DIFFERENCE BETWEEN ER70S-2 &ER70S-6

[Vinu Raveendran]

Dear Members,

I would like to know difference between ER70S2 &ER70S6?

What does "2" and "6" mean in them and which welding process we use them?

Thankyou! 

--
VINU RAVEENDRAN

[Nandesh Kumar]

ER 70S-2 is a deoxidized solid bare wire, used in GMAW of unalloyed steels. ER70S-3 is copper coated solid bare Si Mn wire, used for GTAW of unalloyed steels applications. Both of them can be used for general construction works like vessels, ship building etc. The last digit signifies the chemical composition of the weld metal (Suffix 'GS' is intended for single pass welds only). ವಂದನೆಗಳೊಂದಿಗೆ / Best regards, Nandesh Kumar A Abu Dhabi, UAE P.S. : Please don't print this e-mail unless you really need to. --- On Mon, 26/11/12, Vinu Raveendran <vinur...@gmail.com> wrote:

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[Dinesh Somwanshi]

dear sir,

generally, e 70s-2 we are generally used for gtaw rod
,while er 70s-6 we are using in gmaw

thanks & regards

dinesh

--

[HAREESH K V]

Dear all,

E means electrode.
R means it comes on a roll. Hence no R on some tig rod pkgs.
70 is for tensile strength kpsi
S means solid bare wire. T would be tubular for Flux Core.
X meaning whatever number it is stands for chemical composition. 2 is heavily deoxidized and is good for rusted steel, 6 is highest in Mn & Si and has better wetting action i.e. more fluid puddle. 5 is the one w/ Si, Mn & Al. 7 is all purpose

Regards,

Hareesh

[Sujay A.G.]

Both are useing for gtaw. 70s6 contains more si.which is  good for welding in highly contaminated area

[sevak hiren]

ER70S-2 differentiate with ER70S-6 in following manner.

1) ER70S-2 is composed with more added deoxidants than ER70S-6.

2) ER70S-2 is mainly used with 100% argon gas shielding in GTAW process, where as ER70S-6 is used with mixtures of Gas in GMAW process.

Regards

Hiren Sevak

--

[kannayeram gnanapandithan]

ER 70S2-------- Triple Deoxidiser ( Ti, Al, Zr). This is mostly used in GTAW process and not in GMAW process due to loss of Titanium in arc column.

ER70S6------- Highly Deoxidiser With High Mn & Si. This is mostly used in GMAW process.

Pandithan

welding consultant

On Mon, Nov 26, 2012 at 1:49 PM, Vinu Raveendran <vinur...@gmail.com> wrote:

--

[c sridhar]

    Mr. Vinu,

    ER 70S-2  has  C - 0.07 max, Mn - 0.9 to 1.40, Si - 0.4 to 0.70. It has extra triple De-Oxidizers like Ti - 0.15 max, Zr - 0.12 max, Al - 0,15 max
    Due to addition of De- Oxidizers, S -2 gives excellent x- ray quality welds, 
    Used  with  Argon gas for GTAW process on MS. Available as cut lengths & coil form.

    ER 70S-6  has  C - 0.15 max, Mn - 1.4 to 1.90, Si - 0.8 to 1.15., but no De-Oxidizers like in ER 70S-2.  
    Extra Mn & Si will help to remove oxygen when used with CO2 gas.  May / may not   provide  x- ray quality welds, 
    Used  with  CO2 gas for GMAW (MAG/CO2) process on MS. Available  mostly  as coil form only ( 15 to  250 kg

    UTS  values for both are same more or less.

    Sridhar.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

On Mon, Nov 26, 2012 at 12:19 PM, Vinu Raveendran <vinur...@gmail.com> wrote:

Dear Members,

I would like to know difference between ER70S2 &ER70S6?

What does "2" and "6" menot providean in them and which welding process we use them?

Thankyou! 

--
VINU RAVEENDRAN

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[kannayeram gnanapandithan]

ER70S6 also good Xray quality weld

[Vikram Yadav]

Dear Sir,

 

I am using ER70S-6 for GMAW. But found golden spots after welding. Are these golden spots Silicon Oxide or somthing else.

These golden spots causes problem during paint as its a not metal it is not covered in CED bath. I always found these spots more brighter after the paint baking.I want to eleminate this probem.

 

So can i switch to any other wire with less silicon composition or there is any better alternate available.

 

Please Suggest.

[c sridhar]

 In the first part - ER 70S-6 & ER 70S-2:     

S-6: contains very high Manganese & Silica content which will act as de-oxidizers and could    

       be used along with CO₂ as shielding gas. Radiographic quality of weld is not mandatory.

       Recommended for GMAW (MIG & MAG) process.

 

S-2: contains limited amount of Mn & Si, but has additional elements like Zn – Al – Ti, which will

       act as deoxidizers and could be used along with Argon ( or) with Ar (+) O₂ as shielding gas.

      100 % radiographic quality of weld is obtainable. Recommended for GTAW (TIG) process.

 

In the second part i.e., with ER 70S-6:

The said golden spots are nothing but non-metallic slag spots, caused by the reaction of excessive Manganese (Mn)

used as a de-oxidizer in S-6 wire and reaction of Mn (+) Oxygen, which is transferred through CO₂ shielding gas.

 

It will not stick to weld surface and could be removed easily by hand / power brushing and it is a general post weld

practice if surface painting  to be done. But, spots can be controlled through proper selection of Voltage / current

ratios, by using Ar (+) CO₂ mixture gas and good bead ripple finish.

 

If required you can use ER 70S-2, but it is 3 times expensive to S-6 wire. Alternatively, S-3 also could be used with

Argon gas.

 

Sridhar.

 -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
ram Yadav <yadav.v...@gmail.com>
To: material...@googlegroups.com
Sent: Saturday, 28 December 2013 9:12 AM
Subject: [MW:19730] Re: DIFFERENCE BETWEEN ER70S-2 &ER70S-6

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[Maulik Thakkar]

ER70S-2 is compatible GTAW wire to be use with Ar gas only. Where as -6 is compatible GMAW wire generally use with CO2 GAS. Si n Mn has to add as deoxifizers to eliminate effect of O2 from weld pool.

Regards,
Maulik
Welding engg. And metallurgy
Larsen n toubro
Surat

--

[Malusare Vijay]

Dear Maulik Thakkar

IF WE USE IN ER70S-6 ARGON+CO2 (85%+15%). THEN WHAT HAPPEN..........

Regards

VIJAY MALUSARE

[kannayeram gnanapandithan]

nothing happen, but check ur mechanical properties

THANKS & BEST REGARDS

KG.PANDITHAN, AWS-CWI, CSWIP 3.1

CONSULTANT-WELDING & QUALITY

[Malusare Vijay]

Dear Sir,

Thanks for your reply but when I check Radiography films and Observed lots of cluster porosity  and side L/F

 With Best Regards, 

Vijay.A.Malusare
Engineer

[kannayeram gnanapandithan]

we have used both 90%Ar + 10% Co2 and 95%+5%, we found that spatter level has come down very considerably( Sticking to job is almost nil )

THANKS & BEST REGARDS

KG.PANDITHAN, AWS-CWI, CSWIP 3.1

CONSULTANT-WELDING & QUALITY

[alireza]

Dear Sir,

Both of them are using in GTAW and GMAW

The mechanical properties of 6 is better than 2 and also you can use active gas and depend on using gas 100% CO2 till 75%Ar+25 %CO2 you can see reducing the porosity and spatter.

For more information about that you can check in ASME SEC II

 

Best Regards,

A.SAMIMI

[prem nautiyal]

Hi

 

If you use 100% Co2 you will get a strong arc force and better penetration as compared to 80%Ar+20%CO2 mixture.

Also with 100% Co2 you have to use a heater and chances of porosity will be negligible if your heater is working properly. Cost of 100% CO2 is also lesser as compared to mixture.

 

You will get lesser spatter with mixture due to lesser arc force.

 

Please refer your welding consumable manufacturer product technical data sheet prior to welding !!!

 

Regards

 

Prem Nautiyal

cell: 9769316004

 

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[venkateswaran k]

Hi

can we use 99.995% Ar -GTAW process in Piping with ER70S2?

Regards,

On Thu, 02 Jan 2014 22:02:24 +0530 wrote
> HiIf you use 100% Co2 you will get a strong arc force and better penetration as compared to 80%Ar+20%CO2 mixture. Also with 100% Co2 you have to use a heater and chances of porosity willbe negligibleif your heater is working properly. Cost of 100% CO2 is also lesser as compared to mixture.You will get lesser spatter with mixture due to lesser arc force.Please refer your welding consumable manufacturer product technical data sheet prior to welding !!!RegardsPrem
Nautiyalcell: 9769316004

On Thursday, January 2, 2014 8:55 PM, alireza wrote:

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Dear Sir,

Both of them are using in GTAW and GMAW

The mechanical properties of 6 is better than 2 and also you can
use active gas and depend on using gas 100% CO2 till 75%Ar+25 %CO2 you can see
reducing the porosity and spatter.

For more information about that you can check in ASME SEC II



Best Regards,

A.SAMIMI





From:
material...@googlegroups.com [mailto:material...@googlegroups.com] On
Behalf Of kannayeram gnanapandithan
Sent: Thursday, January 2, 2014 2:00 PM
To: materials-welding
Subject: Re: [MW:19744] DIFFERENCE BETWEEN ER70S-2 &ER70S-6







we have used both 90%Ar + 10% Co2 and 95%+5%, we found that
spatter level has come down very considerably( Sticking to job is almost nil )












THANKS & BEST REGARDS



KG.PANDITHAN, AWS-CWI, CSWIP 3.1





CONSULTANT-WELDING & QUALITY











On Thu, Jan 2, 2014 at 10:58 AM, Malusare Vijay

wrote:



Dear Sir,









Thanks for your reply but when I check Radiography films and
Observed lots of cluster porosity and side L/F











With Best Regards,



Vijay.A.Malusare
Engineer







On Wed, Jan 1, 2014 at 4:59 PM, kannayeram gnanapandithan

wrote:



nothing happen, but check ur mechanical properties












THANKS & BEST REGARDS



KG.PANDITHAN, AWS-CWI, CSWIP 3.1





CONSULTANT-WELDING & QUALITY











On Wed, Jan 1, 2014 at 3:27 PM, Malusare Vijay

wrote:



Dear Maulik Thakkar









IF WE USE IN ER70S-6 ARGON+CO2 (85%+15%). THEN WHAT
HAPPEN..........











Regards











VIJAY MALUSARE













On Tue, Dec 31, 2013 at 10:17 PM, Maulik Thakkar

wrote:

ER70S-2 is compatible GTAW wire to be use with Ar gas only. Where as -6 is
compatible GMAW wire generally use with CO2 GAS. Si n Mn has to add as
deoxifizers to eliminate effect of O2 from weld pool.

Regards,
Maulik
Welding engg. And metallurgy
Larsen n toubro
Surat



On Nov 26, 2012 3:37 PM, "Vinu Raveendran"

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"venkateswaran k" ---04/01/2014 16:00:26---Hi can we use 99.995% Ar -GTAW process in Piping with ER70S2?

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