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CHE58-1
High Toughness Electrode for Welding High Tensile
Steel |
AWS A5.1 E7018-1/E7018
CSA E4918-1H8
EN E42 5 B 32 H5
DIN E5154B (R)10
BS E5154B 110 26(H)
JIS D5016
GB E5018-1/E5018 |
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Description:
CHE58-1
is an outstand
quality all position welding electrode covered with extra low hydrogen
potassium type coating for welding high tensile steels and low alloy steels.
It’s 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 press vessels, bridges, skyscrapers, offshore drilling
platforms, nuclear power stations etc. The groove of base metal should be
cleared away impurities and the electrode must be baked at a temperature to
400℃
then be held 1-2 hours before welding, 2.5mm one should be done by 350℃
then be held 1 hour.
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Chemical
Composition of Deposited Metal(%)
|
|
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 |
|
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
A5 (%) |
Impact Value (J) |
|
-20℃ |
-29℃ |
-46℃ |
|
Standard |
≥375 |
490-660 |
≥22 |
≥47 |
≥27 |
≥27 |
|
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 |
|
Pieces (5kg) |
≈290 |
≈248 |
≈145 |
≈114 |
≈84 |
≈75 |
≈51 |
≈45 |
|
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 |
|
|
|
Approvals |
CCS |
LR |
ABS |
BV |
GL |
DNV |
BKI |
CWB |
|
Grade |
3YH5 |
3,3Y,H15 |
3YH5 |
3YHHH |
3YH10 |
3YH5 |
3YH10 |
E4918-1H8 |
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