Products
YAWATA L-59 (For 490N/mm2 High Tensile Strength Steel)
Classification : AWS A 5.1 : E7016, JIS Z 3211 : E4916U
Approvals : ABS, BV, NK
Application : Welding of 490 N/mm2 high tensile strength steels for ships, structures, pressure vessel industry, shipbuilding and bridges.
YAWATA L-59 is a low hydrogen type electrode for all positions welding. Smooth arc, easy slag removal and provide good weld appearance. High performance X-ray quality and excellent mechanical properties.
AWS A 5.1 : E7016
JIS Z 3211 : E4916U
ISO 2560 : E 51 5 B 26 (H)
EN 499 : E 42 2 B 12 H5
EN 499 : E 42 2 B 12 H5
|
C
|
Si
|
Mn
|
P
|
S
|
Cr
|
Mo
|
Ni
|
V
|
C.L.
|
|
|
Req.
|
≤0.15
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≤0.75
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≤1.60
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≤0.035
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≤0.035
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≤0.20
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≤0.30
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≤0.30
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≤0.08
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≤1.75
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|
Typ.
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0.08
|
0.54
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1.10
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0.007
|
0.009
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0.09
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≤0.01
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0.09
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≤0.01
|
1.10
|
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 | ≥430 | ≥17 | -20oC= ≥27 (AWS A5.1) -29oC/-30oC = ≥27 (AWS A5.1) -29oC/-30oC = ≥47 (ISO 2560-A) -49oC/-50oC = ≥47 (ISO 2560-A) |
≤ 10 ml/100g |
| Typ. | 580 | 490 | ≥31 | @ -20oC, ≥ 170 @ -49oC, ≥ 134 |
≤ 5 ml/100g |
| Diameter/ Length (mm) |
2.6/300 | 3.2/350 | 4.0/400 | 5.0/450 |
| Welding Position | Current (A) | |||
| F | 70-10 | 100-140 | 150-190 | 190-240 |
| V-up, OH | 60-90 | 80-120 | 110-150 | 130-170 |
1. Use dry electrodes only. Damp electrodes should be re-dried at 300～350℃ for 60 minutes.
2. Backstep method should be applied to prevent blowholes and pits at arc starting and arc length should be kept as short as possible during welding.
3. All water, rust and oil in groove should be completely removed to prevent cracks and blowholes.
2. Backstep method should be applied to prevent blowholes and pits at arc starting and arc length should be kept as short as possible during welding.
3. All water, rust and oil in groove should be completely removed to prevent cracks and blowholes.
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