HAYNES ® 188 alloy - Haynes International, Inc.

SCHEMATIC REPRESENTATION OF METALLOGRAPHJC TECHNIOUEUSED FOR EVALUATING ENVIRONMENTAL TESTSj Iv~rt:n.-0:‘E.~r1. Metal Loss = (A - 8)122. Average Internal Penetration = C3. Maximum Internal Penetration = D4. Average Metal Affected = ((A - 8)12) + C5. Maximum Metal Affected = ((A - 8)12) + DFABRICATION CHARACTERISTICSHEAT TREATMENTHAYNES 188 alloy is normallyfinal so ution heat-treated at2150°F (1175 C)for a timecommensurate with sectionthickness. Annealing duringtabricat on can be performed ateven lower temperatures, but afinal, subsequent solution heattreatment is needed to produceoptimum properties and structure. Please call HaynesInternational for further nformaton.EFFECT OF COLD REDUCT~ON UPON ROOM-TEMPERATURE PROPERTIES*%ColdReductionSubsequentTemperatureUltimateTensileStrength0.2% YieldStrengthElongationin 2 in. (51 mm)Ksi MPa Ksi MPa % Hardness0 137.2 945 66.9 460 54.2 RB 98.110 151.5 1045 105.9 730 45.1 R~32.120 None 165.9 1145 132.9 915 28.3 R~37.130 195.1 1345 167.0 1150 13.4 R~41.240 214.9 1480 176.8 1220 9.8 R~43.510 148.5 1025 91.2 630 41.4 R~29.720 1950°F 153.3 1055 87.8 605 41.0 R~27.830 158.3 1090 84.2 580 41.3 R~29.640 162.7 1120 90.8 625 39.8 R~31.110 143.0 985 64.7 445 50.1 R~21.920 2050°F 149.0 1025 71.4 490 47.2 R~24.511120°C~30 br s mir~ 155.2 1070 80.3 555 43.7 Ac 27.640 159.0 1095 86.9 600 43.2 Ac 29.510 139,6 965 61.9 425 55.3 RB95.620 2150°F 141.3 975 64.9 445 53.3 A9 97.130 142.8 985 66.5 460 51.8 RB 98.540 141.5 975 64.1 440 55.5 RB 97.2* Based upon rolling reduction taken upon 0.125 in. (3.2 mm) thick sheet. Duplicate tests.13 HAYNES 188 alloy