AMA OP119

سپتامبر 23, 2019ehsanhs95Variety Saw Fluxes

AMA OP119

Product Name:

	F7P2-EM12	F6A0-EL12	AWS/ASME
		F7A2-EM12

AWS/ASME:

SA CS 1 98 AC	EN 760
B CS 1 98 AC 12 M	DIN 32 522

Standards:

Application/properties:
Agglomerated Calcium-Silicate type flux for welding general structural steels, pressure vessel steels, pipe steels as well as fine grain structural steels.It causes a relatively high silicon pick-up and when using wire electrodes 50-11, 50-12, 50-15, also a manganese pick-up. The neutral point for manganese is suited at approximately 2.5%, thus the flux being able to be used with low manganese electrode wires. AMA-OP119 is particularly suited for twin-wire, tandem and multi-wire welding at relatively high speed. It is likewise suited for welding from both sides in one pass. For increased weld metal toughness, wire electrodes containing molybdenum 50-14 should be preferably used. AMA-OP119 can be used on either DC or AC up to approximately 1200A (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.

Damp flux shall be re-dried by baking at 300°C – 350°C
Grain size in accordance with DIN 32 522:2-20

Main constituents:

CaF2	Al2O3 + MnO	CaO + MgO	SiO₂ + TiO₂
10%	25 %	25%	40%

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 ):

Weight %				With Wire Electrode
Mo	Mn	Si	C	DIN/EN	AMA Trade Name
–	1.1-1.4	0.7-1.1	0.04-0.08	S1	50-11
–	1.5-1.8	0.7-1.1	0.04-0.08	S2	50-12
0.5	1.5-1.8	0.7-1.1	0.04-0.08	S2Mo	50-14

Mechanical properties of all-weld metal (typical values ):

Impact energy (Joule) ISO – V				Elongation Lo = 5d %	Yield Strength (N/mm²)	Tensile Strength (N/mm²)	Heat Treatment	With Wire Electrode
-20°C		±0°C	+20°C	Elongation Lo = 5d %	Yield Strength (N/mm²)	Tensile Strength (N/mm²)	Heat Treatment	AMA Trade Name
30<	> 50		> 90	> 24	> 360	460-560	As Welded	50-11
35<	> 50		> 90	> 24	> 400	530-630	As Welded	50-12
35<	> 50		> 65	> 20	> 480	600-700	As Welded	50-14

Mechanical properties of welded joints( typical values ):

Welding from both sides in one pass	Multi pass joint welding	Materials
With wire electrode	With wire electrode	General structural steels
50-11,50-14	50-11	St 37-2, USt 37-2, RSt 37-2
50-11,50-14	50-12	St 37.3, St 44.2, St 44.3, St 52.3
With wire electrode	With wire electrode	Pipe Steels
50-12,50-14	50-11	StE 210.7, StE 240.7, StE 290.7
50-12,50-14	50-12	StE 320.7, StE 360.7
50-12,50-14	50-11	St 37.0, St 37.4, St 45.8
50-12,50-14	50-12	St 44, St 44.4, St 37.8
50-12,50-14	50-12	St 52, St 52.4
50-12,50-14	50-11	X42
50-12,50-14	50-12	X46, X52, X56
50-12,50-14	50-14	X60, X65, X70
With wire electrode	With wire electrode	Boiler plates
50-12,50-14	50-11	H I, H II
50-12,50-14	50-12	17 Mn 4, 19 Mn 5
With wire electrode	With wire electrode	Fine grain structural steels
50-12,50-14	50-12	StE 255, WStE 255
50-12,50-14	50-12	StE 285, WStE 285
50-12,50-14	50-12	StE 315, WStE 315
50-12,50-14	50-12	StE 355, WStE 355

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.

aproval: LRS، GL