Introduction: H08MnA is a kind of carbon constructional steel copper-plated submerged welding wire. It has excellent welding process performance, the electric arc combustion is stable, the weld seam is handsome, the slag is easily removed, and the welding methods and the process requirements such as big line energy multi-layer multi-pass, double-sided single-pass and high-speed welding are met.
Application: It is widely applied to welding of carbon steel (for example, Q195, Q215, Q235, etc.) and low-strength alloy steel (for example, 16MnCu, 16Mn, etc.) in boilers, pressure containers, bridges, ships, etc. The used welding fluxes: Fused fluxes: HJ230, HJ330, HJ433, HJ434, etc.; and the sintered fluxes: SJ101, SJ107, SJ201, SJ301, SJ302, SJ501, SJ503, etc.
Chemical Compositions of Welding Wire：%
|
C
|
Mn
|
Si
|
P
|
S
|
Cr
|
Ni
|
Cu
|
|
|
Example Value
|
0.08
|
0.91
|
0.04
|
0.018
|
0.012
|
0.02
|
0.01
|
0.15
|
|
Range
|
≤0.10
|
0.80~1.10
|
≤0.07
|
≤0.030
|
≤0.030
|
≤0.2
|
≤0.30
|
≤0.20
|
Note: When the surface of welding wires is copper-plated, the copper content should not be more than 0.35% Welding Process：
①Weld carbon steel：
|
Welding Wire Specification
mm
|
Welding Current A
|
Electric Arc Voltage V
|
Current Type
|
Welding Speed
m/h
|
Inter-Pass Temperature℃
|
Extended Length of Welding Wire
mm
|
|
|
1.6
|
350
|
30±2
|
DC or AC
|
18
|
±1.5
|
135~165
|
13~19
|
|
2.0
|
400
|
30±2
|
DC or AC
|
20
|
±1.5
|
135~165
|
13~19
|
|
2.5
|
450
|
30±2
|
DC or AC
|
21
|
±1.5
|
135~165
|
22~35
|
|
3.2
|
500
|
30±2
|
DC or AC
|
23
|
±1.5
|
135~165
|
22~35
|
|
4.0
|
550
|
30±2
|
DC or AC
|
25
|
±1.5
|
135~165
|
25~38
|
|
5.0
|
600
|
30±2
|
DC or AC
|
26
|
±1.5
|
135~165
|
25~38
|
|
6.0
|
650
|
30±2
|
DC or AC
|
27
|
±1.5
|
135~165
|
25~38
|
Note: If the welding voltage and the welding current are off the standards, the mechanical property of the fused metal and the use effect of welding wires will be affected.
②Some low alloy steel welding process:
|
Welding Wire Specification mm
|
Welding Current A
|
Electric Arc Voltage V
|
Current Type
|
Welding Speed
m/h
|
Extended Length of Welding Wire mm
|
inter-pass temperature |
|
|
1.6
|
250~350
|
26~29
|
DC or AC
|
18
|
±1.5
|
13~19
|
150±15
|
|
2.0
|
300~400
|
26~29
|
DC or AC
|
18
|
±1.5
|
13~19
|
150±15
|
|
2.5
|
350~450
|
27~30
|
DC or AC
|
20
|
±1.5
|
19~32
|
150±15
|
|
3.0
|
400~500
|
27~30
|
DC or AC
|
23
|
±1.5
|
25~38
|
150±15
|
|
3.2
|
425~525
|
27~30
|
DC or AC
|
23
|
±1.5
|
25~38
|
150±15
|
|
4.0
|
475~575
|
27~30
|
DC or AC
|
25
|
±1.5
|
25~38
|
150±15
|
|
5.0
|
550~650
|
27~30
|
DC or AC
|
25
|
±1.5
|
25~38
|
150±15
|
|
6.0
|
625~725
|
28~31
|
DC or AC
|
29
|
±1.5
|
32~44
|
150±15
|
|
6.4
|
700~800
|
28~32
|
DC or AC
|
31
|
±1.5
|
38~50
|
150±15
|
Note: If the welding voltage and the welding current are off the standards, the mechanical property of the fused metal and the use effect of welding wires will be affected.
Packing: 25kg/coil, 50kg/coil, 150kg/coil, 200kg/coil or OEM PACKING
