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Brazing Alloys

Brazing Alloys

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Brazing alloys can be divided in different families, and there are many conditions to make the right choice. It is hard to say which is the best alloy to use; usually the right choice is the most common one. There is some time an uncommon choice, an alternative that can became very interesting.

Here you can find a quick ref. table, the alloys are divided into families, if you are looking for furnace brazing  alloys you can check in this page

Brazing Alloys 

Silver Brazing Alloys

code

Composition and Designation
ISO 3677

Brazing temperature

EN 1044

ISO 17672

typical use

tensile strength

(Mpa)

T28

B-Cu55ZnAg 820/870

890

AG 208

AG 205

double brazing,

Fe/Fe Fe/Cu

350

T29

B-Cu48ZnAg- 800/830

850

AG 207

AG 212

handpunches, double brazing, Fe/Fe Fe/Cu

412

T68

B-Cu45ZnAg- 690/795

810

AG 206

-

handpunches, double brazing, Fe/Fe Fe/Cu

380/430

T77

B-Cu40ZnAg- 700/790

780

AG 205

AG 225

Medium high temperature good fluidity

380/430

T77S

B-Cu40ZnAgSn- 680/760

750

AG 108

AG 125

Medium high temperature good fluidity

360/480

T79

B-Cu38ZnAg- 680/765

750

AG 204

AG 230

Medium high temperature good fluidity

380/430

T79S

B-Cu36ZnAgSn- 650/750

740

AG 107

AG 130

Medium high temperature good fluidity

360/480

T80S

B-Cu36AgZnSn- 630/730

710

AG 106

AG 134

Medium high temperature good fluidity

360/480

T90S

B-Ag40CuZnSn- 640/700

690

AG 105

AG 140

Medium temperature excelent fluidity

350/430

T97

B-Ag44CuZn- 680/740

730

AG 203

AG 244

Medium temperature excellent fluidity

400/480

T96S

B-Ag45CuZnSn- 640/680

670

AG 104

AG 145

Medium temperature excellent fluidity

350/430

T99S

B-Ag55CuZnSn- 630/660

660

AG 103

AG 155

low temperature excellent fluidity

350/430

T99

BAg52CuZnSn- 620/650

650

AG 102

AG 156

low temperature excellent fluidity

350/430

T600

B-Ag60CuZn 695/730

730

AG 202

-

high silver contain, goldsmith industry

T700

B-Ag67CuZn 690/740

740

-

high silver contain, goldsmith industry

T720

B-Ag72Cu 780

780

AG 401

AG 272

eutectic furnace brazing

380/390

T750

B-Ag74CuZn 740/780

790

goldsmith industry

T500

B-Ag49ZnCuMnNi 625/705

705

AG 502

AG 449

tools, hard metal

380/470

T530

B- Ag49CuZnMn(N) 670/690

690

-

AG 450

tools, hard metal

300

Trimetallico Z

B- Ag49CuZnMn(N) 670/690

690

-

tools, hard metal

150/300

Brass alloys

code

Composition and Designation
ISO 3677

brazing temperature

EN 1044

ISO 17672

typical use

tensile strength

(Mpa)

S21

B-Cu59Zn(Si) 860//900

900

CU 301

CU 470a

Fe/Fe Fe/Cu

350

SM23

B-Cu59ZnSn(Mn) – 880/900

900

Fe/Fe Fe/Cu excellence whit flux flame flux

380/420

ST22

B-Cu59ZnSn(Si) – 800/840

900

-

Fe/Fe Fe/Cu excellent whit flux flame flux,better fluidity

380/420

SN32

B-Cu57ZnNi(Si) – 860/910

950

Fe/Fe excellent whit flux flame flux, improves the tensile strength

650

SN34

B-Cu51ZnNi(Si) – 900/930

950

Cu 773

Fe/Fe excellent whit flux flame flux, improves the tensile strength

700

SN36

B-Cu50ZnNi(Si) – 890/920

950

CU 305

Cu 773

Fe/Fe excellent whit flux flame flux, improves the tensile strength

690

Copper Phis alloys

code

Composition and Designation
ISO 3677

Brazing tempertute

EN 1044

ISO 17672

typical applications

tensile strength

(Mpa)

FH51

B-Cu94P 710/880

760

CP 203

CuP 179

Cu/ Cu brazing, air condition, heater exchange

250

FH52

B-Cu93P 714/820

730

CP 202

CuP 180

250

FH49

B-Cu93P 710/750

720

CP 201

CuP 181

250

FH50

B-Cu92P 710/740

720

CP 201

CuP 182

250

FH55

B- Cu86PSn650/700

700

CP 302

CuP 386

250

FH47

B-Cu93P(Ag) 650/810

-

250

FH48

B-Cu92PAg 650/810

740

CP 105

CuP 279

250

FH45

B-Cu89PAg 650/810

710

CP 104

CuP 281

250

FH46

B-Cu87PAg 643/813

-

CuP 283

250

FH35

B-Cu80AgP 650/800

700

CP 102

CuP 284

electric contacts, air condition, heater exchange

250

FH32

B-Cu75AgP 645/670

650

CP 101

CuP 286

electric contacts, air condition, heater exchangee

250

Aluminum alloys

code

Composition and Designation
ISO 3677

brazing

temperature

EN 1044

ISO 17672

typical applications

tensile strength

(Mpa)

ALL95

B-Al95Si 566/630

AL101

AL105

Al/Al brazing

170/210

ALL87

B-Al88Si 577/582

AL104

AL112

100

ALL MG5

B-Al95Mg(Si) 566/650

-

Al/Al brazingi or welding

ALL99

B-Al99(Si) 660

-

Saldatura tig alluminio

ALL84S

B-Zn72Al 397/483

-

Al/Al brazing orAl/Cu brazing

ALL86S

B-Al90Si 575/590

AL103

AL110

170/210

Silver Brazing Alloys

code

Composition and Designation
ISO 3677

EN 1044

ISO 17672

tensile strength

(Mpa)

T28

B-Cu55ZnAg 820/870

AG 208

AG 205

350

T29

B-Cu48ZnAg- 800/830

AG 207

AG 212

412

T68

B-Cu45ZnAg- 690/795

AG 206

-

380/430

T77

B-Cu40ZnAg- 700/790

AG 205

AG 225

380/430

T77S

B-Cu40ZnAgSn- 680/760

AG 108

AG 125

360/480

T79

B-Cu38ZnAg- 680/765

AG 204

AG 230

380/430

T79S

B-Cu36ZnAgSn- 650/750

AG 107

AG 130

360/480

T80S

B-Cu36AgZnSn- 630/730

AG 106

AG 134

360/480

T90S

B-Ag40CuZnSn- 640/700

AG 105

AG 140

350/430

T97

B-Ag44CuZn- 680/740

AG 203

AG 244

400/480

T96S

B-Ag45CuZnSn- 640/680

AG 104

AG 145

350/430

T99S

B-Ag55CuZnSn- 630/660

AG 103

AG 155

350/430

T99

BAg52CuZnSn- 620/650

AG 102

AG 156

350/430

T600

B-Ag60CuZn 695/730

AG 202

-

T700

B-Ag67CuZn 690/740

-

T720

B-Ag72Cu 780

AG 401

AG 272

380/390

T750

B-Ag74CuZn 740/780

T500

B-Ag49ZnCuMnNi 625/705

AG 502

AG 449

380/470

T530

B- Ag49CuZnMn(N) 670/690

-

AG 450

300

Trimetallico Z

B- Ag49CuZnMn(N) 670/690

-

150/300

Brass alloys

code

Composition and Designation
ISO 3677

EN 1044

ISO 17672

tensile strength

(Mpa)

S21

B-Cu59Zn(Si) 860//900

CU 301

CU 470a

350

SM23

B-Cu59ZnSn(Mn) – 880/900

380/420

ST22

B-Cu59ZnSn(Si) – 800/840

-

380/420

SN32

B-Cu57ZnNi(Si) – 860/910

650

SN34

B-Cu51ZnNi(Si) – 900/930

Cu 773

700

SN36

B-Cu50ZnNi(Si) – 890/920

CU 305

Cu 773

690

Copper Phis alloys

code

Composition and Designation
ISO 3677

EN 1044

ISO 17672

tensile strength

(Mpa)

FH51

B-Cu94P 710/880

CP 203

CuP 179

250

FH52

B-Cu93P 714/820

CP 202

CuP 180

250

FH49

B-Cu93P 710/750

CP 201

CuP 181

250

FH50

B-Cu92P 710/740

CP 201

CuP 182

250

FH55

B- Cu86PSn650/700

CP 302

CuP 386

250

FH47

B-Cu93P(Ag) 650/810

-

250

FH48

B-Cu92PAg 650/810

CP 105

CuP 279

250

FH45

B-Cu89PAg 650/810

CP 104

CuP 281

250

FH46

B-Cu87PAg 643/813

-

CuP 283

250

FH35

B-Cu80AgP 650/800

CP 102

CuP 284

250

FH32

B-Cu75AgP 645/670

CP 101

CuP 286

250

Aluminum alloys

code

Composition and Designation
ISO 3677

EN 1044

ISO 17672

tensile strength

(Mpa)

ALL95

B-Al95Si 566/630

AL101

AL105

170/210

ALL87

B-Al88Si 577/582

AL104

AL112

100

ALL MG5

B-Al95Mg(Si) 566/650

-

ALL99

B-Al99(Si) 660

-

ALL84S

B-Zn72Al 397/483

-

ALL86S

B-Al90Si 575/590

AL103

AL110

170/210