SFA 5.9: ER420

SFA 5.9: ER420

SFA 5.9: ER420 is a solid wire electrode for GMAW, often used for surfacing applications which need superior resistance to abrasion. It requires preheat and inter-pass temperatures ≥ 225ºC, followed by slow cooling. Post weld heat treatment is used to temper the weld deposit. SFA 5.9: ER420 is similar to SFA 5.9: ER410, but with higher chromium and carbon content which increases the wear resistance.

Characteristics and Application

Chemical Composition (%)

Welding Positions

Package Forms

Spools BS300/15 kg as standard package form for GMAW wire electrodes.

Mechanical Properties of Deposited Metal

Stainless welding wire FOR MIG/MAG WELDING

Classification:

SFA 5.9: ER420

Diameter

 1,0 - 1,6 mm; sizes and tolerances acc. to ISO 544 and AWS A5.9.

Wire Electrode Surface

Smooth finish free from surface defects and foreign matter.

Base Materials

AISI 420, X12Cr13: hardfacing results in higher hardness than with ER410.

Suitable fluxes: BF 38, WP 380

Flux type suitability is strongly dependent on its application. In combination with the wire electrode the most suitable flux should match the requirements of the plate material as closely as possible under the existing welding conditions. Further information can be obtained from the technical flux data sheets.