AMA OP181

سپتامبر 30, 2019ehsanhs95Variety Saw Fluxes

AMA OP181

Product Name:

F7PZ-EM12	F7AZ-EL12	AWS/ASME
F7AZ-EM12K	F7AZ-EM12

AWS/ASME:

SA AR 1 88 AC	DIN EN 760
B AR 1 88 AC 10 SKM	DIN 32 522

Standards:

Application/properties:
Agglomerated Aluminate-rutile type flux for welding general structural steels, pressure vessel and pipe steels, as well as fine grain structural steels having yield strength of up to 355N/mm2. AMA OP 181 produces a high silicon and manganese pick up and can therefore be used with 50-11, 50-12, electrode wires.It is particularly suited for high-speed welding applying the twin-wire process as well as in tandem and multi-wire welding. Owing to its metallurgical behavior AMA OP 181 can be preferably used for welding from both sides in one pass, e.g. IN longitudinal welding of large-diameter pipes and thin-walled spiral pipes.A further field of application is the welding of tube-web-tube points or finned tubes. On account of easy slag removal, AMA OP 181 preferably used in filled welding.It can be used on either DC or AC up to 1000A.

Damp flux shall be redried by baking at 300°C – 350°C
Grain size in accordance with DIN 32 522:2-16

Main constituents:

CaF2	Al2O3 + MnO	SiO₂ + TiO₂
10%	50%	30%

Basicity to boniszewskii: ~0.4

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
–	1.1-1.5	0.6-0.9	0.03-0.08	S1	50-11
–	1.3-1.7	0.6-0.9	0.04-0.08	S2	50-12
0.5	1.3-1.7	0.6-0.9	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	Elongation Lo = 5d %	Yield Strength (N/mm²)	Tensile Strength (N/mm²)	Heat Treatment
≥ 50	≥ 22	≥ 420	520-620	As Welded	50-11
≥ 50	≥ 22	≥ 450	560-660	As Welded	50-12
≥ 50	≥ 18	≥ 490	610-710	As Welded	50-14

Application:

Welding from both sides in one pass	Multi pass joint welding	Materials
With wire electrode	With wire electrode	General structural steels
50-12	50-11,50-12	St 37-2, USt 37-2, RSt 37-2
50-12	50-11,50-12	St 44-2, St 44-3
50-12	50-12	St 52-3**
With wire electrode	With wire electrode	Pipe Steels
50-12	50-11	StE 210.7, StE 240.7, StE 290.7
50-12	50-12	StE 320.7, StE 360.7
50-12	50-11	St 37, St 37.4, St 35.8
50-12	50-11	St 44, St 44.4, St 45.8
50-12	50-12	St 52, St 52.4
With wire electrode	With wire electrode	Boiler Plates
50-11,50-12	50-11,50-12	H I, H II
50-11,50-12	50-12	17 Mn 4, 19 Mn 5
50-14	50-14	15 Mo 3
50-22	50-22	13 Cr Mo 44*
With wire electrode	With wire electrode	Fie grain structural steels
50-12	50-11,50-12	StE 255, StE 355**

*Only for fillet welds or tube-web-tube welding on finned tubes.

**At service temperatures down to +0°C