ALUMINIUM BRAZING

May 11, 2019

ALUMINIUM BRAZING

CONSUMABLES, ACCESSORIES, EQUIPMENT AND MACHINERY

Aluminum brazing applications to join Aluminum to Aluminum, Aluminum to Copper and its alloys, Aluminum to Steel are continuously increasing.
STELLA offers the most complete range of Aluminum Brazing Filler Metals and Fluxes required by modern techniques: massive rods and wires, flux-cored and flux-grooved rods
and wires, rings, pastes and powders.
If you already use these techniques, ask for the materials you are interested in.
If you do not use these techniques or if you want to know more, submit us the cases of your interest!
Our specialists will be happy to suggest you the most suitable techniques for your case, the necessary consumables and accessories, equipments and machinery.


OTHERS

OTHERS

Code Composition % Standard
Ni C Mn Si Cr Fe Nb Mo Ti Cu Co Va W Al AWS A5.14 DIN 8573

Nickel Alloys

NiCr-3 Bal <0.02 3.2 0.2 20.5 0.2 2.7 ER NiCr-3
NiCrMo-3 ≥55 0.1 1 0.75 21.5 7 3.5 9 0.5 ER NiCrMo-3
NiCrMo-4 Bal 0.02 1 0.2 15.5 5.5 16 0.5 2.5 0.35 4 ER NiCrMo-4
NiCrMo-10 Bal 0.02 1 0.2 21 4 13.5 0.5 2.5 0.35 3 ER NiCrMo-10
NiCu-7 65 0.15 4 1.5 2.5 1 Bal 0.75 ER NiCu-7
Ni-1 ≥92 0.1 0.75 1.25 0.75 2.5 0.25 1 ER Ni-1

Cast Iron

FeC 0.5 3.3 0.6 3.2 Bal 0.1 G FeC-1

Make-up
Rods Ø; 1 ÷ 3,2 mm Length: 1.000 mm
Wires Ø: 0,8 ÷ 2,4 mm On Spools DIN 300


STAINLESS STEEL

STAINLESS STEEL

Stainless steel rods and wires for TIG / MIG techniques.

Code Composition % (single value means max value) Standard Description
C Si Mn Cr Ni Mo Cu Werkstoff Nr. EN 12072 AWS A5.9

Stainless Steel

307 0.04-0.14 0.65 3.3-4.8 19.5-22 8-10.7 0.5-1.5 0.75 1.4370 ER 307
308 L 0.03 0.65 1-2.5 19-21 9-11 0.3 0.3 1.4316 19 9 L ER 308 L
308 Si 0.08 0.65-1 1-2.5 19.5-22 9-11 0.75 0.75 ER 308 Si
308 LSi 0.03 0.65-1.2 1-2.5 19-21 9-11 0.3 0.3 (1.4316) 19 9 L Si ER 308 L Si
309 L 0.03 0.65 1-2.5 22-25 11-14 0.3 0.3 1.4332 23 12 L ER 309 L
309 LSi 0.03 0.65-1.2 1-2.5 22-25 11-14 0.3 0.3 (1.4332) 23 12 L Si ER 309 L Si
309 LMo 0.03 1 1-2.5 21-25 11-15.5 2-3.5 0.3 23 12 2 L ER 309 L Mo
310 0.08-0.15 2 1-2.5 24-27 18-22 0.3 0.3 1.4842 25 20 ER 310
312 0.15 1 1-2.5 28-32 8-12 0.3 0.3 1.4337 29 9 ER 312
316 0.08 0.3-0.65 1-2.5 18-20 11-14 2-3 0.75 ER 316
316 L 0.03 0.65 1-2.5 18-20 11-14 2.5-3 0.3 1.4430 19 12 3 L ER 316 L
316 LSi 0.03 0.65-1.2 1-2.5 118-20 11-14 2.5-3 0.3 (1.4430) 19 12 3 L Si ER 316 L Si
317 L 0.03 0.65 1-2.5 18.5-20.5 13-15 3-4 0.75 (18 15 3 L) ER 317 L
318 0.08 0.65 1-2.5 18-20 11-14 2.5-3 0.3 1.4576 19 12 3 Nb ER 318 10 x C to 1,0
347 Si 0.08 0.65-1.2 1-2.5 19-21 9-11 0.3 1.3 (1.4551) 19 9 Nb Si ER 347 Si 10 x C to 1,0
410 NiMo 0.06 0.5 0.6 11-12.5 4-5 0.4-0.7 0.75 ER 410 NiMo

Make-up
Rods Ø; 1 ÷ 3,2 mm Length: 1.000 mm
Wires Ø: 0,8 ÷ 2,4 mm On Spools DIN 300


LOW ALLOYED STEEL WELDING WIRE

LOW ALLOYED STEEL WELDING WIRE

Low alloyed steels for gas welding and for the TIG / MIG techniques.

Code Composition % Tensile strength Standard
C Si Mn Mo Cr Ni V Cu kg/mm2 DIN 8554 EN 12536 DIN 8559 EN AWS A5.2 AWS A5.28

Autogenous Welding Wire

G I 0.08 0.1 0.5 38 G I 0 – I R45
G II 0.15 0.2 0.9 42 G II 0 – II R60
G III 0.09 0.1 1.1 0.4 44 G III 0 – III R60-G
G IV 0.13 0.15 1 0.5 48 G IV 0 – IV

Mild Steel Wire – MIG/MAG – TIG

SG 1 0.06-0.14 0.5-0.8 0.9-1.3 46 SG 1 ER-70 S3
SG 2 0.06-0.14 0.7-0.8 1.3-1.6 56 SG 2 ER-70 S6
SG 3 0.06-0.14 0.8-1.2 1.6-1.9 58 SG 3 ER-70 S6
80 S 0.1 0.5 1.1 0.9 0.4 58 Mn3Ni1Cu (ER-80 S)
80 SG 0.1 0.6 1.1 0.5 62 G/W MoSi ER-80 S-G
80 SG Ni 0.09 0.6 1.4 0.9 ≤ 0,4 61 G3 Ni1 ER-80 S-G
80 SG NiCr 0.08 0.6 1.3 0.2 0.8 ≤ 0.4 59 ~ G3 Ni1 ER-80 S-G
80 SB2 0.1 0.6 1.1 0.5 1.1 64 G/W CrMo1Si ER-80 S-B2
80 SB3 0.07 0.7 1.1 1 2.8 64 G/W CrMo2Si ER-80 S-B3
90 SG 0.08 0.6 1.8 0.3 0.9 65-80 Mn3Ni1Mo ER-90 S-G
90 SB3 0.08 0.6 0.65 1 2.5 59 ER-90 S-B3
100 SG 0.09 0.7 1.7 0.3 0.6 0.5 0.3 70 Mn3NiCrMo ER-100 S-G
110 SG 0.1 0.6 1.7 0.25 0.3 1.5 0.1 77 Mn3Ni1CrMo ER-110 S-G
120 SG 0.1 0.8 1.8 0.6 0.35 2.25 94 Mn4Ni2CrMo ER-120 S-G

Make-up
Rods Ø; 1 ÷ 6 mm Lenght: 1.000 mm
Wires Ø: 0,8 ÷ 2,4 mm On Spools DIN 300


COPPER ALLOYS FOR WELDING

COPPER ALLOYS FOR WELDING

Alloys based on copper suitable for the TIG / MIG techniques.
Supplied as rods and wires, some alloys are also suitable for the brazing technique

Code Composition % Melting Range SOL-LIQ Density Tensile strength Brinell hardness Standard Description Pdf
Cu Fe Ag Ni Al Mn Sn Si P Ti °C g/cm3 kg/mm2 HB 2,5 DIN 1733 AWS A5.7

Copper Alloys for Welding

Cu99,9 99.9 0.05 1080 8.9 22 50 ERCu SF-Cu (DIN 1787)
CuSn Bal x 0.8 x 1020-1050 8.9 22 60 SG-CuSn
CuAg Bal 1 x 1070-1080 8.9 20 60 SG-CuAg
CuSi2Mn Bal 1 x 1.8 1030-1050 8.7 28 62
CuSi3 Bal 1 3 965-1035 8.5 35 80 SG-CuSi3 ERCuSi-A
CuSn6 Bal 6 0.25 910-1040 8.7 26 80 SG-CuSn6 ERCuSn-a
CuSn8 Bal 8 0.1 875-1025 8.8 26 80 SG-CuSn6 ERCuSn-C
CuSn12 Bal 13 0.2 825-990 8.6 32 120 SG-CuSn12
CuAl8 Bal 8 1030-1040 7.7 43 100 SG-CuAl8 ERCuAl-A1
CuAl8Ni2 Bal 2 2 8 1030-1050 7.5 53 140 SG-CuAl8Ni2
CuAl9Fe Bal 1.2 9.5 1030-1040 7.6 50 140 SG-CuAl10Fe ERCuAl-A2
CuMn13Al8 Bal 2.5 2.5 8 945-985 7.4 90 290 SG-CuMn13Al7 ERCuMnNiAl
CuNi10Fe Bal 1.5 10.5 0.4 1100-1145 8.9 30 80 SG-CuNi10Fe
CuNi30Fe Bal 0.5 31 0.4 1180-1240 8.9 42 115 SG-CuNi30Fe ERCuNi

Make-up
Rods Ø; 1
÷
6 mm
Length: 1.000 mm
Wires Ø: 0.8
÷
2.4 mm
On Spools DIN 300, DIN 200 and DIN 100
Strips
Rings
Preforms from Wire and from Strip


ALUMINIUM AND MAGNESIUM ALLOYS FOR WELDING

ALUMINIUM AND MAGNESIUM ALLOYS FOR WELDING

Alloys based on Aluminium and Magnesium suitable for the TIG/MIG techniques.
Used to join aluminium and magnesium based metals
Some alloys are also suitable for the Brazing technique.

Code Composition % Standard Description Pdf
Al Si Mg Mn Zn Zr DIN 1732 AWS A5.10

Aluminiumalloys

Al99,8 99,8 SG-Al99,8 1080
Al99,5 99,5 SG-Al99,5 1050
Al99,5 FC 99,5 SG-Al99,5 1050

Aluminium-Silicon alloys

AlSi5 Bal 5 SG-AlSi5 4043
AlSi5 FC Bal 4 ~ SG-AlSi5 ~ 4043
AlSi12 Bal 12 SG-AlSi12 4047

Aluminium-Magnesiumalloys

AlMg4,5Mn Bal 0.2 4.5 0.5-1 SG-AlMg4,5Mn 5183
AlMg4,5MnZr Bal <0.4 4.5-5.2 0.7-1.1 <0.25 0.1-0.2 SG-AlMg4,5MnZr 5087
AlMg5 Bal 0.2 5 0.05-2 SG-AlMg5 5356
AlMg5Mn Bal 0.3 5 0.6-1 SG-AlMg5 5556
AlMg3 Bal 0.4 3 0.5 SG-AlMg3 5754

Magnesium

MgAl6Zn 6 Bal 1 AZ61A (AWS A5.19)
MgAl9Zn 9 Bal 2 AZ92A (AWS A5.19)

Make-up
Rods Ø; 1,2 ÷ 5 mm Length: 1.000 mm
Wires Ø: 0,8 ÷ 3,2 mm On Spools DIN 300, DIN 200 and DIN 100
Flux-cored rods & wires Ø: 2 ÷ 5 mm Only Al99,5 – AlSi5 – AlSi12
Rings


POWDERS AND PASTES

POWDERS AND PASTES

A wide range of filler metals in powder and paste is available.
Brazing is performed in air, under protective atmosphere, or in vacuum, by flame, induction or in furnace.
Powders are available in different grain sizes, from coarse to fine.
Pastes can be supplied with and without flux, with various binders and with different metal content percentages, in order to
fulfill the most demanding applications.
To select the most appropriate brazing paste, many factors have to be taken into account, such as: type and dimensions of
pieces, materials to be joined, heating method, type of atmosphere, etc.
Consequently technical testing is generally required to select the most appropriate paste for the specific customer application.

SELECTION CHART

AVAILABLE ALLOYS AVAILABLE MAKE UP
SILVER BASED ALLOYS
Ag-Cu; Ag-Cu-Sn;

Ag-Cu-Zn; Ag-Cu-Zn-Sn;
Ag-Cu-Zn-Ni;
Ag-Cu-Zn-Mn-Ni

Powder Paste
Torch Induction Furnace
ACTIVE BRAZING ALLOYS
Ag-Cu-Ti; Ni1; Ni1a; Ni2 Powder Paste
Induction Furnace

COPPER-PHOSPHOROUS ALLOYS

Cu-P; Cu-P-Sn; Ag-Cu-P Powder Paste
Torch Induction Furnace

COPPER

Cu  – Paste
 –  – Furnace

BRONZE

CuSn6 – CuSn8 – CuSn12 Powder Paste
 –  – Furnace

COPPER BASED

Cu-Zn; Cu-Zn-Ni; Cu-Mn-Ni Powder Paste
Torch Induction Furnace

ALUMINIUM

Al-Si; Al-Zn Powder Paste
Torch Induction Furnace

SOFT SOLDERS

Sn; Ag-Sn; Sn-Cu; Sn-Pb Powder Paste, with following flux types:
3.1.1.C (general purpose)
2.1.2.C (for aluminium)
1.1.2 (colophony)


ALUMINIUM AND ZINC-ALUMINIUM ALLOYS

ALUMINIUM AND ZINC-ALUMINIUM ALLOYS

Alloys based on Aluminium and/or Zinc for brazing of Aluminium.
Continuous service operating temperatures of joints brazed with Al/Si alloys range up to approx 150 °C.
Zinc-Aluminum alloys are also suitable for copper-aluminium and brass-aluminium joints.

Code Composition % Melting Range SOL-LIQ Standard Pdf
Al Si Mg Mn Zn °C ISO 17672 EN 1044 AWS A5.8

Aluminum alloys

Al99,5 99,5 647-658 SG-Al99,5 (DIN 1732) 1050 (AWS A5.10)
Al995 FC 99,5 647-658 SG-Al99,5 (DIN 1732) 1050 (AWS A5.10)

Aluminum-Silicon alloys

AlSi5 Bal 5 575-630 Al 105 AL 101 4043 (AWS A5.10)
AlSi5 FC Bal 4 575-630 ~ Al 105 ~ AL 101 ~ 4043 (AWS A5.10)
AlSi12 Bal 12 575-585 Al 112 AL104 BAlSi-4

Zinc-Aluminum alloys

AlZn98 2 98 380-405
AlZn98 FC-NC 2 98 380-405
AlZn78 22 78 441-471

Make-up
Rods Ø; 1,6 ÷ 5 mm Length: 500 / 1.000 mm
Wires Ø: 0,8 ÷ 3,2 mm On Spools DIN 300 and DIN 100
Flux-cored rods & wires Ø: 2 ÷ 5 mm
Flux-grooved rods & wires Ø: 1,6 ÷ 2 mm Only AlSi12 – AlZn98 – AlZn78
Powder and Paste AlSi12 – AlZn98
Rings


SILVER BRAZING ALLOYS CADMIUM BEARING

SILVER BRAZING ALLOYS CADMIUM BEARING

The brazing alloys presented in this page are very versatile, high-strength, free-flowing and exhibit the lowest melting points of all silver based alloys.
They can be used to join a wide range of base materials.
Continuous service operating temperatures of jointas brazed with these lloys range up to approx 200°C.
Because of the presence of Zinc and Cadmium, and the possible failure of the joint due to the mechanism of interfacial corrosion, these alloys are not recommended for the joining of steinless steels in wet conditions; in these conditions, Zinc free and Cadmium free alloys, or alloys with Nickel additions are preferred: see Silver Brazing Alloys – Special Applications.
Since Cadmium and its oxides are toxic, special safety precautions must be followed during brazing operations (e.g. mechanical ventilation and/or respiratory mask).
The use of these alloys in applications where food, beverages and/or human health in general is involved, is forbidden.

CADMIUM BEARING BRAZING ALLOYS HAVE BEEN BANNED IN THE EUROPEAN UNION SINCE DECEMBER 2011 (EU COMMISSION REGULATION NO. 494/2011) AND THEIR USAGE IS NO MORE ALLOWED: PLEASE CONTACT OUR TECHNICAL AND COMMERCIAL STAFF TO GET AN ADVICE ON SELECTING THE MOST APPROPRIATE CADMIUM-FREE SUBSTITUTES.
SEE OUR RECOMMENDED ALTERNATIVES.

Code Composition % Melting Range SOL-LIQ Density Tensile strength Standard Description
Ag Cu Zn Cd Si Ni °C g/cm3 kg/mm2 ISO 17672 EN 1044 AWS A5.8

Silver based alloys

Ag50CdNi 50 15,5 15,5 16 3 635-655 9,5 45 Ag 351 AG 351 BAg-3
Ag50Cd 50 15,5 16,5 18 625-635 9,5 43 Ag 350 AG 301 BAg-1a
Ag45Cd 45 15 16 24 605-620 9,4 43 Ag 345 AG 302 BAg-1
Ag42Cd 42 17 16 25 605-620 9,4 42 AG 303
Ag40Cd 40 19 21 20 595-630 9,3 42 Ag340 AG 304
Ag38Cd 38 20 22 20 610-650 9,2 40
Ag34Cd 34 22 24 20 610-670 9,1 40 ~ Ag 335 ~ AG 305 ~ BAg-2
Ag30Cd 30 28 21 21 600-690 9,1 38 Ag 330 AG 306 ~ BAg-2a
Ag25Cd 25 30 27,5 17,5 605-720 8,8 40 Ag 326 AG 307 BAg-33
Ag21Cd 21 35 27 17 0,5 620-730 8,7 42 AG 308
Ag20Cd 20 40 25 15 620-750 8,7 40 AG 309
Ag19Cd 19 39 28 14 630-730 8,8 40
Ag17Cd 17 41 26 16 620-760 8,7 42
Ag13Cd 13 44 33 10 605-795 8,7 42

Make-up
Rods Ø; 0,5 ÷ 4 mm Length: 500 / 1.000 mm
Coated rods Ø: 1,5 – 2 – 2,5 – 3 mm Length: 500 mm / Different kinds of coating available in various colours
Wires Ø: 0,25 ÷ 3 mm Coils and spools
Strips Thickness: 0,1 ÷ 1 mm Width: 1,3 → 80 mm
Powder and Paste
Rings
Preforms from Wire and from Strip


BRASS AND HIGH TEMPERATURE BRAZING ALLOYS

BRASS AND HIGH TEMPERATURE BRAZING ALLOYS

This group includes four different categories of high-temp brazing alloys:

  • General Purpose Brasses
  • Brasses with addition of Nickel
  • High temperature Copper Alloys for special applications
  • Copper for furnace brazing

All these alloys are economical to use and can be generally supplied in a variety of forms (rods, wires, strips, preforms, powder and pastes). General purpose brasses can be used for brazing and for the Oxy-Fuel Gas Braze-Welding process, with liquid flux spread through the torch flame.

Code Composition % Melting Range SOL-LIQ Density Tensile strength Standard Pdf
Cu Zn Ag Ni Mn Sn Si B Co P °C g/cm3 kg/mm2 ISO 17672 EN 1044 AWS A5.8

General purpose Brasses

Cu60Zn 60 Bal 0,3 875-895 8,4 40 Cu 470a CU 301
Cu59ZnSn 59 Bal 0,4 0,3 875-895 8,4 45 Cu 470 CU 302 RBCuZn-A
Cu59ZnSnMn 59 Bal 0,7 0,4 0,3 870-890 8,4 45 ~ Cu 471 ~ CU 304 ~ RBCuZn-C
Cu59ZnAg 59 Bal 1 0,1 0,1 0,1 860-890 8,4 45

Brasses with Nickel

Cu48ZnNi10 48 Bal 10 0,3 890-920 8,7 54 Cu 773 CU 305 RBCuZn-D
Cu48ZnNi9Ag 48 Bal 1 9 0,2 890-920 8,7 54
Cu53ZnNi6 53 Bal 6 0,2 900-920 8,5 49

Copper alloys for high temperature

Cu97Ni3B 97 3 0.03 1085-1100 Cu 186 CU 105
Cu87MnCo3 87 10 3 980-1030 8,7
Cu86MnNi2 86 2 12 960-990 8,8 Cu 595
Cu85MnNi3 85 3 12 960-990 8,8 Cu 595
Cu67MnNi9 67 9 24 950-955 8,2
Cu58ZnMnCo2 57,5 Bal 2 2 880-930 8,2
Cu55ZnMn4Ni6 55 Bal 6 4 0.3 880-920 8,9
CuMn38Ni9,5 52,2 9,5 38 880-925 7,7

Copper (furnace brazing)

OF-Cu 99,95 1085 8,9 Cu 102 CU 102 BCu-3
ETP-Cu 99.90 1085 8,9 Cu 110 CU 101 BCu-1b
DHP-Cu Bal. <0.07 1085 8,9 Cu 141 ~ CU 104 BCu-1

Make-up
Rods Ø; 1,5
÷
10 mm
Length: 500 / 1.000 mm
Coated rods Ø: 1,5 – 2 – 2,5 – 3 – 4 mm Length: 500 mm / Different kinds of coating available in various colours
Micro coated Rods Ø: 2 – 2,5 – 3 mm Length: 500 mm
Wires Ø: 1
÷
6 mm
Coils and spools
Strips Thickness: 0,2
÷
1 mm
Width: 1,3 → 70 mm
Powder and Paste
Rings
Preforms from Wire and from Strip