Use & Application
High strength low alloy steels with improved elevated temperature performance over that of CMn steels. Used for the fabrication of vessel and associated pipework demanding creep rupture strength and ductility up to about 450°C. Good toughness at low temperatures. Fabrication of higher strength steels for use in the stress relieved condition. For **offshore oil well-head process pipework and fittings**, these low nickel consumables satisfy NACE MR0175 requirements intended to ensure resistance to sulphide-induced stress corrosion cracking in sour service, combined with good sub-zero toughness. Also finds applications for the repair of medium strength low alloy steel castings where a stress relief only (rather than N+T) is to be applied. The actual preheat and PWHT requirements will depend on the base material being welded. Normally preheat/interpass temperatures will be in the range 100-250°C. PWHT required.
Alloy type
Low alloy steel consumables with MnMo additions for welding high strength steels with ultimate tensile strength to 620 MPa (90ksi).
Microstructure
In the stress relieved condition the microstructure consists of tempered bainite.
Materials to be welded

EN W.Nr.: P295 G H, P355 G H, 16Mo2, 17Mo3, 14Mo6, S275, S355, S420, S275, S355, S420.
ASTM: A 487 Gr 2A, 2B & 2C.

Products of the line 80-90ksi

Product name Material Processes
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