Cromarod 309L is a rutile-coated electrode that produces an austenitic stainless filler metal containing 23% Cr and 13% Ni. Due to its high alloying and high ferrite content, the weld metal has good resistance to mixing with unalloyed and low alloyed base materials without the risk of hot cracking.

Buffer layers of non-alloyed and low alloy steels. Welding of coated and plate and “black-non-stainless” mixed joints. Fusion welding of AISI 309 grades. Welding of AISI 410 and 430 steels.

Cromarod 309L

Type of coating: Rutile
Welding current: AC, OCV ≥ 39 V, DC +
Reheating temperature: 350°C, 2 h
Composition p %: C 0.02, Si 0.8, Mn 0.8,Cr 23.0, Ni 13.0
Temperature of exfoliation: approx. 1000°C in air
Yield strength, Rp 0.2 %: 470 MPa
Breaking strength, Rm: 560 MPa
Elongation at break: 34 %
Impact strength, CV: -20°C – 48 J, -60°C – 45 J
Ferrite content: FN 9 (WRC-92)
Corrosion properties: Cromarod 309 L is generally used for interlayers and mixed joints,therefore corrosion resistance is not of primary importance. A double layer over low carbon steel generally equals the corrosion resistance of type 304L.
Approvals: LR, DNV, CE, BV, ABS, GL
Classification: EN 1600 E 23 12 L R 12, AWS A5.4, E 309L-17, ISO 3581-A E 23 12 L R 12