[MW:1357] RE: Selection of welding consumables for E 410 grade steel of IS: 2062:2006

Date: November 26, 2008

 

Dear Mr. Bathula Raghuram & 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 Bend 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, Swiss Park, Kolkata- 700 033.

Tel: (033) 2424-5386;  Fax: (033) 2424-4571; Cell: +91 94330-15347

 

 

-----Original Message-----
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Bathula Raghuram (Mumbai - PIPING)
Sent: Wednesday, November 26, 2008 8:40 AM
To: materials-welding@googlegroups.com
Subject: [MW:1355] RE: 1354] RE: Buried Fittings

 

It could be poor design, why you need flanges in a buried pipeline?

Most cost effective will be coal tar wrapping

---

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Fly Yalung
Sent: Tuesday, November 25, 2008 5:44 PM
To: materials-welding @google
Subject: [MW:1354] RE: Buried Fittings

 

Dear Gentlemen, Good day to everyone. I have one dilema regarding some fittings to be welded to a pipe and will be buried 1.5 meter below grade surface. Is this right thing to done? If correct what is the most cost effective protection that we can do to protect the buried fittings(example- Flanges). Best regards, Fly L. Yalung Material Egineer M. A. Al-Kawari Est. K.S.A.

 

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