|AMA OP129||Product Name:|
|DIN EN 760 SA CS 1 77 AC|
DIN 32 522 B CS 1 77 AC 10 M
Agglomerated Calcium-Silicate type flux for welding general structural steels, pressure vessel steels, pipe steels as well as fine grain structural steels. It produces a mean silicon pick-up and when used with wire electrodes, 50-14, 50-15, 50-11, 50-12 also a manganese pick-up. The neutral point for manganese is at approximately 2%. AMA OP 129 can therefore be combined with wire electrodes having a low manganese content.It is particularly for twin-wire, tandem and multi-wire at high speeds. AMA OP 129 is likewise suited for welding from both sides in one pass. For increased weld metal toughness, wire electrode containing molybdenum 50-14 should be preferably used. AMA OP 129 can be used on either DC or AC up to 1000A (in single wire welding).Slag removal is easy. The resulting slag is short, i.e., girth seams on work pieces having a small diameter can be welded without the danger of the slag running off.
Basicity to boniszewskii: ~1.0
Metallurgical behavior: Pick-up and burn-off the alloying elements Si and Mn as a function of the alloy
Content of the wire electrode, DVS Merkblatt 0907, part 1
all-weld metal analysis( typical values ):
Mechanical properties of all-weld metal (typical values ):
For welding from both side in one pass, especially in multi-wire welding 50-14 wire electrode should be used because of the fine-grain formation caused by molybdenum.
* At service temperatures down to -20°C
** At service temperatures down to -40°C