Products

YAWATA L-55W (For 490N/mmHigh Tensile Strength Steel)

Classification : AWS A 5.1 : E7016,  EN 499 : E42 2 B 1 2 H5

Approvals : ABS, TIS

Application : One side welding of pipes and general welding of 490 N/mm high tensile strength steels for ships, and pressure vessels.

YAWATA L-55W is a low hydrogen type electrode for one side welding in all positions. In low current range in root pass welding of pipes, a sound penetration bead free from blowholes is obtained due to stable arc, strong arc force, and excellent slag fluidity and coverage.
AWS A 5.1 : E7016
EN 499 : E42 2 B 1 2 H5
 
C
Si
Mn
P
S
Cr
Mo
Ni
V
C.L.
Req.    
≤0.15
≤0.75
≤1.60
0.035
0.035
≤0.20
≤0.30
≤0.30
≤0.08
1.75
Typ.    
0.07
0.63
1.20
0.010
0.011
0.11
0.01
0.07
0.01
1.40
Req. = Requirement
Typ. = Typical results
N.S. = Not Specified
C.L. = Combined Limit for Mn + Ni + Cr + Mo + V

 
  Tensile Strength
N/mm2 (kgf/mm2)
Yield Strength
N/mm2 (kgf/mm2)
Elongation
%
Charpy 
2V-notch

ที่ -49oC, J (kgf.m)
Diffusible H2 Content
 
Req.    ≥430 (42) ≥430 (42) ≥17 XX ≤ 10 ml/100g
Typ.    580 (59) 500 (51) ≥31 @ 0oC, 150 (15.3)
@ -49oC, 120 (10.4)
 ≤ 5 ml/100g
Diameter
/Length (mm)
2.6/300 3.2/350 4.0/400 5.0/450
Welding Position Current (A)
F 50-100 90-140 120-180 160-220
V, OH 40-80 80-120 100-160 154-200
One Side Welding 40-80 60-110 80-140 -
1. Use dry electrodes only. Damp electrodes should be re-dried at 300~350℃ for 60 minutes before use.
2. DC (-) should be used for one side welding.
3. 3.2 mm. diameter electrode is recommended for all positions welding of pipes with 6~15 mm. wall thickness.
4. Arc should started on a small plate or the side of the groove and cut after moving crater to the side of the groove.

Related industries