HAYNES ® 188 alloy - Haynes International, Inc.

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CREEP AND STRESS-RUPTURE STRENGTHHAYNES 188 alloy is a solidsolution-strengthenedmaterialwhich combines excellent hightemperaturestrength with goodtabricability at room temperature. It is particularly effectivefor very long-term applicationsat temperatures of 1200°F(650°C) or more. It is strongerthan nickel-base solid-solutionstrengthenedalloys, and farstronger than smple nckelchromium or iron-nicke -chromium heat-resistant alloys.This can allow for significantsection thickness reductionwhen it is substituted for thesematerials.COMPARISON OF SHEET MATERIALS: STRESS TO PRODUCE 1% CREEP IN 1000 HOURSTEST TEMPERATURE15 750°c 800°C 850°c23010x9 625615 5600(0ft 32900°c 950°c iooo°c1009080 706050403020CtaC’)(0Ui(0100.9 I I1400°F 1500°F1600°F1700 F1800°FTEST TEMPERATURECREEP AND RUPTURE STRENGTHCOLD-ROLLED AND 2150°F (1175C) SOLUTION-ANNEALED SHEETTestApproximate Initial Stress, Ksi (MPa)TemperatureCreep,to Produce Specified Creep in:°F(°C)% 10 Hrs. 100 Hrs. 1,000 Hrs.1400(760) 0.5 22.5 (155) 16.4 (115) 11.7 (81)1.0 25.5 (175) 18.5 (130) 13.3 (92)Rupture 43.0 (295) 32.0 (220) 23.0 (160)1500(815) 0.5 15.5 (105) 11.1 (77) 7.8 (54)1.0 17.6 (120) 12.6 (87) 8.8 (61)Rupture 31.0 (215) 21.7 (150) 15.0 (105)HAYNES 188 alloy 4
CREEP AND RUPTURE STRENGTHCOLD-ROLLED AND 2150°F (1175°C) SOLUTION-ANNEALED SHEET (continued)TestApproximate Initial Stress, Ksi (MPa)TemperatureCreep,to Produce Specified Creep in:°FrC)10 Hrs. 100 Hrs.1,000 Hrs.1600 (870) 0.5 10.7 (74) 7.5 (52) 5.0 (34)1.0 12.2 (84) 8.4 (58) 5.7 (39)Rupture 21.0 (145) 14.4 (99) 9.4 (65)1700(925) 0.5 7.3 (50) 4.9 (34) 3.1 (21)1.0 8.2 (57) 5.6 (39) 3.6 (25)Rupture 14.3 (99) 9.1 (63) 5.5 (38)1800 (980) 0.5 4.9 (34) 3.1 (21) 1.8 (12)1.0 5.6 (39) 3.6 (25) 2.1 (14)Rupture 9.1 (63) 5.4 (37) 2.4 (17)HOT-ROLLED AND 2150°F (1175°C) SOLUTION-ANNEALED PLATETApproximate Initial Stress, Ksi (MPa)Temperature Creep, to Produce Specified Creep in:°F (°C) 10 Hrs. 100 Hrs. 1,000 Hrs. 10,000 Hrs.1300 (705) 0.5 42.0 (289) 28.0 (193) 18.0 (124) —1.0 48.0 (339) 32.5 (224) 22.0 (152) —Rupture 76.0 (524)* 56.0 (386) 40.0 (276) 28.0 (193)*1400(760) 0.5 26.0 (179) 17.0 (117) 11.5 (79) —1.0 29.0 (200) 20.5 (141) 14.0 (97) —Rupture 52.0 (359) 37.0 (255) 26.0 (179) 18.5 (128)1500(815) 0.5 17.0 (117) 11.0 (76) 7.4 (51) —1.0 19.0 (131) 13.5 (93) 9.3 (64) —Rupture 36.0 (248) 25.0 (172) 17.5 (121) 12.0 (83)1600 (870) 0.5 11.5 (79) 7.5 (52) 5.0 (34)1.0 13.0 (90) 9.0 (62) 6.4 (44)Rupture 25.0 (172) 17.0 (117) 11.6 (80) 7.8 (54)*1700(925) 0.5 8.0 (56) 5.2 (30) 3.4 (23) —1.0 9.2 (63) 6.0 (41) 4.0 (28) —Rupture 16.5 (114) 11.1 (77) 7.3 (50) —1800 (980) 0.51.0Rupture•S gniticant extrapolation.5.66.311.5(39)(43)(79)3.6 (25)3.9 (27)7.0 (48)2.3 (16)2.9 (20)4.3 (30)HAYNES 188 alloy
Page 6 and 7: TYPICAL TENSILE PROPERTIESCOLD-ROLL
Page 8 and 9: TYPICAL PHYSICAL PROPERTIESTemp.,
Page 10 and 11: LOW CYCLE FATIGUE PROPERTIESHAYNES
Page 12 and 13: COMPARATIVE OXIDAT~ON RESISTANCE IN
Page 14 and 15: WELDINGHAYNES 188 alloy is readi yw
Page 16: STANDARD PRODUCTSBy Brand or Alloy

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