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CHE58-1
High Toughness Electrode for Welding High Tensile
Steel |
AWS
A5.1 E7018-1/E7018
BS EN ISO 2560-B-E 49 18 -1 A
GB/T 5117 E5018-1/E5018
CSA W48-01 E4918-1H8
JIS Z3212 D5016 |
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Description:
CHE58-1
is an outstanding
quality all position welding electrode covered with extra low hydrogen
potassium type coating for high tensile strength mild steels and low alloy
steels. Its nominal welding efficiency is about 110% due to iron powder is
contained. The weld metal shows an excellent low temperature toughness and
high crack-resistance. It is widely used in important projects of ships,
boilers, high pressure vessels, bridges, skyscrapers, offshore drilling
platforms, nuclear power plants and so on. The groove of base metal should
be cleared impurities away and the electrode must be baked at a temperature
to 400℃ then be held 1-2 hours before welding, 2.5mm or less one should be
done by 350℃ then be held 1 hour.
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Chemical
Composition of Deposited Metal(%)
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|
C |
Mn* |
Si |
S |
P |
Cr* |
Ni* |
Mo* |
V* |
|
Standard |
≤0.15 |
≤1.60 |
≤0.75 |
≤0.035 |
≤0.040 |
≤0.20 |
≤0.30 |
≤0.30 |
≤0.08 |
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Typical |
0.068 |
1.36 |
0.51 |
0.010 |
0.016 |
0.047 |
0.022 |
0.010 |
0.014 |
The total
amount of elements with * one should be≤1.75%
Mechanical Properties of Deposited Metal
|
|
Yield Point
ReH
(MPa) |
Tensile Strength
Rm (MPa) |
Elongation
A4
(%) |
Impact Value (J) |
|
-20℃ |
-29℃ |
-45℃ |
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Standard |
≥375 |
490-660 |
≥22 |
≥47 |
≥27 |
≥27 |
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Typical |
440 |
540 |
30 |
170 |
150 |
130 |
The
content of diffusion hydrogen of deposited metal＜5ml/100g(ISO
3960) and a typical one is 2.6ml/100g
Sizes, Pieces & Recommended Current Range
(AC >= 70 or DC+)
|
Size (mm) |
2.5 x 300 |
2.5 x 350 |
3.2 x 350 |
3.2 x 450 |
4.0 x 400 |
4.0 x 450 |
5.0 x 400 |
5.0 x 450 |
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Pieces (5kg) |
≈290 |
≈248 |
≈145 |
≈114 |
≈84 |
≈75 |
≈51 |
≈45 |
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Current
(A) |
F, H |
70-100 |
70-100 |
100-140 |
100-140 |
140-170 |
140-170 |
190-240 |
190-240 |
|
V, OH |
60-70 |
60-70 |
80-110 |
80-110 |
130-150 |
130-150 |
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Approvals |
CCS |
LR |
ABS |
BV |
GL |
DNV |
BKI |
KR |
CWB |
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Grade |
3YH5 |
3,3Y,H15 |
3YH5 |
3YHHH |
3YH10 |
3YH5 |
3YH10 |
3YH10 |
E4918-1H8 |
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