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Supercored 71
FLUX CORED WIRE
AWS A5.20 / ASME SFA5.20 E71T-1
JIS Z3313 YFW-C502R
l Applications
All position welding of machinery, shipbuilding, bridges. Impact values of weld metal are good.
l Characteristics on Usage
Supercored 71 is a flux cored wire which has been designed to get a good usability in all position for wide range of welding currents. With its quiet and smooth arc, its slag detachability is very good.
l Notes on Usage
a) Proper preheating(50~150°C)(122~302℉) and interpass temperature must be used in order to release hydrogen which may cause cracking in weld metal when electrodes are used for medium and heavy plates.
b) One-side welding defects such as hot cracking may occur with wrong welding parameter, such as high welding speed.
c) Use 100% CO2 gas.
d) Refer to page 168 for storage instructions.
l Welding Position (All-Position) Current Shielding Gas
DC+ CO2
l Typical Chemical Composition of All-Weld Metal (%)
|
C |
Si |
Mn |
P |
S |
|
0.03 |
0.51 |
1.26 |
0.010 |
0.011 |
l Typical Mechanical Properties of All-Weld Metal
|
Y.S N/mm2 (lbs/in2) |
T.S N/mm2 (lbs/in2) |
EL. (%) |
Temp. ℃(℉) |
CVN-Impact Value J (ft·lbs) |
|
545 (79,100) |
572 (83,100) |
28 |
0 (32) -20 (-4) |
160 (119) 70 (52) |
l Approval
KR, ABS, LR, BV, DNV, GL, NK, TÜV, CWB, Ü-SIGN, RINA
l Packing (Including Ball Pac)
|
Dia.(mm) (in) |
1.0 |
1.2 |
1.4 |
1.6 |
Spool(kg) |
12.5 |
15 |
20 |
|
0.039 |
0.045 |
0.052 |
1/16 |
(lbs) |
28 |
33 |
44 |
|
|
Ball Pac |
|
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l Sizes Available and Recommended Currents (Amp.)
|
Size mm (in) |
1.2 (0.045) |
1.4 (0.052) |
1.6 (1/16) |
|
F&HF |
120~300 |
150~350 |
200~400 |
|
V-up,OH |
120~260 |
140~270 |
180~280 |
|
V-down |
200~300 |
220~320 |
250~300 |
