Product Description

H*8A is a kind of carbon constructional steel copper-plated submerged arc welding wire. Different welding fluxes can be selected for it to weld the workpiece, 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.
Purpose: It is widely applied to welding of carbon steel (for example, Q**5, Q**5, etc.) and some low alloy steel (for example *9Mn2, *6MnCu, *6Mn and *5MnTi) in industries of boilers, ships, pressure containers, pipes, etc. The used fused fluxes: HJ**1, HJ**3, HJ**4, etc. The used sintered fluxes: SJ**1, SJ**2, SJ**1, SJ**2, SJ**3, SJ**2, etc.
Chemical Compositions of Welding Wire ：%
 

	C	Mn	Si	P	S	Cr	Ni	Cu
Example Value	0.*7	0.*0	0.**1	0.**4	0.**1	0.**6	0.**8	0.*5
Range	≤0.*0	0.*0~0.*0	≤0.*3	≤0.**0	≤0.**0	≤0.*0	≤0.*0	≤0.*0

Note: When the surface of welding wires is copper-plated, the copper content should not be more than 0.*5%
Fused Metal Mechanical Property:（HJ**1+Q**5）

	Tensile Strength Rm（MPa）	Yield Strength Rel(MPa)	Elongation Rate A（%）	Ballistic Work Room Temperature **0℃ AKV(J)
Example Value	**5	**2	*9	*0
Range	**5~**0	≥**0	≥*2	≥*7

Welding Process：
①Weld carbon steel：

Welding Wire Specificationmm	Welding CurrentA	Electric Arc VoltageV	Current Type	Welding Speed m/h		inter-pass temperature℃	Extended Length of Welding Wiremm
1.6	**0	*0±2	DC or AC	*8	±1.5	**5~**5	*3~*9
2.0	**0	*0±2	DC or AC	*0	±1.5	**5~**5	*3~*9
2.5	**0	*0±2	DC or AC	*1	±1.5	**5~**5	*2~*5
3.2	**0	*0±2	DC or AC	*3	±1.5	**5~**5	*2~*5
4.0	**0	*0±2	DC or AC	*5	±1.5	**5~**5	*5~*8
5.0	**0	*0±2	DC or AC	*6	±1.5	**5~**5	*5~*8
6.0	**0	*0±2	DC or AC	*7	±1.5	**5~**5	*5~*8

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 Specificationmm	Welding Current A	Electric Arc Voltage V	Current Type	Welding Speed m/h		Extended Length of Welding Wiremm	inter-pass temperature℃
1.6	**0~**0	*6~*9	DC or AC	*8	±1.5	*3~*9	**0±*5
2.0	**0~**0	*6~*9	DC or AC	*8	±1.5	*3~*9	**0±*5
2.5	**0~**0	*7~*0	DC or AC	*0	±1.5	*9~*2	**0±*5
3.0	**0~**0	*7~*0	DC or AC	*3	±1.5	*5~*8	**0±*5
3.2	**5~**5	*7~*0	DC or AC	*3	±1.5	*5~*8	**0±*5
4.0	**5~**5	*7~*0	DC or AC	*5	±1.5	*5~*8	**0±*5
5.0	**0~**0	*7~*0	DC or AC	*5	±1.5	*5~*8	**0±*5
6.0	**5~**5	*8~*1	DC or AC	*9	±1.5	*2~*4	**0±*5
6.4	**0~**0	*8~*2	DC or AC	*1	±1.5	*8~*0	**0±*5

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.
Precautions:
The diameter of welding wires should comply with the size of the electrode nozzle, if the diameter of the electrode nozzle is too big, poor electric conduction, bad formation of weld seams, even arc breaking will be caused;
For those welding wires which are exposed to air and are not used for a long time, their surfaces may have rust, oil, etc. which affect the use of welding wires; the right way is that the surfaces of the welding wires should be completely cleaned before they are used; and for normal welding, those impurities such as oil, rust and water in a welding area should be completely removed;
When the welding wires are used, the inclinations of the welding wire and the workpiece both affect the shape and the depth of fusion of the weld pass, if the welding wire bends forward (it is the uphill welding), the depth of fusion is big, and if the welding wire bends backward (it is the downhill welding), the depth of fusion is small and the width of fusion increases;
The welding flux should be baked and melted at the temperature of between **0 and **0℃ for 2 hours before use;
The welding line energy will directly affect the weld seam performance, so that please pay special attention to it;
For different welding fluxes are used by users and welding pieces and process also differ, it is recommended that before the welding wires and the welding fluxes are used, the selected welding fluxes and welding wires need welding process evaluation so as to better meet users’ demands.
Moving and Storage of Welding Wires
When welding wires are moved, the welding wires should be handled with care to avoid breaking, bumping and falling, which may cause deformation or loosening of welding wires to affect the wire feeding performance;
Welding wires should be kept away from water and fire and are not high-temperature resistant, so that please pay more attention when they are stored;
When the welding wires are stored in a warehouse, the welding wires should be kept more than *0cm away from the wall and orderly placed according to specifications and models in order to prevent misuse, and the use of welding wires should observe the principle of “first-in first-out”.

Country:	China
Model No:	H08A
FOB Price:	( Negotiable ) (Negotiable) Get Latest Price
Place of Origin:	-
Price for Minimum Order:	-
Minimum Order Quantity:	20 Ton
Packaging Detail:	Export Standard
Delivery Time:	25 Days after deposit
Supplying Ability:	10 Ton per Week
Payment Type:	L/C, T/T
Product Group :	Welding Wire