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Finox 4370 AC is an electrode for joint welding of unalloyed and low-alloyed steels with high-alloyed steel, cast steel types and for austenite-ferrite-joints at working temperatures of up to 300 °C. This stick electrode is suited for welding of difficult-to-weld steel with high carbon content as well as austenitic manganese steel, for buffering layers and for wear-resistant surfacing when exposed to work-hardening shock, pressure and rolling load. The weld metal is fully austenitic, corrosion-resistant, scale-resistant up to 850 °C and can be work-hardened up to a hardness of 350 HB.

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DIN EN ISO 3581-A E 18 8 Mn R 12
AWS A 5.4 ≈ E 307-16
Material no. 1.4370
  • Black-and-white joints (Construction Steel and stainless steels)
  • Manganese Hard Steel
  • High-strength, alloyed and unalloyed heat-treated steel
  • Steels with a higher carbon content
  • Intermediate layers for hard-surfacing

PA      PB     PC      PD      PF

Type of current AC
DC plus pole

2.5 mm
3.25 mm
4.0 mm

Weld Metal Composition C Si Mn Cr Ni Structure
  0.1 % 0.9 % 6 % 19 % 9 % Austenite

Deutsche Bahn      TÜV      CE Conformité Européenne

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