General Description

ER2209 is a filler metal to weld duplex stainless steels such as UNS S31803 and S32205. The weld metal has a high tensile and yield strength. This alloy offers good resistance to stress corrosion cracking and pitting corrosion.

ER2209 is used for pipe work and general fabrication in the offshore oil, gas and chemical process industries.

Chemical Composition

Grade C% Cr% Ni% Mo% Mn% Si% P% S% N% Cu%
ER2209 Max 0.03 21.5-23.5 7.5-9.5 2.5-3.5 0.5-2.0 Max 0.9 Max 0.03 Max 0.03 0.08-0.2 Max 0.75


AWS 5.9 Class ER2209

ASME SFA 5.9 Class ER2209


ER2209 is available on spool (Precision Layer Wound) and in cut straight lengths, welding strip EQ2209 is also available.

Straight Rods(TIG)-mm: 1.2-3.2

Spooled Wire (MIG)-mm: 0.8-1.2

Strip: 0.5mm thickness, 30mm/60mm width

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