ASM Failure Analysis Case Histories: Steelmaking and Thermal Processing Equipment
Case of Metal Dusting on HK40 HyL III Radiant Pipe Heat Exchanger
-
Published:2019
Abstract
In a HyL III heat exchanger's radiant pipes, metal dusting reduced the pipe thickness from 8.5 to 3 mm in just nine months, leaving craters on the inner surface. The pipes are fabricated from HK 40 alloy. The heated gas (400 to 800 deg C) consisted of CO, CO2, and H2, with a 4:1 CO/CO2 ratio. Metallographic investigations revealed that the surface of the attacked pipes consisted of (Cr, Fe) carbide. The metal dusting was the result of a decomposition process (CO to CO2 + C) that deposited C on the pipe surface. Because of the high temperature, the...
Sign in
ASM members
Member Sign InKoswara, Case of Metal Dusting on HK40 HyL III Radiant Pipe Heat Exchanger, ASM Failure Analysis Case Histories: Steelmaking and Thermal Processing Equipment, ASM International, 2019, https://doi.org/10.31399/asm.fach.steel.c9001714
Download citation file:
Join Failure Analysis Society
The ASM Failure Analysis Society (FAS) is a community where failure analysis professionals from all over the world can learn and grow in their field.