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GM 307

IDENTIFICATION
GM 307, ER 307

CLASSIFICATION
AWS / SFA 5.9 : ER 307,
EN 14343 (EN 12072, G 18 8 Mn)

DESCRIPTION
The wire gives a strong, ductile and tough austenitic deposit which work-hardens from about 200HV to 450HV. Also compatible with cast iron in some applications. The addition of about 6% Mn gives good crack resistance in difficult highly restrained joints.

CHEMICAL ANALYSIS (RANGE) %

C Mn Si Cr Ni Cu Mo S P
0.04 - 0.14 3.5 - 4.75 0.3 - 0.65 19.5 - 22.0 8 - 10.7 0.3 max 0.3 max 0.03 max 0.03 max

MECHANICAL PROPERTIES (RANGE)

UTS (MPa) EL (%) CVN Impact Value
    Temp Joules
590 min 30 min -50°C 95

TYPICAL APPLICATIONS

  • Joining, repair and build up of 13% Mn (Hadfield) steel castings combinations of mild, harden able or stainless steels with little or no preheat.
  • Use for mixed welding where deposits have to be heat treated and for surfacing and buttering.
  • The most versatile and economic solid wires for dissimilar welds.

SHIELDING GAS : Ar + 2 % O2 , Ar + 5 - 20 % CO2

WELDING MODE : (=+)

PACKING PARAMETERS

  Welding Parameters  
Size (mm) Pulsed arc (A) (V) Weight / Spool (kg)
0.8 100 - 150 22 - 27 12.5 / 15.0
1 120 - 200 24 - 28 12.5 / 15.0
1.2 140 - 220 24 - 28 12.5 / 15.0
1.6 180 - 260 24 - 30 12.5 / 15.0