Use & Application
For elevated temperature service, with reasonable degree of corrosion resistance in superheated steam, hot hydrogen gas and high Sulphur crude oils, where higher performance than 5%Cr- 0.5%Mo steels is required. Suitable for welding heat treatable, quenched and subsequently tempered steels as well as for tubes, resistant to caustic embrittlement for working temperatures up to 600°C. Used primarily for **boiler superheater tubing, heat exchangers, piping** and **pressure vessels in oil refineries and power plants**.
Alloy type
9%Cr-1%Mo martensitic alloy for elevated temperature service.
Microstructure
In the PWHT condition the microstructure consists of tempered bainite.
Materials to be welded

EN W.Nr.: X12CrMo 9 1 (1.7386), X7CrMo 9 1 (1.7388), GS-12CrMo 10 1 (1.7389).
ASTM: A387 gr. 9, A335 gr. 9, A234 gr. WP9 (fittings), A199 gr. T9, A213 gr. T9, A182 gr. F9, A336 gr. F9, A217 gr. C12.

Products of the line 9CrMo

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