|
|
|
 |
|
|
|
 |
 |
|
OP 143
Download this
page
As
[PDF]
EN 760
S A CS 1 98 AC
DIN 32 522
B CS 1 98 AC 12 M
Application / Properties:
Agglomerated
Manganese-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 OP 143 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
OP 143 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.g., girth
seams on work pieces
having a small diameter
can be welded without
the danger of the slag
running off.
Damp flux shall be
redried by baking at
300-350C
Grain size in according
with DIN 32 522:2-20.
Main constituents:
|
SiO2+TiO2 |
CaO+MgO |
Al203 + MnO |
CaF2 |
|
|
%40 |
%25 |
%25 |
%10 |
|
Basicity to boniszewsk:
~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):
|
With
Wire electrode
Weight-% |
|
|
|
C |
Si |
Mn |
Mo |
|
50-11 |
0.04-0.08 |
0.7-1.1 |
1.1-1.4 |
- |
|
50-12 |
0.04-0.08 |
0.7-1.1 |
1.5-1.8 |
- |
|
50-14 |
0.04-0.08 |
0.7-1.1 |
1.5-1.8 |
0.5 |
Mechanical properties
of all-weld metal (typical
values) :
|
With Wire electrode |
Heat treatment |
Yield Strength
(N/mm2) |
Tensile Strength
(N/mm2) |
Elongation
Lo=5d(%) |
ISO-V Impact
energy (j)
+200C ±00C
-200C |
|
|
50-11 |
As - Welded |
>360 |
460-560 |
>24 |
>90
>50
>30 |
|
|
50-12 |
As - Welded |
>400 |
530-630 |
>24 |
>90
>50
>35 |
|
|
50-14 |
As - Welded |
>480 |
600-700 |
>20 |
>65
>50
>35 |
|
Application:
|
Materials |
Multipass joint
welding |
Welding from both
sides in one pass |
|
|
General structural steels |
With wire electrode |
With wire electrode |
|
StE37-2,Ust37-2,RSt37-2 |
50-11 |
50-12,50-14 |
|
St 37-3,St 44-2,St 44-3,St
52-3 |
50-12 |
50-12,50-14 |
|
Pipe steels |
With wire electrode |
With wire electrode |
|
StE 210.7, StE 240.7, StE
290.7 |
50-11 |
50-12,50-14 |
|
StE 320.7, StE 360.7 |
50-12 |
50-12,50-14 |
|
St 37, St 37.4, St 45.8 |
50-11 |
50-12,50-14 |
|
St 44 , St 44.4, St 37.8 |
50-12 |
50-12,50-14 |
|
St 52, St 52.4 |
50-12 |
50-12,50-14 |
|
X42 |
50-11 |
50-12,50-14 |
|
X46, X52,X56 |
50-12 |
50-12,50-14 |
|
X60, X65,X70 |
50-14 |
50-12,50-14 |
|
Boiler plates |
With wire electrode |
With wire electrode |
|
H I, H II |
50-11 |
50-12,50-14 |
|
17 Mn 4, 19 Mn 5 |
50-12 |
50-12,50-14 |
|
Fine grain structural steels |
With wire electrode |
With wire electrode |
|
StE 255 , WStE 255 |
50-12 |
50-12,50-14 |
|
StE 285, WStE 285 |
50-12 |
50-12,50-14 |
|
StE 315, WStE 315 |
50-12 |
50-12,50-14 |
|
StE 355, WStE 355 |
50-12 |
50-12,50-14 |
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.
|
|
|
