Solid Wire Electrode BA-MIG 420 for MIG/MAG Welding

SFA 5.9: ER420

Main Application

BA-MIG 420 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. BA-MIG 420 is similar to BA-MIG 410, but with higher chromium and carbon content which increases the wear resistance.


Typical analysis and chemical composition acc. to AWS A5.9

Wire electrodeCSiMnMoNiCrPSCu total
Typical analysis BA-MIG 420 0.30 0.35 0.45 0.25 0.30 13.0 0.02 0.02 0.3
ER420 acc. to AWS A5.9 0.25 - 0.40 0.5 0.6 0.75 0.6 12.0 - 14.0 0.03 0.03 0.75

All - Weld Metal Mechanical Properties / Welding Data:

Heat Treatment

PWHT: 750°C x 1h

Yield Strength Re, N/mm² (ksi)

≥ 400 (58)

Tensile Strength Rm, N/mm² (ksi)

≥ 470 (68)

Elongation A5 [%]

≥ 16

Impact Energy ISO-V, J (ft lbs)




DC +

Shielding Gas

ISO 14175: M12/M13

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.

Package Forms

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


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.


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