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WILLIAMS Advanced Materials 

 Williams Advanced Materials

INTEGRATED SOLUTION 

Williams offers a wide range of solder alloys. Virtually hundreds of alloys and shapes are available.
The alloying and tooling possibilities are endless at Williams.

bullet Extensive tooling library and in-house tooling capabilities
bullet State-of-the-Art Analytical Capabilities
bullet ISO 9002 Certified

SOLDER ALLOYS 

For over 80 years, Williams has been a leader in the fabrication and refining of precious metal alloys, including a variety of low temperature lead free solder solutions.  Today, Williams has the most advanced technology available, integrated directly within our manufacturing facilities.   Our extensive offering of Alloys are cast and fabricated to meet the exacting standards of various micro electronics applications. Custom Alloys can be formulated and manufactured according to your application temperature.
All of our alloys are available in a variety of shapes and forms, including ribbon, preforms, rod, ring and wire.  Custom shapes can also be manufactured using our state-of-the-art design and fabrication equipment.

SOLDER PREFORMS, RIBBON & WIRE 

Spec Analysis, large open tooling library, and over 30 years of material science support our Solder Preforms and Ribbon product lines. The dimensional possibilities are endless! Over the years Williams has assembled a library of over 8,000 tools - built and maintained by our in-house tool and die shop; perfected machining processes for special shapes; and devised very accurate adjustable tools for low volume requests. Solder Preforms are available in: squares, rectangles, discs, washers, and frames with standard thicknesses from 0.001" to widths up to 4.500. Wall width of washers and frames will have an effect on the thickness availability. Ribbon thickness ranges from 0.001 (+0.000/-0.0002) and up based on the width that ranges from 0.015 to 4.500. For special shapes solder preforms, let us review your drawing to give individual consideration to radius and wall thickness in relationship to overall thickness. Solder Preforms, Ribbon and Wire are available in the below materials list.

SHAPED WIRE/TURKSHEAD 

In-house: alloying, analytical lab and materials science experts support our wire and Turkshead offerings. Turkshead is unique square and rectangular formed wire used in the electronics industry as an inlay within strip material, which in turn is stamped and formed for contacts. Unlike most manufacturers, Williams has the ability to produce Turkshead in long lengths. Call us to discuss your specific size needs. Shaped Wire and Turkshead is available in the below materials list.

 Note: Lead Free Solder Preforms are highlighted in the chart below.
WAM
Solder
 
Nominal
Composition

Solidus

Liquidus

Density
(g/cc) 

Electrical
Conductivity
(% of IACS)

Thermal Conductivity (W/m*C)

Thermal Coefficient of Expansion
(Micro in/in/C) (20C)

Tensile Strength (psi)

oF oC oF oC
WS96

30Pb, 18Sn, Bi52

205

96 

205

96 

9.58

3.2

15

38

3200

WS118

48Sn, 52In

244  118  244  118  7.3

11.7

34

20

1720

WS143

3Ag, 97In

290 

143 

290 

143 

7.38

4.5

73

22

800

WS145

58Sn, 42In

244  118  293  145  7.3

11.2

31

31

5900

WS149

5Ag, 15Pb, 80In

288 

149 

300 

149 

7.85

6.7

43

28

2550

WS157

100In

315  157  315  157  7.31

5.6

82

24.8

575

WS174

30Pb, 70In

329 

165 

347 

174 

8.19

8.8

38

28

3450

WS179

2Ag, 36Pb, 62Sn

354  179  354  179  8.41

11.9 

42

27

6380

WS181

37.5Pb, 37.5Sn, 25In

273 

134 

358 

181 

8.42

7.8

23

23

5260

WS183

37Pb, 63Sn

361  183  361  183 

8.34

11.8

51

25

7500

WS185

40Pb, 60In

343 

173 

358 

185 

8.52

7

29

53

4150

WS186

30Pb, 70Sn

361  183  367  186 

8.17

12.5

53

27

7800

WS187

2.8Ag, 77.2Sn, 20In

347 

175 

369 

187 

7.25

9.8

54

28

6800

WS188

40Pb, 60Sn

361  183  376  188 

8.5

11.5

49

21.6

7610

WS199

20Pb, 80Sn

361 

183 

390 

199 

7.85

13.8

59

24.5

5800

WS200

45Pb, 55Sn

361  183  392  200 

8.68

11.2

48

22.6

6800

WS205

15Pb, 85Sn

361 

183 

401 

205 

7.7

13.6

58

22

5300

WS209

50Pb, 50In

363  184  410  209 

8.86

6

22

27

4670

WS212

50Pb, 50Sn

361 

183 

414 

212 

8.87

10.9

47

23.6

6000

WS213

10Pb, 90Sn

361  183  415  213 

7.55

13.1

56

26.5

3300

WS217

10Au, 90Sn

423 

217 

423 

217 

7.73

10.2

28

14

15000

WS217A

95.5Sn, 3.8Ag, .7Cu

423 

217 

423 

217 

7.5

13

57

22

7500

WS221

3.5Ag, 96.5Sn

430  221  430  221 

7.36

16

33

30.2

5620

WS225

60Pb, 40In

401 

205 

437 

225 

9.3

5.2

19

26

5000

WS226

3.5Ag, 95Sn, 1.5Sb

424  218  439  226 

7.37

11.9

29

18

7300

WS226A

2.5Ag, 97.5Sn

430 

221 

439 

226 

7.34

11.2

28

19.5

6200

WS232

100Sn

450  232  450  232 

7.28

15.6

73

23.5

1900

WS235

99Sn, 1Sb

455 

235 

455 

235 

7.27

12.3

29

22

2620

WS238

60Pb, 40Sn

361  183  460  238 

9.28

10.1

44

24.7

5400

WS238A

97Sn, 3Sb

450 

232 

460 

238 

9.28

12.1

28

25

4080

WS240

95Sn, 5Sb

450  232  464  240 

7.25

11.9

28

27

5460

WS243

63.2Pb, 35Sn, 1.8In

365 

185 

469 

243 

9.39

9.5

41

21

2900

WS257

70Pb, 30Sn

361  183  495  257 

9.66

9.3

41

25.6

5000

WS264

75Pb, 25In

464 

240 

500 

264 

9.97

4.6

18

26

5450

WS280

80Pb, 20Sn

361  183  536  280 

10.04

8.7

37

26.5

4800

WS280A

81Pb, 19In

518 

270 

536 

280 

10.27

4.5

17

27

5550

WS280B

80Au, 20Sn

536  280  536  280 

14.51

7.7

57

15.9

40000

WS286

86Pb, 8Bi, 4Sn, 1In, 1Ag

514 

268 

547 

286 

10.91

5.6

33

22.4

5317

WS288

85Pb, 15Sn

361  183  550  288 

10.48

8.5

37

27.2

4600

WS290

2Ag, 88Pb, 10Sn

513 

268 

570 

290 

10.75

8.5

27

29.1

3260

WS292

5Ag, 90Pb, 5Sn

558  292  558  292 

11

7.7

26

26

5100

WS295

95Pb, 5Sb

486 

252 

563 

295 

10.96

6.2

27

27

4200

WS296

2.5Ag, 92.5Pb, 5Sn

549  287  565  296 

11.02

7.6

26

24

3500

WS300

2.5Ag, 92.5Pb, 5In

572 

300 

572 

300 

11.02

5.5

25

25

4560

WS302

90Pb, 10Sn

527  275  576  302 

10.5

8.2

36

27.9

4400

WS303

2.5Ag, 97.5Pb

577 

303 

577 

303 

11.33

7.5

26

23

5900

WS304

2.5Ag, 95.5Pb, 2Sn

570  299  579  304 

11.2

7.6

26

23

3400

WS305

78Au, 22Sn

536 

280 

581 

305 

14.81

7.7

57

15.9

40000

WS309

1.5Ag, 97.5Pb, 1Sn

588  309  588 

309 

11.28

6

23

30.4

4420

WS310

5Ag, 90Pb, 5In

554 

290 

590 

310 

11

6.4

29

24

4500

WS314

95Pb, 5In

572  300  597 

314 

11.06

5.1

21

29

4330

WS314A

95Pb, 5Sn

590 

310 

597 

314 

10.8

8.1

35

28.4

4000

WS327

100Pb

621  327  621 

327 

11.35

8.4 

15

29.3

2750

WS361

88Au, 12Ge

682 

361 

682 

361 

14.67

11.4

44

13.4

26900

WS363

96.85Au, 3.15Si

685  363  685 

363 

15.7

46.4

27

12.3

37000

WS487

81.Au, 19In

909 

487 

909 

487 

14.72

8.4

28

14.7

33700

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Last modified: 2016-08-22