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Sandvik 25.10.4.LR (Covered electrodes)

Datasheet updated 2014-08-19 16:17:14 (supersedes all previous editions)

Sandvik 25.10.4.LR is a covered electrode with rutile-basic coating and about 105% metal recovery used for welding of super-duplex (austenitic-ferritic) stainless steels of UNS S32750/S32760 type (e.g. Sandvik SAF 2507 and Zeron* 100). The weld metal has especially good properties under severely corrosive conditions. Examples of properties are:

Excellent stress corrosion cracking resistance in chloride-containing media
Excellent pitting resistance
High resistance to general corrosion
High resistance to erosion corrosion and corrosion fatigue
Spray transfer gives a bead with a finely rippled surface. There is little spatter and very good slag removal.

Standards

AWS E2594-16
EN number E 25 9 4 N L
Product standards

EN ISO 1600
ASME/AWS SFA5.4
Approvals

DNV, TüV

Chemical composition - all-weld metal

The following data is valid for non heat treated all-weld metal.

CSiMnPSCrNiMoNChemical composition, wt%
0.03 0.5 0.7 ≤0.030 ≤0.025 25 9.5 4.0 0.25
Microstructure - all-weld metal

Austenitic-ferritic (Duplex) microstructure with approximately 40 FN calculated from the WRC 92 diagram