the different both of them in the chemical composition as explanation below
ER70S-2 This classification covers filler metal electrodes containing small
amounts of titanium, zirconium, and aluminum in addition to the normal
deoxidizing elements manganese and silicon. These wires are commonly
referred to as triple deoxidized wires. They produce sound welds in all
types of carbon or mild steels and are especially suited for welding
carbon steels that are rusty or have mill scale on the surface. The
ERXXS-2 electrodes work well when encountering porosity and high
sulfur contents in base metals. Weld integrity varies with the amount of
oxides on the surface of the steel. They work well in the short-circuiting
mode for out-of-position welding. An application for the ER80S-D2 is on
chrome-moly steels, such as 4130, when preheat and postheat treatment
is not feasible. Although most application of the ER80S-D2 wire is with
GTAW, it is also applicable for the GMAW process.
ER70S-G This classification may be applied to solid electrodes that do
not fall into any of the preceding classes. It has no specific chemical
composition or shielding gas requirements but must meet all other
requirements of the AWS A5.18 specification.
Thanks
Zulfan
The Lincoln Electric Co
On Fri, May 18, 2012 at 4:11 PM, LALIT VADADORIYA <lalit.vadadoriya@gmail.com> wrote:
Dear sir,what is difference between ER 70 S2 and ER 70 S-G.
--Regards
Lalit Vadadoriya
Sr.Engineer (Inspection)
Engineers India Limited
Dahej Petrochemical Complex,Dahej (Gujarat)
--
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