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OP 76
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EN 760
SA FB 2 55 AC
DIN 32 522
B FB 6 55455 AC 8MHP5
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Type/
Characteristics:
Special
agglomerated
fluoride-basic
type flux for
welding
austenitic
stainless steels
in combination
with wire
electrode
according to DIN
8556.
As to carbon
content of the
weld metal, AMA
OP 76 is
strictly
neutral, so
that, using
suitable wire
electrodes
steels having
extra low carbon
content can be
safely welded.
It has no
chromium
compensation
which is of
importance if
certain ferrite
content in the
weld deposit
must be
observed. Its
metallurgical
behavior as
regards silicon
and Manganese
burn off will
take place when
using wire
electrodes
having a high
Manganese
content. AMA OP
76 is designed
for welding
thick sections.
It is a hydrogen
controlled flux
deposition low
hydrogen weld
metal.
AMA OP 76 is
particularly
suited to be
used in tandem
and multi-wire
welding. It
produces smooth
and finely
ripped weld
beads merging
into the base
metal without
undercut.
AMA OP 76 can be
used on DC
(positive) or AC
up to 800 ˚C.
Damp flux shall
be redried by
backing at 300
350 ˚C. Grain
size according
to DIN 32
522:2-20. |
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Main constituents:
|
SiO2+TiO2 |
CaO+MgO |
Al203 + MnO |
CaF2 |
|
|
%15 |
%40 |
%20 |
%25 |
|
Basicity as to boniszewski:
~2.7
All-Weld metal
analysis (typical
values):
|
Weight-% |
|
|
With
Wire electrode |
C |
Cr |
Ni |
Mo |
Nb |
N |
|
|
|
30-51 |
<0.03 |
>18 |
>9 |
- |
- |
- |
|
30-52 |
<0.07 |
>18 |
>9 |
- |
>8 x C |
- |
|
30-53 |
<0.03 |
>18 |
>10 |
>2.5 |
- |
- |
|
30-54 |
<0.07 |
>18 |
>10 |
>2.5 |
>8 x C |
- |
|
30-56 |
<0.03 |
20 |
16 |
3.0 |
- |
0.15 |
|
30-55 |
<0.03 |
23 |
9 |
3.0 |
- |
0.15 |
|
30-57 |
<0.15 |
22 |
12 |
- |
- |
- |
|
30-58 |
<0.03 |
21 |
>60 |
9.0 |
3.5 |
- |
Mechanical properties
of all-weld metal (typical
values) :
|
With Wire electrode |
0.2% Proof stress
(N/mm2) |
1% Proof Stress
(N/mm2) |
Tensile Strength
(N/mm2) |
Elongation
Lo=5d(%) |
ISO-V Impact
energy (j)
+200C |
|
|
30-51 |
>320 |
>350 |
>550 |
>35 |
>75 |
|
|
30-52 |
>350 |
>370 |
>575 |
>30 |
>65 |
|
|
30-53 |
>320 |
>350 |
>550 |
>30 |
>75 |
|
|
30-54 |
>350 |
>370 |
>600 |
>30 |
>65 |
|
|
30-56 |
>380 |
>410 |
>600 |
>30 |
>120 |
|
|
30-55 |
>450 |
>500 |
>650 |
>25 |
>100 |
|
|
30-57 |
>320 |
>350 |
>650 |
>30 |
>75 |
|
|
30-58 |
>400 |
>420 |
>680 |
>30 |
>75 |
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Application:
welding of austenitic
stainless Cr Ni steel,
particularly thick
sections.
|
Materials |
Material-No. |
With wire electrode |
Material-No. |
|
|
X 2 Cr Ni 1911 |
1.4306 |
30-51 |
1.4316 |
|
X 5 Cr Ni 1810 |
1.4301 |
30-51 |
1.4316 |
|
X 6 Cr Ni Ti 1810 |
1.4541 |
30-52 |
1.4551 |
|
X 5 Cr Ni Nb 189 |
1.4543 |
30-52 |
1.4551 |
|
X 6 Cr Ni Nb 1810 |
1.4550 |
30-52 |
1.4551 |
|
X 12 Cr Ni Ti 189 |
1.4878 |
30-52 |
1.4551 |
|
X 2 Cr Ni Mo 17132 |
1.4404 |
30-53 |
1.4430 |
|
X 2 Cr Ni Mo 18142 |
1.4435 |
30-53 |
1.4430 |
|
X 5 Cr Ni Mo 17122 |
1.4401 |
30-53 |
1.4430 |
|
X 6 Cr Ni Mo Ti 17122 |
1.4571 |
30-54 |
1.4576 |
|
X 10 Cr Ni Mo Ti 1812 |
1.4573 |
30-54 |
1.4576 |
|
X 6 Cr Ni Mo Nb 17122 |
1.4580 |
30-54 |
1.4576 |
|
X 10 Cr Ni Mo Nb 1812 |
1.4583 |
30.54 |
1.4576 |
|
X 2 Cr Ni Mo N 22 5 |
1.4462 |
30-55 |
~1.4462 |
|
X 15 Cr Ni Si 20 12 |
1.4828 |
30-57* |
1.4829 |
|
X 12 Cr Ni Ti 18 9 |
1.4878 |
30-57* |
1.4828 |
|
X 2 Cr Ni 18 9 |
1.4306 |
30-56* |
1.4455 |
|
X 5 Cr Ni 1810 |
1.4301 |
30-56* |
1.4455 |
|
X 6 Cr Ni Ti 1810 |
1.4541 |
30-56* |
1.4455 |
|
X 5 Cr Ni Nb 189 |
1.4543 |
30-56* |
1.4455 |
|
X 6 Cr Ni Nb 1819 |
1.4550 |
30-56* |
1.4455 |
|
X 12 Cr Ni Ti 1819 |
1.4878 |
30-56* |
1.4455 |
|
X 2 Cr Ni Mo 17132 |
1.4404 |
30-56* |
1.4455 |
|
X 2 Cr Ni Mo 18142 |
1.4435 |
30-56* |
1.4455 |
|
X 5 Cr Ni Mo 17122 |
1.4401 |
30-56* |
1.4455 |
|
X 6 Cr Ni Mo Ti 17122 |
1.4571 |
30-56* |
1.4455 |
|
X 10 Cr Ni Ti Mo 1812 |
1.4573 |
30-56* |
1.4455 |
|
X 6 Cr Ni Mo Nb 17122 |
1.4580 |
30-56* |
1.4455 |
|
X 10 Cr Ni Mo Nb 1812 |
1.4583 |
30-56* |
1.4455 |
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*) If weld metal is required
to be fully austenitic |
|
Materials |
Material-No. |
With wire electrode |
Material-No. |
|
|
X 8 Ni 9 |
1.5662 |
AMA OE 2016nC |
1.4455 |
|
10
Ni 14 |
1.4573 |
AMA OE 2016nC |
1.4455 |
|
12
Ni 19 |
1.5680 |
AMA OE 2016nC |
1.4555 |
AMA OP 76 + 30-56
is out standing for
joining unalloyed and
low alloy steels to high
alloy steels.
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