K-71T

Welding of 490MPa high tensile steels with outstanding mechanical properties.

KS         D 7104 : YFW-C50DR
AWS     A5.20 : E71T-1C
AWS     A5.36 : E71T1-C1A0-CS1-H8
EN        ISO 17632-A : T42 0 P C1 1 H10
EN        ISO 17632-B : T49 0 T1-1 C1A-U H10
JIS        Z 3313 : T49J 0 T1-1 CA-U H10

Category:
K-70T
K-71TLF

Description

Sizes (mm) Standard Welding Position Shielding gas Polarity
1.2~2.4 AWS A5.20
AWS A5.36
JIS Z 3313
KS D 7104
EN ISO 17632-A
EN ISO 17632-B		 E71T-1C
E71T1-C1A0-CS1-H8
T49J 0 T1-1 CA-U H10
YFW-C50DR
T42 0 P C1 1 H10
T49 0 T1-1 C1A-U H10		 F, HF, H, VU, VD, OH CO2 DC(+)
 
Typical chemical composition all-weld metal (%)
C Si Mn P S Cr Ni Mo Remark
0.04 0.55 1.25 0.015 0.012 – – – –
 
Typical mechanical properties of all-weld metal
Y.S (MPa) T.S (MPa) EI. (%) Hardness (HV) IV (J) PWHT
520 580 29 – 70 (0℃)
55 (-20℃)		 –
Product Dimensions and Weld Current Range
 
Welding
Position		 Sizes (mm) Ampere (A) Volt (V)
Min. Max. Min. Max.
F, HF 1.2mm 200 280 24 29
VU 1.2mm 180 240 24 28
OH 1.2mm 150 230 22 26
F, HF 1.4mm 220 340 24 31
VU 1.4mm 200 260 25 28
OH 1.4mm 160 230 23 26
F, HF 1.6mm 240 380 24 33
VU 1.6mm 220 260 25 28
OH 1.6mm 170 240 22 28

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