galflux Alcor For Joining AlMg alloys Aluminium to Copper brazed with Galfux ZNnc Paste and Galflo ZnAl2 Alloy Problem 2: In order to increase the strenght of Al alloys Mg is added. If the Mg content is too high normal noncorrosive fluxes no longer function correctly. PGB Solution 2: Galflux AlNcExtra is a non corrosive flux paste that can be used to braze AlMg alloys with up to 1,2% of Mg, above 1.2%Mg a corrosive flux must be used. We recommend Galflux AlcorExtra. Aluminium to Copper brazed with Galfux ZNnc paste and Galflo ZnAl22 Alloy Galflo Aluminium to Copper Joining Brazing Aluminium to Copper is often more difficult to join than aluminium to aluminium. Pietro Galliani Brazing S.p.A has developed several products to make aluminium to copper joining easier. Problem 3: Copper and Alumiumiun have different thermal conductivity which makes controlling the temperature of both materials difficult. This often leads to over heating of the copper and results in melting of the aluminium. PGB Solution 3: Galflux Znnc is a non corrosive flux paste that is active at 440C. When used with Galflo ZnAl2, or Galflo ZnAl15, a perfect CuAl joint can be achieved.

9 GalFlo Aluminium Joining Alloys Item Al Si Zn Cu Others Melting Range C Operating Temp C Galflo AlSi Galflo ZnAl Galflo ZnAl Galflo ZnAl GalFlux Aluminium Joining Fluxes Item Melting Range C Operating Temp C Galflux Alnc Galflux AlncExtra Galflux Alcor Galflux ZnNc Application NonCorrosive Fllux for use with Galflo AlSi12, active on materials with less than.5% Mg NonCorrosive flux designed to work with Galflo AlSi12 on materials with.51,2% Mg Corrosive Flux for use with Galflo AlSi12, where flux residues must be removed or where Mg content is over 1,2% NonCorrosive Aluminium Flux for use with Galflo ZnAl2, ZnAl15, ZnAl22

10 KEEP YOUR FACTORY SAFE!!! Pietro Galliani Brazing S.p.A Presents: NonToxic and NonCorrosive Gas Flux NO MORE TOXIC PRODUCTS IN OUR FACTORIES

11 GalFlux GF ECO Item Melting Range C Operating Temp C Description Galflux GF ECO High Concentration Flux Galflux GF ECO % Concentrage Flux Galflux GF ECO % Concentration Flux Galflux GF Standard Methanol Based flux 70% strenght GalFlo Brass Alloys (Commonly used with GF ECo ) Item Cu Zn Ni Si Others Melting Range C Galflo OT Ni 10 Galflo OT Ni 4,4 Galflo OT Ni ,8 10 0, ,4 0,2 Mn0, ,3 6,3 0,2 Mn0, Galflo OT Si 59,5 40,25 0, Galflo OT Si Mn 59 39,25 0,15 Mn0,8 Sn0,8 Operating Temp. C Density g/cm3 Tensile Strenght N/ mm2 Recommended Flux AWS A ,7 480 BRONZE RB CuZn D EN 1044 Cu 305 DIN 8513 BS 1845 NFA LCu CZ 8 49 C BRONZE BRONZE 900 8,4 370 BRONZE Cu ,4 380 BRONZE RB CuZnC Cu 306 LCu Zn 40 LCu Zn 39 Sn CZ6 CZ 7A 60C1 60C2

12 TM Pietro Galliani Brazing S.p.A Vergato, Bologna, Italy telephone: fax:

METALES DE APORTACION, S.A.

METALES DE APORTACION, S.A. Carretera General s/n, 39792-Gajano (Cantabria) SPAIN BRAZING ALLOYS AND FLUXES Medasa, Metales de Aportación, S.A. - 2014 Electronic version to unload from www.medasa.com Introduction