Another option is to use E70XX/ER70S-6/F7A2-EM12K consumables, with additional technical requirement of specified minimum all-weld metal UTS and YS matching the Fe540 minimums. Most 70-class weld metals will actually give 540MPa UTS in actual batches.
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Bathula Raghuram (Mumbai - PIPING)
Sent: 27 November 2008 09:31
To: materials-welding@googlegroups.com
Subject: [MW:1359] RE: 1358] Re: Selection of welding consumables for E 410 grade steel of IS: 2062:2006
Is Fe540 modified version of Fe410? (any change in IS2062-2006, I have not seen this code),
since the UTS is 540Mpa your selection of 80XX is suitable, however properties for G classified consumables shall be verified from the consumable datasheet, as AWS does not guarantee chem. and impact properties for this classification (G).
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Ramprasad Chari
Sent: Thursday, November 27, 2008 9:26 AM
To: materials-welding@googlegroups.com
Subject: [MW:1358] Re: Selection of welding consumables for E 410 grade steel of IS: 2062:2006
You should opt for E7018 Electrode for SMAW process and ER70S wire for GMAW process.You should also check what is the actual Carbon Equivalent from the material TC by IIW formula C+Mn/6+(Cr+Mo+V)/5+(Cu+Ni)/15 or else by short formula C+Mn/6.It is preferable if it is between 0.41 to 0.43 and does not cross 0.45.Fully killed steel is preferable.
Regards
Aarpee
On 11/26/08, Polaris <polaris@cal2.vsnl.net.in> wrote:
Date: November 26, 2008
Dear friends,
Re: fabrication of I- Girder & Box Girder made of steel of Grade Designation E 410 (Fe 540) of IS 2062: 2006, having plate thickness range 10 m.m. to 36 m.m.
I shall be highly obliged if you kindly help me in selection of welding consumables for the above Steel grade:-
The Chemical Composition of steel:
| Grade Designation | C | Mn | S | P | Si | Carbon Equivalent (CE),Max | Method of deoxidationn |
| E 410 (Fe 540) | 0.20 | 1.60 | 0.045 | 0.045 | 0.45 | 0.44 | Semi-killed or killed |
(Microalloying elements like Nb, V ,Ti and B shall be added singly or in combination. Total microalloying element shall not be more than 0.25)
Mechanical Properties of steel:
| Grade Designation | Tensile Strength R m Min MPa | Yield Stress, R eH Min MPa | Percentage Elongation, A at Gauge Length, L0 5.65 √ So Min | Internal Diameter Min | Charpy V- Notch Impact Energy Min J | ||||
| | < 20 | 20-40 | 40 > | ≤ 25 | >25 | Room Temp. | - 20 | ||
| E 410 (Fe 540) | 540 | 410 | 390 | 380 | 20 | 2t | 3t | 50 | 25 |
For the above welding I have provisionally selected following welding consumables for various welding processes:-
Electrode for SMAW: - E 8018 G of AWS A5.5
Solid wire for GMAW (with Co2 Shielding): - ER 80 S-G of AWS A 5.28
Flux-wire combination for SAW: - F8A2 - EA2-A2 of AWS A5.23 alternatively F 7A4 - EH14 of AWS 5.17
I shall be obliged if you kindly send me your suggestions/ comments on the above selection of electrode, wire & SAW Flux and also let me know some reputed compatible product/brand name of the same.
With regards,
Yours Sincerely,
Soumitra Kumar De
Polaris Engineers ( I ) Pvt. Ltd.
48/19,
Tel: (033) 2424-5386; Fax: (033) 2424-4571; Cell: +91 94330-15347
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