HAYNES® 556™ alloy - Haynes International, Inc.

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Comparative 1800°F (980°C) Mixed Gas Carburization TestsAlloy 800H1800°F (980°C) for 55 HoursHAYNES ® 556 TM alloyHASTELLOY X alloyAlloy 600INCONEL alloy 601INCONEL alloy 61712 3 4 5 6 7Carbon Absorption Per Unit Area (mg/cm 2 )Typical Carburized Microstructures (Unetched) After ExposureFor 55 Hours At 1800°F (980°C)4471444876HAYNES 556 alloy INCONEL alloy 617Note: Alloy 617 is carburized to the center of the sample.HAYNES ® 556 TM alloy 8
OXIDATION RESISTANCEHAYNES ® 556 alloy exhibitsgood resistance to both air andcombustion gas oxidizingenvironments, and can be usedfor long-term exposure attemperatures up to 2000°F(1095°C). For exposures ofshort duration, 556 alloy can beused at higher temperatures.Comparative Oxidation Resistance in Flowing Air*MaterialX alloy556 alloyalloy 601alloy 800H446 SS316 SS1800°F (980°C) - 1008 Hours 2000°F (1095°C) - 1008 HoursMetal Loss Average Metal Affected** Metal Loss Average Metal AffectedMils µm Mils µmMils µm Mils µm0.3 8 0.9 251.5 40 2.7 700.4 10 1.1 301.0 25 2.6 650.5 15 1.3 351.2 30 2.6 650.9 25 1.8 455.4 135 7.4 1901.3 35 2.3 6013.1 335 14.5 37012.4 315 14.3 365>69.0 >1750 ConsumedSamples cycled to room temperature once-a-week* Flowing air at a velocity of 7.0 feet/minute (212.0 cm/minute) past the samples.** Metal Loss + Average Internal PenetrationMetallographic Technique used for Evaluating Environmental Tests1. Metal Loss = (A - B)/22. Average Internal Penetration = C3. Maximum Internal Penetration = D4. Average Metal Affected = ((A - B)/2) + C5. Maximum Metal Affected = ((A - B)/2) + D9HAYNES ® 556 TM alloy
Page 1 and 2: HIGH-TEMPERATURE ALLOYSHAYNES ® 55
Page 3 and 4: PRINCIPAL FEATURESHigh Strength and
Page 5 and 6: Field Experience - Municipal Waste
Page 7: Comparative 1700°F (925°C) Mix Ga
Page 11 and 12: APPLICATIONSThis high-temperature f
Page 13 and 14: OTHER HIGH TEMPERATURE ENVIRONMENTS
Page 15 and 16: Typical Physical Properties (contin
Page 17 and 18: TYPICAL TENSILE PROPERTIESCold-Roll
Page 19 and 20: TYPICAL CREEP AND STRESS-RUPTURE PR
Page 21 and 22: Thermal Stability (continued)Room-T
Page 23 and 24: Fabrication Characteristics (contin
Page 25 and 26: Manual Gas Tungsten Arc WeldingV-or
Page 27 and 28: MACHININGHAYNES ® 556 alloy is sim

HAYNES® 556™ alloy - Haynes International, Inc.

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