K-71TM

Flux Cored Welding Wire
Flux Cored Welding Wire
K-71TM
K-71T Plus
For 490MPa high tensile steel
For 490MPa high tensile steel
Classifications
Classifications
EN ISO 17632-A:2008
EN ISO 17632-B:2008
AWS A5.20-07
: T46 2 P C/M 1 H5
: T49 2 T1-1C/MA H5
: E71T-1C/-1M
KS D 7104
JIS Z 3313
: YFW-A/C502R
: T49 2 T1-1 C/MA-U H10
EN ISO 17632-A:2008
EN ISO 17632-B:2008
AWS A5.20-07
Description
: T46 2 P C 1 H5
: T49 3 T1-1CA H5
: E71T-1C/-9C
KS D 7104
JIS Z 3313
Description
It is designed for welding of 490MPa high tensile steel with outstanding mechanical properties
Typical applications include machineries, shipbuilding, offshore structures, bridges and general fabrications
Wire is a titania type of flux cored wire for all-position welding
The shielding gas should be used Ar+20∼25%CO2 for welding, low spatter generation, smooth bead
shape, high X-ray safety
Welding positions
Polarity & shielding gas
It is designed for welding of 490MPa high tensile steel with outstanding mechanical properties.
Typical applications include machineries, shipbuilding, offshore structures, bridges and general
fabrications.
Wire is a titania type of flux cored wire for all-position welding.
It also provide excellent usability with stable arc, less spatter levels, smooth bead shape.
Welding positions
Polarity & shielding gas
Mix: Ar+20% CO2 (15~25ℓ/min),
CO2: 100% CO2
DCEP (DC+)
Typical chemical composition of all-weld metal (%)
Shielding gas
Mix
C
0.03
Si
0.59
P
0.013
S
0.010
T.S
(MPa)
El.
(%)
min. 390
min. 390
550
490~670
490~670
610
min. 22
min. 18
30
Refer to page 191~193 for more information on usage
When you use the mixture gas, get a good weldbility
Shielding gas
CO2
C
0.03
Si
0.40
Mn
1.20
P
0.015
S
0.012
Typical mechanical properties of all-weld metal
Y.S
(MPa)
Notes on usage and welding condition
CO2: 100%CO2 (15~25ℓ/min)
DCEP (DC+)
Typical chemical composition of all-weld metal (%)
Mn
1.44
Typical mechanical properties of all-weld metal
AWS A5.20
EN ISO 17632-B
Example
: YFW-C502R
: T49 3 T1-1CA H5
IV (J)
-30℃
-20℃
≥ 27
≥ 27
50
65
Shielding gas
Mix
Package
AWS A5.20
EN ISO 17632-B
Example
Y.S
(MPa)
T.S
(MPa)
El.
(%)
min. 390
min. 390
560
490~670
490~670
600
min. 22
min. 18
28
Notes on usage and welding condition
Dia. (mm)
Spool (kg)
Pailpack (kg)
1.2
1.4
1.6
5, 12.5, 15, 20
100 ~ 300
Refer to page 191~193 for more information on usage.
When heat input is excessive, the impact value tends
to be reduced. Therefore, perform welding with
selecting
-20℃
80
IV (J)
-30℃
≥ 27
≥ 27
60
Shielding gas
CO2
Package
Dia. (mm)
Spool (kg)
Pailpack (kg)
1.2
1.4
1.6
5, 12.5, 15, 20
100 ~ 300
Approvals
Shielding gas
ABS
BV
DNV
LR
Others
Mix
3YSA
SA3YM
ⅢYMS
3YS
RINA, CE, KS, JIS
198
Approvals
199

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