I don not know where this is coming from, but here in our shop we have been using ER70s-2 in spool form for GMAW welding.
On Wed, Jan 16, 2013 at 7:50 AM, kannayeram gnanapandithan <kgpandithan@gmail.com> wrote:
As per code, Minimum tensile value is 70000psi. It is not as stated in
the trailing mail. I do not think that ER70S2 is available in spool
and hope that manufacturer of welding consumable who are in this forum
may give their comments pl
Pandithan
Welding consultant
On 1/12/13, nithindsilva4u@gmail.com <nithindsilva4u@gmail.com> wrote:
> Hi,
>
> ER70S-6 has a higher mangnaese and silicon content giving this rod better
> tensile strength and smoother running characteristics then ER70S-2. Tensile
> strength is up to 88,000 psi. ER70S-2 is a triple deoxidized mild steel rod
> which will give quality welds on most grades of steel. Tensile strength if
> 77,000 psi. Both are available in rod (GTAW) as well as spool form (GMAW).
> With respect to ASME Section IX, when using in place ER 70S-2, b sure u r
> checking the A No. of ER 70S-6, as sometimes the chemical composition
> varies. if its matching then you can use.
> --
> regards,
> Dsilva
>
> Sent from my iPhone
>
> On Jan 11, 2013, at 9:17, kannayeram gnanapandithan <kgpandithan@gmail.com>
> wrote:
>
>> Can be used provided if it is available in rod for TIG process.
>>
>> Generally ER70S2 comes in rod form for TIG welding not in spool form for
>> GMAW process because in GMAW process, Titanium gets oxidided in arc itself
>> and purpose of Ti adding is lost, so it is not at all used in GMAW
>> process.
>>
>> ER70S6 comes generally in spool forms for GMAW process and if it comes in
>> rod, it can be used in TIG process
>>
>> Pandithan
>> Welding Consultant
>>
>> On Thu, Jan 10, 2013 at 7:48 PM, c sridhar <sridhar305@yahoo.com> wrote:
>>> Mr. Chakraborthy,
>>>
>>> You have not given the process details. Is it MIG or TIG process.
>>>
>>> In general:
>>>
>>> For TIG process, we use ER 70S-2 for CS welding. The shielding gas used
>>> will be Argon. Radio graphic
>>> quality is assured due to addition of Ti, Zn & Al which removes Oxygen
>>> by forming faster oxides with it
>>> along with Mn.& C. ER 70S-6 is available in spool form ( 15 kg or so)
>>> and not used for TIG process as it
>>> can not provide X-ray quality welds
>>>
>>> For MIG process, ER 70S-6 is generally used with Carbon-DI-oxide as
>>> shielding gas. ER 70S-6 has
>>> excessive Mn & Si (1.85 & 1.15 % respectively) compared to 1,4 & 0.7 %
>>> in ER 70S-2 filler wire,
>>> Additional Mn, & Si will remove oxides form CO2 gas to give good weld
>>> quality, but consistency to
>>> provide x-ray quality is a question mark. ER 70S-2 could also be used
>>> but, only with Argon gas.
>>>
>>> Sridhar.om: Ranendra Chakraborty <ranendrac6@gmail.com>
>>> To: materials-welding@googlegroups.com
>>> Sent: Thursday, 10 January 2013 12:13 PM
>>> Subject: [MW:16480] Using of ER70S-6 in place of ER70S-2
>>>
>>> Dear Expert,
>>> Please guide whether ER70S-6 can be used in place of ER70S-2. Please give
>>> code reference.
>>>
>>> Regards,
>>> Ranendra
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>
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>
> The views expressed/exchnaged in this group are members personel views and
> meant for educational purposes only, Users must take their own decisions
> w.r.t. applicable code/standard/contract documents.
>
>
>
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