UP-101 1Ni¼Mo (S3 1Ni¼Mo)
SAW (submerged arc welding) wires for high strength structural steel

Classification DIN EN ISO

26304-A SZ 3Ni1Mo0,2, 14171-A S3Ni1Mo0,2

Material No.


Classification AWS

A5.23 ENi5, A5.23 ENi6



Characteristics and application

Submerged arc welding wire for high strength quenched and tempered structural steels. Applications will be found in the offshore industry, shipbuilding and general structural fabrication.

Base materials

For high strength low alloy fine-grained steels with yield strengths up to ~500MPa (72ksi).
S450J2, S460N, P460QL1-P500QL1, P460QL2-P500QL2, S460QL-S500QL, S460QLN-S500QLN, P460QL1-P500QL1, P460QL2-P500QL2
API: 5L grades X60-X70

Typical analysis in %

C: 0,10
Si: 0,22
Mn: 1,45
Ni: 0,90
Mo: 0,25

Typical heat treatment

Welding procedure (including preheat temperature, interpass temperature and PWHT) will be dependent on the base material being welded, including its thickness, and any applicable design codes.