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White metal

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Alloys consist of small particles of a hard compound embedded in the tough, ductile background of a solid solution. In service, the latter can wear away slightly, leaving the hard compound to carry the load. That wear also provides channels to allow in
532: 274:. Most importantly for bearings, the material should be hard and wear-resistant and have a low coefficient of friction. It must also be shock-resistant, tough and sufficiently ductile to allow for slight misalignment prior to running-in. 423:
White metals are commonly used in bearings and bushings because of their high load-bearing capacity and self-lubricating properties, which reduce friction and extend the lifespan of these components. In the
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In compliance with British law, the British fine art trade uses the term "white metal" in auction catalogues to describe foreign silver items which do not carry
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are found in all white metal alloys. Metals are mixed to achieve a desired goal or need. As an example, a base metal for jewellery needs to be
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compounds are hard and wear-resistant but brittle. By themselves, they do not make ideal bearing materials.
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and decorative items due to its cost-effectiveness and ability to mimic more expensive metals like
42: 505: 208: 530:, Isaac Babbitt, "Mode of making boxes for axles and gudgeons", issued 17 Jul 1839 172:. The term is also used in the antiques trade for an item suspected of being silver, but not 236: 149: 8: 436:. In the printing industry, white metal alloys were historically used to cast typefaces. 425: 89: 137: 655: 604: 579: 560: 556: 681: 476: 446: 263: 20: 242:, but which are nonetheless understood to be silver and are priced accordingly. 277:
Pure metals are soft, tough and ductile, with a high coefficient of friction.
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Dean, R.R.; Evans, C.J. (1976). "Plain bearing materials: The role of tin".
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Doug Woodyard (2009). "Chapter Fourteen - Doxford Low-Speed Engines".
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Some Properties of White Metal Bearing Alloys at Elevated Temperatures
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This article is about metallic alloys. For the musical genre, see
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Light and medium internal combustion engine big-end bearings
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General-purpose heavy bearings (lead increases plasticity)
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Light and medium internal combustion engine main bearings
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Heavy-duty marine engine bearings, electrical machines
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have a low melting point, which is ideal for use as
140:, ornaments or novelties, as well as any of several 56:. Unsourced material may be challenged and removed. 654:(1st ed.). Woodhead Publishing. p. 115. 203:(some of which are quite toxic). Not all of these 245: 673: 601:Pounder's Marine Diesel Engines and Gas Turbines 412:Low-cost, general-purpose, medium-duty bearings 573: 132:are a series of often decorative bright metal 598: 649: 546: 500: 498: 116:Learn how and when to remove this message 249: 603:(9th ed.). Butterworth-Heinemann. 297:(Sb), which forms hard cubic crystals. 674: 574:Freeman, J.R.; Woodward, R.W. (2024). 495: 219:and cast at between 230 and 300  16:Type of decorative bright metal alloy 54:adding citations to reliable sources 25: 148:-based alloys used for things like 13: 14: 698: 626:"An Introduction to White Metals" 623: 254:Bars and ingots of Babbitt metal 179:A white metal alloy may include 30: 508:. Belmont Metals. 17 April 2019 418: 293:). All bearing metals contain 41:needs additional citations for 643: 617: 592: 578:. Forgotten Books. p. 4. 567: 540: 520: 246:Tin-lead and tin-copper alloys 1: 488: 652:The International Lead Trade 561:10.1016/0301-679X(76)90032-3 7: 439: 10: 703: 136:used as a base for plated 18: 526: 230: 549:Tribology International 255: 687:Bearings (mechanical) 650:Vincent Rich (1994). 253: 237:British Assay Office 50:improve this article 426:automotive industry 528:US patent 1252 256: 223:(446 and 572  610:978-0-7506-8984-7 416: 415: 258:Tin-lead and tin- 158:miniature figures 126: 125: 118: 100: 694: 666: 665: 647: 641: 640: 638: 636: 624:Green, Julissa. 621: 615: 614: 596: 590: 589: 571: 565: 564: 544: 538: 536: 535: 531: 524: 518: 517: 515: 513: 502: 300: 299: 121: 114: 110: 107: 101: 99: 58: 34: 26: 702: 701: 697: 696: 695: 693: 692: 691: 672: 671: 670: 669: 662: 648: 644: 634: 632: 630:Sputter Targets 622: 618: 611: 597: 593: 586: 572: 568: 545: 541: 533: 525: 521: 511: 509: 504: 503: 496: 491: 486: 447:Britannia metal 442: 421: 262:alloys such as 248: 233: 122: 111: 105: 102: 59: 57: 47: 35: 24: 21:Christian metal 17: 12: 11: 5: 700: 690: 689: 684: 668: 667: 660: 642: 616: 609: 591: 584: 566: 555:(3): 101–108. 539: 519: 506:"White Metals" 493: 492: 490: 487: 485: 484: 479: 474: 469: 464: 459: 454: 449: 443: 441: 438: 420: 417: 414: 413: 410: 407: 404: 401: 397: 396: 393: 390: 387: 384: 380: 379: 376: 373: 370: 367: 363: 362: 359: 356: 353: 350: 346: 345: 342: 339: 336: 333: 329: 328: 325: 319: 313: 307: 272:plain bearings 247: 244: 232: 229: 124: 123: 38: 36: 29: 15: 9: 6: 4: 3: 2: 699: 688: 685: 683: 680: 679: 677: 663: 657: 653: 646: 631: 627: 620: 612: 606: 602: 595: 587: 581: 577: 570: 562: 558: 554: 550: 543: 529: 523: 507: 501: 499: 494: 483: 480: 478: 475: 473: 470: 468: 465: 463: 460: 458: 455: 453: 452:Nickel silver 450: 448: 445: 444: 437: 435: 431: 427: 411: 408: 405: 402: 399: 398: 394: 391: 388: 385: 382: 381: 377: 374: 371: 368: 365: 364: 360: 357: 354: 351: 348: 347: 343: 340: 337: 334: 331: 330: 327:Applications 326: 324: 320: 318: 314: 312: 308: 306: 302: 301: 298: 296: 292: 288: 282: 280: 279:Intermetallic 275: 273: 269: 265: 264:Babbitt metal 261: 252: 243: 241: 238: 228: 226: 222: 218: 214: 210: 206: 202: 198: 194: 190: 186: 182: 177: 175: 171: 167: 163: 162:fusible plugs 159: 155: 151: 147: 143: 139: 135: 131: 120: 117: 109: 106:February 2018 98: 95: 91: 88: 84: 81: 77: 74: 70: 67: –  66: 65:"White metal" 62: 61:Find sources: 55: 51: 45: 44: 39:This article 37: 33: 28: 27: 22: 651: 645: 633:. Retrieved 629: 619: 600: 594: 575: 569: 552: 548: 542: 522: 510:. Retrieved 477:Wood's metal 467:Punchcutting 422: 419:Applications 283: 276: 257: 234: 178: 130:white metals 129: 127: 112: 103: 93: 86: 79: 72: 60: 48:Please help 43:verification 40: 676:Categories 661:1855731037 585:1333453655 489:References 213:polishable 174:hallmarked 168:and metal 144:-based or 138:silverware 76:newspapers 512:April 18, 462:Pot metal 430:jewellery 287:lubricant 240:hallmarks 154:jewellery 440:See also 295:antimony 217:porosity 209:castable 181:antimony 150:bearings 635:Aug 11, 472:Spelter 199:, and 197:bismuth 193:cadmium 164:, some 90:scholar 682:Alloys 658:  607:  582:  534:  457:Pewter 434:silver 268:solder 260:copper 231:Silver 205:metals 166:medals 134:alloys 92:  85:  78:  71:  63:  482:Zamak 97:JSTOR 83:books 656:ISBN 637:2024 605:ISBN 580:ISBN 514:2021 409:48.5 389:28.5 352:10.5 291:oils 201:zinc 189:lead 170:type 142:lead 128:The 69:news 557:doi 406:1.5 392:1.5 375:6.0 372:3.0 355:3.5 338:3.5 335:3.5 227:). 185:tin 146:tin 52:by 678:: 628:. 551:. 497:^ 403:10 400:40 386:10 383:60 369:11 366:80 349:86 332:93 323:Pb 321:% 317:Cu 315:% 311:Sb 309:% 305:Sn 303:% 225:°F 221:°C 211:, 195:, 191:, 187:, 183:, 176:. 160:, 156:, 152:, 664:. 639:. 613:. 588:. 563:. 559:: 553:9 537:. 516:. 358:– 341:– 289:( 119:) 113:( 108:) 104:( 94:· 87:· 80:· 73:· 46:. 23:.

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