ES TIG 90S-B9 is a 9CrMoVN-alloyed rod for the GTAW of high-temperature steels and steels for hot hydrogen service, especially in oil refiner- ies. It should preferably be used for 9% Cr steels, such as P 91/T 91 steels.
The alloy is modified in terms of the limits for impurity elements and is extremely “clean”.
This produces improved strength levels both at room temperature and at higher temperatures.
AWS has changed the classification for this prod- uct. The previous classification was A5.9 ER505.
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