HJ172(NO Manganese-oxide flux)
HJ172 is a fused type no manganese-oxide flux with jadestone-like granule of white to light gray color, about 10-60 mesh in size. When this flux is used foraustenitic stainless steels containing titanium or niobium on DC+, the slag is easy to remove. ZT. HJ172 is a high basic type fused flux with the low oxideized slag and alloy element loss during welding, therefore, the weld metal shows high toughness.
In combination with suitable wires, this flux is recommended for welding of high chromium martensitic steel(such as 15Cr12MOWV) and stainless steels containing Nb and Ti.
GUIDELINES FOR USAGE:
1. Dry the flux at 300-400 for 2 hours before use.
2. Completely remove rust, oil and dirt from the groove surface prior to welding.
TYPICAL FLUX COMPOSITION RANGE: (%)