CHE40

CHE40 is the most popular mild steel welding rod. It is able to provide excellent welding performance and satisfactory weld metal can be obtained in all position welding. It is widely used in ordinary tensile strength mild steel structures especially suitable for intermittent welding to sheet steels and small work pieces as well as cosmetic welding with smooth and shiny appearance, e.g. top-hull of ships.

More Information

Type of Covering: High titania, potassium

Welding Position: F, H, HF, OH, V

Type of Current: AC, DCEP or DCEN

 

Chemical Composition of Deposited Metal (%)

 

-
Standard
Typical
C
≤0.20
0.070
MN
≤1.20
0.41
Si
≤1.00
0.26
S
≤0.035
0.021
P
≤0.040
0.023
Ni
≤0.30
0.018
Cr
≤0.20
0.027
Mo
≤0.30
0.002
V
≤0.08
0.001

 

Mechanical Properties of Deposited Metal (AW)

 

-
Standard
Typical
Yield Strength
ReH (MPa)
≥306
395
Tensile Strength
Rm (MPa)
400-560
480
Elongation
A4 (%)
≥22
29
Impact Value (J)
20℃
-
110
0℃
≥47
80

 

The standard of mechanical properties conforms to shipping institutions and the certifcate of inspection would follow it unless the purchaser has special requirement.

X-ray radiographic inspection: Grade Ⅱ

 

Sizes, Pieces & Recommended Current (AC or DC)

 

Size (mm)
Pieces (5kg)
Current (A)
F, H
V, OH
2.5 x 300
≈303
60-90
50-80
2.5 x 350
≈258
60-90
50-80
 3.2 x 350
≈157
80-130
80-110
4.0 x 400
≈90
150-190
130-170
4.0 x 450
≈80
150-190
130-170
5.0 x 400
≈59
180-250
-
5.0 x 450
≈52
180-250
-

 

Approvals

 

Institute
Grade
CCS
2
LR
2m
ABS
2
GL
2
DNV
2
NK
2
BKI
2
KR
KMW2
CWB
E4313

 

Notice: Normally the rod do not need to re-dry in case it is affected with damp seriously it should be re-baked at 150℃ for 30-60minutes before use.