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Class Number: 420 Class Title: ALLOYS OR METALLIC COMPOSITIONS Subclass Subclass Number Title 1 RADIOACTIVE 2 .Actinide base; singly or in combination 3 ..Uranium base 4 .Iron base 5 .Magnesium base 6 .Nickel or cobalt base 7 .Aluminum base 8 FERROUS (I.E., IRON BASE) 9 .1.7 percent or more carbon containing 10 ..Six percent or more total group IV, V or VI transition metals containing 11 ...Eight percent or more chromium containing 12 ....Molybdenum, tungsten or vanadium containing 13 ..2.7 percent or more carbon equivalent containing (i.e., cast iron) 14 ...Boron containing 15 ...Chromium containing 16 ....Nickel containing 17 .....Molybdenum containing 18 ...Processes of adding magnesium 19 ....Adding magnesium as a liquid, vapor or as a solid agent entrained by gas (e.g., fluidized) 20 ....Flowing molten iron alloy onto solid magnesium containing agent, or adding solid magnesium containing agent to molten stream of iron alloy 21 ....Mechanically plunging magnesium containing agent below surface of iron alloy melt 22 ....Separate addition of plural agents, at least one containing magnesium 23 ....Magnesium containing agent is coated, impregnated, or compacted (e.g., briquetted, coated particles) 24 ....Magnesium present in agent only as a compound with a nonmetal 25 ....In agent also containing silicon, rare earth, or alkaline earth metal 26 ...Copper containing 27 ...Nickel or molybdenum containing 28 ...Over .1 percent aluminum containing 29 ...Processes 30 ....Adding rare earth or alkaline earth metal 31 ....Adding sulfur, selenium or tellurium 32 ....Adding vanadium, titanium, niobium, or zirconium 33 ....Adding silicon 34 .Nine percent or more chromium containing 35 ..Noble metal containing 36 ..Cobalt containing 37 ...Molybdenum or tungsten containing 38 ....Nickel containing 39 ....Copper containing 40 ..Rare earth containing 41 ..Lead, bismuth, antimony, calcium, selenium or tellurium containingg 42 ..Over 0.05 percent sulfur, over 0.04 percent phosphorus or sulfur or phosphorus added in any amount to promote machinability 43 ..Eight percent or more nickel containing 44 ...Over 2 percent manganese containing 45 ....Copper containing 46 ....Molybdenum or tungsten containing 47 .....Group IV or V transition metal containing 48 ....Group IV or V transition metal containing 49 ...Copper containing 50 ...Over 1.5 percent silicon containing 51 ....Group IV or V transition metal containing 52 ...Molybdenum containing 53 ....Group IV or V transition metal containing 54 ...Group IV or V transition metal containing 55 ...Over 0.1 percent carbon containing 56 ..Eight percent or more total nickel plus manganese containing 57 ...Molybdenum or tungsten containing 58 ...Copper containing 59 ...Over 0.20 percent nitrogen containing 60 ..Copper containing 61 ...Molybdenum or tungsten containing 62 ..Over 0.1 percent aluminum containing 63 ...Molybdenum or tungsten conaining 64 ..Boron containing 65 ..0.25 percent or more nitrogen containing 66 ...Group IV or V transition metal containing 67 ..Molybdenum or tungsten containing 68 ...Titanium, zirconium or hafnium containing 69 ...Vanadium, niobium or tantalum containing 70 ..Group IV or V transition metal containing 71 ..Processes 72 .Eight percent or more manganese containing 73 ..Nickel containing 74 ..Chromium containing 75 ..Titanium containing 76 ..Copper containing 77 .Four percent or more aluminum containing 78 ..Over 2 percent silicon containing 79 ..Chromium containing 80 ..Nickel or cobalt containing 81 ..Zirconium, vanadium or titanium containing 82 .Noble metal containing 83 .Rare earth metal containing 84 .Lead, bismuth, selenium, tellurium or calcium containing 85 ..Processes 86 ...Adding lead 87 .Over 0.05 percent sulfur, over 0.04 percent phosphorus or sulfur or phosphorus added in any amount to promote machinability 88 ..Processes of making or treating alloy containing over 0.04 percent phosphorus 89 .Copper containing 90 ..Chromium containing 91 ...Nickel containing 92 ..Nickel containing 93 ..Vanadium, zirconium, titanium or molybdenum containing 94 .Over 10 percent nickel containingg 95 ..Cobalt containing 96 ..Molybdenum containing 97 ..Chromium containing 98 ..Over 1 percent silicon containing 99 .One percent or more carbon containing, but less than 1.7 percent 100 ..Chromium containing 101 ...Molybdenum containing 102 ....Cobalt containing 103 .Over 0.1 percent aluminum containing, but less than 4 percent 104 .Chromium containing, but less than 9 percent 105 ..Molybdenum containing 106 ...Boron or beryllium containing 107 ...Cobalt containing 108 ...Nickel containing 109 ....Vanadium, titanium or zirconium containing 110 ...Titanium, zirconium or niobium containing 111 ...Vanadium containing 112 ..Nickel containing 113 ...Tungsten containing 114 ..Tungsten containing 115 ..Processes 116 ...Including reducing a chromium compound 117 .Two percent or more silicon containing 118 ..Titanium, molybdenum, tungsten or vanadium containing 119 .Nickel containing, but 10 percent or less 120 .1.5 percent or more manganese containing, but less than 8 percent 121 .Boron containing 122 .Tungsten containing 123 .Molybdneum containing 124 ..Vanadium, tantalum or titanium containing 125 .Zirconium containing 126 .Titanium containing 127 .Vanadium, tantalum or niobium containing 128 .Nitrogen containinig 129 .Processes 400 ALKALI METAL BASE 401 BERYLLIUM BASE 402 MAGNESIUM BASE 403 .Silver containing 404 ..Manganese containing 405 .Lanthanide containing 406 ..Zirconium containing 407 .Aluminum containing 408 ..Zinc containing 409 ...Manganese containing 410 ..Manganese containing 411 .Zinc containing 412 ..Manganese containing 413 .Manganese containing 414 .Zirconium containing 415 ALKALINE EARTH METAL BASE 416 RARE EARTH METAL BASE SINGLY OR IN COMBINATION 417 TITANIUM BASE 418 .Aluminum containing 419 ..Tin containing 420 ..Vanadium containingg 421 .Chromium or molybdenum containing 422 ZIRCONIUM OR HAFNIUM BASE 423 .Copper containing 424 VANADIUM BASE 425 NIOBIUM BASE 426 .Titanium, zirconium, or hafnium containing 427 TANTALUM BASE 428 CHROMIUM BASE 429 MOLYBDENUM BASE 430 TUNGSTEN BASE 431 .Carbon, boron or nitrogen containing 432 .Rhenium or noble metal containing 433 RHENIUM BASE 434 MANGANESE BASE 435 COBALT BASE 436 .Chromium containing 437 ..Aluminum containing 438 ...Titanium containing 439 ..Titanium containing 440 ..Iron containing 441 NICKEL BASE 442 .Chromium containing 443 ..Rare earth, magnesium or alkaline earth metal containing 444 ..Noble metal containing 445 ..Aluminum containing 446 ...Titanium containing 447 ....Tantalum, niobium, vanadium, or hafnium containing 448 .....Molybdenum or tungsten containing 449 ....Zirconium or boron containing 450 ....Molybdenum or tungsten containing 451 ..Titanium containing 452 ..Iron or manganese containing 453 ...Molybdenum or tungsten containing 454 ....Cobalt containing 455 .Rare earth containing 456 .Noble metal containing 457 .Copper containing 458 ..Iron containing 459 .Iron or manganese containing 460 .Aluminum containing 461 OSMIUM OR IRIDIUM BASE 462 RUTHENIUM OR RHODIUM BASE 463 PALLADIUM BASE 464 .Copper containing 465 .Platinum containing 466 PLATINUM BASE 467 .Rhodium containing 468 .Nickel containing 469 COPPER BASE 470 .Tin containing 471 ..Aluminum containing 472 ..Phosphorus containing 473 ..Iron, manganese or nickel containing 474 ..Lead containing 475 ...Zinc containing 476 ..Zinc containing 477 .Zinc containing 478 ..Aluminum containingg 479 ...Nickel containing 480 ...Manganese containing 481 ..Nickel containing 482 ..Manganese containing 483 ..Noble metal containing 484 ..Refractory metal containing 485 .Nickel containing 486 ..Aluminum containing 487 ..Iron or manganese containing 488 ..Refractory metal containing 489 .Aluminum, gallium, indium, or thallium containing 490 .Silicon containing 491 .Lead containing 492 .Titanium, zirconium or hafnium containing 493 .Manganese containing 494 .Beryllium, magnesium, or alkaline earth metal containing 495 .Other refractory metal containing 496 .Iron or cobalt containing 497 .Noble metal containing 498 .Cadmium, or mercury containing 499 .Phosphorus, arsenic, antimony, or bismuth containing 500 .Sulfur, selenium, or tellurium containing 501 SILVER BASE 502 .Copper containing 503 ..Other noble metal containing 504 ..Zinc, or cadmium containing 505 .Other noble metal containing 506 .Zinc, or cadmium containing 507 GOLD BASE 508 .Palladium containing 509 ..Platinum containing 510 .Platinum containing 511 .Silver containing 512 .Iron, cobalt, or nickel containing 513 ZINC BASE 514 .Aluminum containing 515 ..Copper containing 516 ...Mangesium containing 517 ...Tin containing 518 ...Manganese, iron, cobalt, or nickel containing 519 ..Magnesium containing 520 ..Manganese, iron, cobalt, or nickel containing 521 .Copper containing 522 ..Manganese, iron, cobalt, or nickel containing 523 .Cadmium containing 524 .Tin containing 525 CADMIUM BASE 526 MERCURY BASE 527 .Silver containing 528 ALUMINUM BASE 529 .Copper containing 530 ..Tin containing 531 ..Zinc containing 532 ...Magnesium containing 533 ..Magnesium containing 534 ...Silicon containing 535 ....Titanium, zirconium, hafnium, vanadium, niobium, or tantalum containingg 536 ....Cadmium, lead or bismuth containing 537 ..Silicon containing 538 ..Iron, cobalt, or nickel containing 539 ..Silver containing 540 .Zinc containing 541 ..Magnesium containing 542 .Magnesium containing 543 ..Titanium, zirconium, hafnium, vanadium, niobium, or tantalum containing 544 ...Silicon containing 545 ...Chromium containing 546 ..Silicon containing 547 ..Iron, cobalt, or nickel containing 548 .Silicon containing 549 ..Alkali, or alkaline earth metal containing 550 .Iron, cobalt, or nickel containing 551 ..Titanium, zirconium, hafnium, vanadium, noobium or tantalum containing 552 .Titanium, zirconium, hafnium, vanadium, niobium, or tantalum containing 553 ..Manganese containing 554 .Cadmium, lead, or bismuth containing 555 GALLIUM, INDIUM, OR THALLIUM BASE 556 GERMANIUM BASE 557 TIN BASE 558 .Lead containing 559 ..Antimony, or bismuth containing 560 .Copper containing 561 ..Antimony, or bismuth containing 562 .Antimony, or bismuth containing 563 LEAD BASE 564 .Alkali, alkaline earth metal or magnesium containing 565 ..Tin containing 566 .Silver containing 567 .Arsenic containing 568 ..Tin containing 569 ...Antimony containing 570 .Tin containing 571 ..Antimony containing 572 .Antimony containing 573 .Copper containing 574 .Zinc containing 575 .Cadmium containing 576 ANTIMONY BASE 577 BISMUTH BASE 578 SILICON BASE ALLOY CONTAINING METAL 579 ARSENIC BASE OR SELENIUM OR TELLURIUM BASE ALLOY CONTAINING METAL 580 CONTAINING OVER 50 PER CENT METAL BUT NO BASE METAL 581 .Iron containing 582 ..Copper containing 583 ..Chromium containing 584.1 ...Nickel containing 585 ....Cobalt containing 586 .....Titanium, or zirconium containing 586.1 ....Molybdenum containing 587 .Copper containing 588 .Chromium containingg 589 .Tin containing 590 PROCESSES 591 MISCELLANEOUS * ****************************** * CROSS-REFERENCE ART COLLECTIONS * ****************************** 900 HYDROGEN STORAGE 901 SUPERCONDUCTIVE 902 SUPERPLASTIC 903 SEMICONDUCTIVE