K-71UTM

For 490MPa high tensile steel and railcar, automotive, heavy equipment and general structural steel fabrications.

KS             D 7104 : YFL-A504R
AWS         A5.20 : E71T-9MJ
AWS         A5.36 : E71T12-M21A4-CS1
EN            ISO 17632-A : T42 4 P M21 1
EN            ISO 17632-B : T49 4 T1-1 M21 A-U
JIS            Z 3313 : T49 4 T1-1 M A-U

Description

Sizes (mm) Standard Welding Position Shielding gas Polarity
1.2~1.6 AWS A5.20
AWS A5.36
KS D 7104
JIS Z 3313
EN ISO 17632-A
EN ISO 17632-B
E71T-9MJ
E71T12-M21A4-CS1
YFL-A504R
T49 4 T1-1 M A-U
T42 4 M21 1
T49 4 T1-1 M21 A-U
F, HF, H, VU, VD, OH Ar+
20%CO2
DC(+)
 
Typical chemical composition all-weld metal (%)
C Si Mn P S Cr Ni Mo Remark
0.02 0.40 1.35 0.017 0.018 0.35
 
Typical mechanical properties of all-weld metal
Y.S (MPa) T.S (MPa) EI. (%) Hardness (HV) IV (J) PWHT
610 640 27 125 (-40℃)

Product Dimensions and Weld Current Range

 
Welding
Position
Sizes (mm) Ampere (A) Volt (V)
Min. Max. Min. Max.
F, HF 1.2mm 200 280 23 28
VU 1.2mm 180 240 23 27
OH 1.2mm 150 230 21 25
F, HF 1..4mm 220 340 23 30
VU 1..4mm 200 260 24 27
OH 1..4mm 160 230 22 25
F, HF 1.6mm 240 380 23 32
VU 1.6mm 220 260 24 27
OH 1.6mm 170 240 21 27