Introduction:H08A is a kind of carbon constructional steel copper-plated submerged arc welding wire. Different welding fluxes can be selected for it to weld the work piece, so that the performance of welded joints is different; and in general, for carbon steel having low obdurability on welded joints, fused fluxes are used for welding, and for some low alloy steel, sintered fluxes are used for welding.
Application: It is widely applied to welding of carbon steel (for example, Q195, Q215, etc.) and some low alloy steel (for example 09Mn2, 16MnCu, 16Mn and 15MnTi) in industries of boilers, ships, pressure containers, pipes, etc. The used fused fluxes: HJ431, HJ433, HJ434, etc. The used sintered fluxes: SJ301, SJ302, SJ501, SJ502, SJ503, SJ522, etc.
Chemical Compositions of Welding Wire ：%
|
C
|
Mn
|
Si
|
P
|
S
|
Cr
|
Ni
|
Cu
|
|
|
Example Value
|
0.07
|
0.40
|
0.021
|
0.014
|
0.011
|
0.016
|
0.008
|
0.15
|
|
Range
|
≤0.10
|
0.30~0.60
|
≤0.03
|
≤0.030
|
≤0.030
|
≤0.20
|
≤0.30
|
≤0.20
|
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
