Haynes 188 is a cobalt-based alloy which possesses a unique combination of properties. It has excellent high temperature strength and oxidation resistance to 2100°F (1150°C) combined with good post-aging ductility.
Alloy 188 has average room temperature tensile properties in the bright annealed condition of 137.2 ksi (946 MPa) ultimate strength, 67.3 ksi (464 MPa) yield strength and 53% elongation. At 1800°F (980°C) the alloy has ultimate and yield strengths of 35.2 ksi (243 MPa) and 19.0 ksi (131 MPa), respectively, with 59% elongation. Cryogenic temperatures do not significantly affect the ductility of alloy 188, but strength levels are increased markedly.
The excellent oxidation resistance of Haynes 188 results from minute additions of lanthanum, which modifies the protective oxide scale in such a manner that the oxide becomes extremely tenacious and retards diffusion when exposed to temperatures through 2100°F (1150°C).
Haynes 188 exhibits good ductility after prolonged exposure at temperatures of 1200, 1400, and 1600°F (650, 760 and 870°C) for 16,000 hours.
| ALLOY | SIZE | WEIGHT |
|---|---|---|
| CURRENT PLATE INVENTORY | ||
| Alloy 188 | 0.187 X 36.000 X 120.000 4.7498MM X 914.4 X 3048 | 2254 LBS 1022 KG |
| Alloy 188 | 0.187 X 36.000 X 144.000 4.7498MM X 914.4 X 3657.6 | 327 LBS 148 KG |
| Alloy 188 | 0.250 X 48.000 X 144.000 6.35MM X 1219.2 X 3657.6 | 7166 LBS 3250 KG |
| Alloy 188 | 0.250 X 48.000 X 200.130 6.35MM X 1219.2 X 5083.302 | 953 LBS 432 KG |
| Alloy 188 | 0.375 X 33.750 X 36.750 9.525MM X 857.25 X 933.45 | 130 LBS 59 KG |
| Alloy 188 | 0.375 X 43.875 X 123.625 9.525MM X 1114.425 X 3140.075 | 720 LBS 327 KG |
| Alloy 188 | 0.375 X 48.000 X 200.000 9.525MM X 1219.2 X 5080 | 1364 LBS 619 KG |
| Alloy 188 | 0.375 X 48.000 X 200.125 9.525MM X 1219.2 X 5083.175 | 4002 LBS 1815 KG |
| Alloy 188 | 0.375 X 48.000 X 200.250 9.525MM X 1219.2 X 5086.35 | 1303 LBS 591 KG |
| Alloy 188 | 0.375 X 48.125 X 200.125 9.525MM X 1222.375 X 5083.175 | 1290 LBS 585 KG |
| Alloy 188 | 0.500 X 48.000 X 127.375 12.7MM X 1219.2 X 3235.325 | 1489 LBS 675 KG |
| Alloy 188 | 0.500 X 48.000 X 189.000 12.7MM X 1219.2 X 4800.6 | 3316 LBS 1504 KG |
| Alloy 188 | 0.500 X 48.000 X 200.000 12.7MM X 1219.2 X 5080 | 3446 LBS 1563 KG |
| Alloy 188 | 0.500 X 48.000 X 200.125 12.7MM X 1219.2 X 5083.175 | 3407 LBS 1545 KG |
| Alloy 188 | 0.750 X 48.000 X 2.000 19.05MM X 1219.2 X 50.8 | 32 LBS 15 KG |
| Alloy 188 | 0.750 X 48.000 X 32.375 19.05MM X 1219.2 X 822.325 | 604 LBS 274 KG |
| Alloy 188 | 0.750 X 48.000 X 168.000 19.05MM X 1219.2 X 4267.2 | 4364 LBS 1979 KG |
| Alloy 188 | 0.750 X 48.002 X 168.000 19.05MM X 1219.2508 X 4267.2 | 2134 LBS 968 KG |
| Alloy 188 | 1.000 X 10.500 X 5.875 25.4MM X 266.7 X 149.225 | 31 LBS 14 KG |
| Alloy 188 - DUE DATE: 03-20-25 | 1.000 X 49.000 X 200.000 25.4MM X 1244.6 X 5080 | 3187 LBS 1446 KG |
| Alloy 188 - DUE DATE: 02-25-25 | 1.250 X 49.000 X 200.060 31.75MM X 1244.6 X 5081.524 | 3961 LBS 1797 KG |
| Alloy 188 | 1.500 X 4.375 X 6.500 38.1MM X 111.125 X 165.1 | 32 LBS 15 KG |
| Alloy 188 | 1.500 X 8.875 X 24.125 38.1MM X 225.425 X 612.775 | 837 LBS 380 KG |
| Alloy 188 | 1.500 X 15.000 X 9.250 38.1MM X 381 X 234.95 | 115 LBS 52 KG |
| Alloy 188 | 1.500 X 49.000 X 135.375 38.1MM X 1244.6 X 3438.525 | 4232 LBS 1920 KG |
| Alloy 188 | 1.500 X 49.001 X 200.000 38.1MM X 1244.6254 X 5080 | 5185 LBS 2352 KG |
| Alloy 188 | 2.000 X X 50.8MM X 0 X 0 | 0 LBS 0 KG |
| Alloy 188 | 2.000 X 4.500 X 9.750 50.8MM X 114.3 X 247.65 | 458 LBS 208 KG |
| Alloy 188 | 2.000 X 49.125 X 177.250 50.8MM X 1247.775 X 4502.15 | 6016 LBS 2729 KG |
| ALLOY | SIZE | WEIGHT |
|---|---|---|
| CURRENT BAR INVENTORY | ||
| Alloy 188 | 0.385 DIA X 101-178RL 9.779MM DIA | 1037 LBS 470 KG |
| Alloy 188 | 0.385 DIA X 144"RL 9.779MM DIA | 241 LBS 109 KG |
| Alloy 188 | 0.510 DIA X 129-157 RL 12.954MM DIA | 166 LBS 75 KG |
| Alloy 188 | 0.510 DIA X 137-173 RL 12.954MM DIA | 1013 LBS 459 KG |
| Alloy 188 | 0.760 DIA X 131-157RL 19.304MM DIA | 1058 LBS 480 KG |
| Alloy 188 - DUE DATE: 03-15-25 | 0.760 DIA X 161 RL 19.304MM DIA | 4000 LBS 1814 KG |
| Alloy 188 - DUE DATE: 03-15-25 | 0.760 DIA X 162 RL 19.304MM DIA | 2000 LBS 907 KG |
| Alloy 188 - DUE DATE: 07-25-25 | 0.760 DIA X 163 RL 19.304MM DIA | 3000 LBS 1361 KG |
| Alloy 188 | 1.010 DIA X 12-14 RL 25.654MM DIA | 11 LBS 5 KG |
| Alloy 188 | 1.010 DIA X 133-175RL 25.654MM DIA | 2087 LBS 947 KG |
| Alloy 188 | 1.010 DIA X 138-186RL 25.654MM DIA | 1979 LBS 898 KG |
| Alloy 188 | 1.010 DIA X 141-172RL 25.654MM DIA | 2004 LBS 909 KG |
| Alloy 188 | 1.010 DIA X 154-176RL+89.6 25.654MM DIA | 955 LBS 433 KG |
| Alloy 188 - DUE DATE: 08-05-25 | 1.010 DIA X 160 RL 25.654MM DIA | 3000 LBS 1361 KG |
| Alloy 188 - DUE DATE: 01-25-25 | 1.010 DIA X 164 RL 25.654MM DIA | 3000 LBS 1361 KG |
| Alloy 188 - DUE DATE: 04-15-25 | 1.010 DIA X 165 RL 25.654MM DIA | 3000 LBS 1361 KG |
| Alloy 188 | 1.135 DIA X 125-170RL 28.829MM DIA | 1990 LBS 903 KG |
| Alloy 188 | 1.135 DIA X 23.375 28.829MM DIA | 8 LBS 4 KG |
| Alloy 188 | 1.135 DIA X 92-173RL 28.829MM DIA | 1598 LBS 725 KG |
| Alloy 188 | 1.197 DIA X 102/165" RL 30.4038MM DIA | 1720 LBS 780 KG |
| Alloy 188 - DUE DATE: 02-10-25 | 1.197 DIA X 161 RL 30.4038MM DIA | 2000 LBS 907 KG |
| Alloy 188 | 1.260 DIA X 140/163"RL+122 32.004MM DIA | 2167 LBS 983 KG |
| Alloy 188 - DUE DATE: 03-15-25 | 1.260 DIA X 161 RL 32.004MM DIA | 3000 LBS 1361 KG |
| Alloy 188 - DUE DATE: 08-05-25 | 1.260 DIA X 162 RL 32.004MM DIA | 3000 LBS 1361 KG |
| Alloy 188 | 1.385 DIA X 123/172RL 35.179MM DIA | 2015 LBS 914 KG |
| Alloy 188 - DUE DATE: 04-15-25 | 1.385 DIA X 161 RL 35.179MM DIA | 2000 LBS 907 KG |
| Alloy 188 | 1.510 DIA X 131-159RL 38.354MM DIA | 1915 LBS 869 KG |
| Alloy 188 - DUE DATE: 04-15-25 | 1.510 DIA X 161 RL 38.354MM DIA | 3000 LBS 1361 KG |
| Alloy 188 - DUE DATE: 08-06-25 | 1.510 DIA X 162 RL 38.354MM DIA | 4000 LBS 1814 KG |
| Alloy 188 | 1.760 DIA X 131-160RL+75 44.704MM DIA | 2867 LBS 1300 KG |
| Alloy 188 | 1.760 DIA X 150-169RL 44.704MM DIA | 759 LBS 344 KG |
| Alloy 188 - DUE DATE: 04-15-25 | 1.760 DIA X 160 RL 44.704MM DIA | 3000 LBS 1361 KG |
| Alloy 188 | 2.010 DIA X 100-133 RL 51.054MM DIA | 1968 LBS 893 KG |
| Alloy 188 | 2.010 DIA X 117-159 RL 51.054MM DIA | 3588 LBS 1627 KG |
| Alloy 188 | 2.010 DIA X 125-157 RL 51.054MM DIA | 1386 LBS 629 KG |
| Alloy 188 | 2.010 DIA X 138-174RL 51.054MM DIA | 3534 LBS 1603 KG |
| Alloy 188 | 2.010 DIA X 144-156RL 51.054MM DIA | 1873 LBS 850 KG |
| Alloy 188 | 2.010 DIA X 3.625 51.054MM DIA | 4 LBS 2 KG |
| Alloy 188 | 2.260 DIA X 109-131 RL +66 57.404MM DIA | 905 LBS 411 KG |
| Alloy 188 | 2.260 DIA X 111/124" RL 57.404MM DIA | 2322 LBS 1053 KG |
| Alloy 188 - DUE DATE: 01-25-25 | 2.260 DIA X 158 RL 57.404MM DIA | 3000 LBS 1361 KG |
| Alloy 188 | 2.260 DIA X 92-193 RL 57.404MM DIA | 2386 LBS 1082 KG |
| Alloy 188 | 2.510 DIA X 101-134 RL 63.754MM DIA | 1637 LBS 743 KG |
| Alloy 188 | 2.510 DIA X 104-146RL+180 63.754MM DIA | 3362 LBS 1525 KG |
| Alloy 188 | 2.510 DIA X 124-178RL 63.754MM DIA | 3292 LBS 1493 KG |
| Alloy 188 - DUE DATE: 03-15-25 | 2.510 DIA X 164 RL 63.754MM DIA | 3000 LBS 1361 KG |
| Alloy 188 | 2.510 DIA X 45-194RL 63.754MM DIA | 1990 LBS 903 KG |
| Alloy 188 | 2.515 DIA X 1.875 63.881MM DIA | 2 LBS 1 KG |
| Alloy 188 | 2.750 DIA X 138.375 + 87 69.85MM DIA | 444 LBS 201 KG |
| Alloy 188 | 2.760 DIA X 146-192 RL 70.104MM DIA | 3892 LBS 1765 KG |
| Alloy 188 | 2.760 DIA X 94-178RL 70.104MM DIA | 2067 LBS 938 KG |
| Alloy 188 | 3.020 DIA X 1 76.708MM DIA | 3 LBS 1 KG |
| Alloy 188 | 3.020 DIA X 100-145RL 76.708MM DIA | 2946 LBS 1336 KG |
| Alloy 188 | 3.020 DIA X 142+138+109+2 76.708MM DIA | 908 LBS 412 KG |
| Alloy 188 | 3.020 DIA X 89-148 RL 76.708MM DIA | 2228 LBS 1011 KG |
| Alloy 188 | 3.520 DIA X 135-143RL 89.408MM DIA | 2222 LBS 1008 KG |
| Alloy 188 | 3.520 DIA X 150+149.5+31 89.408MM DIA | 1050 LBS 476 KG |
| Alloy 188 | 3.520 DIA X 95-134RL 89.408MM DIA | 2372 LBS 1076 KG |
| Alloy 188 | 4.020 DIA X 10.500 102.108MM DIA | 44 LBS 20 KG |
| Alloy 188 | 4.020 DIA X 108-110RL 102.108MM DIA | 1361 LBS 617 KG |
| Alloy 188 - DUE DATE: 02-15-25 | 4.020 DIA X 160 RL 102.108MM DIA | 1640 LBS 744 KG |
| Alloy 188 - DUE DATE: 04-15-25 | 4.020 DIA X 163 RL 102.108MM DIA | 3000 LBS 1361 KG |
| Alloy 188 | 4.020 DIA X 164.625+53.875 102.108MM DIA | 917 LBS 416 KG |
| Alloy 188 - DUE DATE: 02-20-25 | 4.020 DIA X 168"RL 102.108MM DIA | 4172 LBS 1892 KG |
| Alloy 188 | 4.645 DIA X 101-171RL 117.983MM DIA | 4257 LBS 1931 KG |
| Alloy 188 | 4.645 DIA X 109-185RL 117.983MM DIA | 3397 LBS 1541 KG |
| Alloy 188 | 4.645 DIA X 110-160" RL 117.983MM DIA | 3998 LBS 1813 KG |
| Alloy 188 - DUE DATE: 11-18-25 | 4.645 DIA X 121 RL 117.983MM DIA | 3300 LBS 1497 KG |
| Alloy 188 | 4.645 DIA X 127-166RL 117.983MM DIA | 4245 LBS 1926 KG |
| Alloy 188 | 4.645 DIA X 138-182RL + 97 117.983MM DIA | 4762 LBS 2160 KG |
| Alloy 188 - DUE DATE: 07-20-25 | 4.645 DIA X 144.1 RL 117.983MM DIA | 3500 LBS 1588 KG |
| Alloy 188 | 4.645 DIA X 145-159RL 117.983MM DIA | 4230 LBS 1919 KG |
| Alloy 188 | 4.645 DIA X 1PC 1" 117.983MM DIA | 6 LBS 3 KG |
| Alloy 188 | 4.645 DIA X 1PC 1.125" 117.983MM DIA | 6 LBS 3 KG |
| Alloy 188 | 4.645 DIA X 82-103"RL 117.983MM DIA | 2076 LBS 942 KG |
| Alloy 188 | 6.625 DIA X 162.75 +42.125 168.275MM DIA | 2337 LBS 1060 KG |
| Alloy 188 | 6.625 DIA X 188.25+181.875 168.275MM DIA | 4239 LBS 1923 KG |
| Alloy 188 - DUE DATE: 09-25-25 | 6.625 DIA X 191 RL 168.275MM DIA | 4400 LBS 1996 KG |
| Alloy 188 | 6.645 DIA X 105.625+97+87 168.783MM DIA | 3302 LBS 1498 KG |
| Alloy 188 - DUE DATE: 07-20-25 | 6.645 DIA X 120-159 RL 168.783MM DIA | 6600 LBS 2994 KG |
| Alloy 188 - DUE DATE: 11-18-25 | 6.645 DIA X 120-160 RL 168.783MM DIA | 3500 LBS 1588 KG |
| Alloy 188 - DUE DATE: 07-15-25 | 6.645 DIA X 192 RL 168.783MM DIA | 4434 LBS 2011 KG |
| ALLOY | SIZE | WEIGHT |
|---|---|---|
| CURRENT SHEET INVENTORY | ||
| Alloy 188 | 0.008 X 8.000 X 9999.000 0.2032MM X 203.2 X 253974.6 | 336 LBS 152 KG |
| Alloy 188 - DUE DATE: 04-02-25 | 0.008 X 8.001 X 9999.000 0.2032MM X 203.2254 X 253974.6 | 2000 LBS 907 KG |
| Alloy 188 | 0.010 X 8.000 X 9999.000 0.254MM X 203.2 X 253974.6 | 5134 LBS 2329 KG |
| Alloy 188 - DUE DATE: 03-18-25 | 0.010 X 8.000 X 9999.000 0.254MM X 203.2 X 253974.6 | 1102 LBS 500 KG |
| Alloy 188 | 0.012 X 7.875 X 9999.000 0.3048MM X 200.025 X 253974.6 | 201 LBS 91 KG |
| Alloy 188 | 0.012 X 8.000 X 9999.000 0.3048MM X 203.2 X 253974.6 | 1778 LBS 806 KG |
| Alloy 188 | 0.016 X 36.000 X 120.000 0.4064MM X 914.4 X 3048 | 5179 LBS 2349 KG |
| Alloy 188 | 0.020 X 36.000 X 120.000 0.508MM X 914.4 X 3048 | 5794 LBS 2628 KG |
| Alloy 188 | 0.025 X 36.000 X 120.000 0.635MM X 914.4 X 3048 | 5391 LBS 2445 KG |
| Alloy 188 | 0.032 X 36.000 X 120.000 0.8128MM X 914.4 X 3048 | 6008 LBS 2725 KG |
| Alloy 188 | 0.032 X 36.000 X 120.010 0.8128MM X 914.4 X 3048.254 | 4708 LBS 2136 KG |
| Alloy 188 | 0.040 X 36.000 X 120.000 1.016MM X 914.4 X 3048 | 5105 LBS 2316 KG |
| Alloy 188 | 0.040 X 36.001 X 120.000 1.016MM X 914.4254 X 3048 | 3414 LBS 1549 KG |
| Alloy 188 | 0.040 X 36.002 X 120.000 1.016MM X 914.4508 X 3048 | 4383 LBS 1988 KG |
| Alloy 188 | 0.040 X 36.003 X 120.000 1.016MM X 914.4762 X 3048 | 4225 LBS 1916 KG |
| Alloy 188 | 0.040 X 36.004 X 120.000 1.016MM X 914.5016 X 3048 | 5112 LBS 2319 KG |
| Alloy 188 | 0.050 X 36.000 X 120.000 1.27MM X 914.4 X 3048 | 2070 LBS 939 KG |
| Alloy 188 | 0.050 X 36.000 X 120.010 1.27MM X 914.4 X 3048.254 | 4441 LBS 2014 KG |
| Alloy 188 | 0.050 X 36.001 X 120.000 1.27MM X 914.4254 X 3048 | 5140 LBS 2331 KG |
| Alloy 188 | 0.057 X 36.000 X 43.750 1.4478MM X 914.4 X 1111.25 | 29 LBS 13 KG |
| Alloy 188 | 0.057 X 36.000 X 120.000 1.4478MM X 914.4 X 3048 | 4857 LBS 2203 KG |
| Alloy 188 | 0.063 X 36.000 X 120.000 1.6002MM X 914.4 X 3048 | 3398 LBS 1541 KG |
| Alloy 188 | 0.063 X 36.002 X 120.000 1.6002MM X 914.4508 X 3048 | 5405 LBS 2452 KG |
| Alloy 188 | 0.063 X 36.003 X 120.000 1.6002MM X 914.4762 X 3048 | 4836 LBS 2194 KG |
| Alloy 188 - DUE DATE: 03-15-25 | 0.063 X 36.003 X 120.010 1.6002MM X 914.4762 X 3048.254 | 5500 LBS 2495 KG |
| Alloy 188 - DUE DATE: 01-26-25 | 0.072 X 36.000 X 120.000 1.8288MM X 914.4 X 3048 | 5500 LBS 2495 KG |
| Alloy 188 | 0.080 X 36.000 X 120.000 2.032MM X 914.4 X 3048 | 4761 LBS 2160 KG |
| Alloy 188 | 0.093 X 36.000 X 120.000 2.3622MM X 914.4 X 3048 | 7027 LBS 3187 KG |
| Alloy 188 | 0.093 X 36.001 X 120.000 2.3622MM X 914.4254 X 3048 | 4675 LBS 2121 KG |
| Alloy 188 | 0.100 X 36.000 X 120.000 2.54MM X 914.4 X 3048 | 4934 LBS 2238 KG |
| Alloy 188 | 0.100 X 36.000 X 120.010 2.54MM X 914.4 X 3048.254 | 1637 LBS 743 KG |
| Alloy 188 | 0.100 X 36.001 X 120.010 2.54MM X 914.4254 X 3048.254 | 858 LBS 389 KG |
| Alloy 188 | 0.125 X 36.000 X 120.000 3.175MM X 914.4 X 3048 | 3252 LBS 1475 KG |
| Alloy 188 - DUE DATE: 01-20-25 | 0.125 X 36.000 X 120.000 3.175MM X 914.4 X 3048 | 5500 LBS 2495 KG |
| Alloy 188 | 0.159 X 36.000 X 57.000 4.0386MM X 914.4 X 1447.8 | 106 LBS 48 KG |
| Alloy 188 | 0.159 X 36.000 X 120.000 4.0386MM X 914.4 X 3048 | 3756 LBS 1704 KG |