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OP 120 TT
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EIN 760
SA FB 1 66 AC H 5
DIN 32 522
B FB 1 66 AC 10 MHP 5
|
Type/
Characteristics:
Agglomerated
fluoride-basic
type flux for
welding general
structural
steels
pressure
vessels, pipe
steels.
Owing to the
manganese
pick-up caused
by OP120TT, low
manganese wire
electrodes will
find an extended
field of
application.
OP120TT is
outstanding for
tandem,
multi-wire and
twin-wire
welding. It
delivers a weld
metal featuring
excellent
toughness
properties and
crack
resistance.
OP120TT can be
used on either
DC (positive) or
AC up to
approximately
1000A. Damp flux
shall be redried
by baking at
300-350°C.
Grain size
according to DIN
32 522:2-20.
-Main
constituents. |
|
Main constituents:
|
SiO2+TiO2 |
CaO+MgO |
Al203 + MnO |
CaF2 |
|
|
%15 |
%35 |
%20 |
%30 |
|
Basicity as to boniszewsk:
~3.1
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 |
C |
Si |
Mn |
Mo |
Cr |
Ni |
|
|
|
50-11 |
0.04-0.08 |
0.10-0.25 |
0.7-1.0 |
- |
- |
- |
|
50-12 |
0.04-0.08 |
0.20-0.40 |
1.0-1.4 |
- |
- |
- |
|
50-15 |
0.04-0.08 |
0.20-0.40 |
1.4-1.7 |
- |
- |
- |
|
50-14 |
0.04-0.08 |
0.20-0.40 |
1.0-1.4 |
0.5 |
- |
- |
|
50-22 |
0.04-0.08 |
0.20-0.40 |
1.0-1.4 |
0.5 |
1.0 |
- |
|
50-24 |
0.04-0.08 |
0.20-0.50 |
1.3-1.6 |
- |
- |
1.0 |
Mechanical properties
of all-weld metal (typical
values) :
|
With Wire electrode |
Heat treatment |
Tensile Strength
(N/mm2) |
Yield Strength
(N/mm2) |
Elongation
Lo=5d(%) |
|
|
50-11 |
As - Welded |
440-540 |
>360 |
>25 |
|
|
50-12 |
As - Welded |
500-600 |
>420 |
>24 |
|
|
50-15 |
As - Welded |
550-650 |
>450 |
>24 |
|
|
50-14 |
As - Welded |
600-700 |
>500 |
>22 |
|
|
50-22 |
Tempered(1) |
570-670 |
>500 |
>22 |
|
|
50-22 |
Norm+Temp(2) |
430-530 |
>310 |
>28 |
|
|
50-24 |
As - Welded |
540-640 |
>470 |
>25 |
|
|
ISO-V Impact
energy (j)
|
|
|
Heat treatment |
+20 |
±0 |
-20 |
-40 |
-600C |
|
|
|
50-11 |
As - Welded |
>150 |
>120 |
>90 |
- |
- |
|
50-12 |
As - Welded |
>160 |
>130 |
>100 |
>70 |
- |
|
50-15 |
As - Welded |
>160 |
>130 |
>100 |
>70 |
- |
|
50-14 |
As - Welded |
>130 |
>90 |
70 |
>40 |
- |
|
50-22 |
Tempered(1) |
200 |
>150 |
- |
- |
- |
|
50-22 |
Norm+Temp(2) |
- |
>200 |
- |
- |
- |
|
50-24 |
As - Welded |
- |
>140 |
>100 |
>70 |
>50 |
1) tempered :
700-720°C
2) norm + temp :
920°C/air+700-720°C
Application:
|
Materials |
Multipass joint
welding |
|
|
Fine grain structural steels |
With wire electrode |
|
StE 255 , WStE 255 |
50-11 |
|
StE 285 , WStE 285 |
50-11 |
|
StE315 , WStE 315 |
50-11 |
|
StE355 , WStE 355 |
50-11,50-12 |
|
StE420 , WStE 420 |
50-15,50-24 |
|
StE460 , WStE 460 |
50-15,50-24 |
|
StE500 , WStE 500 |
50-15(1),50-24(1) |
|
TStE255 , EStE 255 |
50-12 |
|
TStE285 , EStE 285 |
50-12 |
|
TStE315 , EStE 315 |
50-12 |
|
TStE355 , EStE 355 |
50-12 |
|
TStE380 , EStE 380 |
50-15,50-24 |
|
TStE420 , EStE 420 |
50-15,50-24 |
|
General
structural steels |
With wire electrode |
|
St 37-2, USt 37-2 |
50-11 |
|
RSt 37-2 |
50-11 |
|
St 44-2, St 44-3 |
50-11 |
|
St 52-3 |
50-11,50-12 |
|
Pipe steels |
With wire electrode |
|
StE 210.7, StE 240.7 |
50-11 |
|
StE 290.7 |
50-11 |
|
StE 360.7 |
50-11,50-12 |
|
St 37.0, St 37.4,St 35.8 |
50-11 |
|
St 44.0, St 44.4,St 45.8 |
50-11 |
|
St 52.0, St 52.4 |
50-11,50-12 |
|
Boiler plates steels |
With wire electrode |
|
HI,HII, 17Mn 4 |
50-11 |
|
19 Mn 5 |
50-11,50-12 |
|
Creep resistant steels |
With wire electrode |
|
15 Mo3 |
50-14 |
|
13CrMo44 |
50-22 |
1) Also for
stress-relived condition
Approval:
LRS
|
|
|
