Difference between the electrode E8018 B-8 & E8015 B-8

[Biplab Pal]

Dear Experts,

Can any body differentiate between the electrodes E8018 B-8 & E8015 B-8, and the difference of applicable areas.

--

Thanks & Regards
Biplab Pal
Welding Inspector

E-mail:   bipla...@gmail.com
 
Information in this email and any attachments is confidential and intended solely for the use of the individual(s) to whom it is addressed or otherwise directed. Please note that any views or opinions presented in this email are solely those of the author and do not necessarily represent those of the Company. Finally, the recipient should check this email and any attachments for the presence of viruses. Myself accepts no liability for any damage caused by any virus transmitted by this email.
 

[Nandesh Kumar]

Attached may be useful to you. ವಂದನೆಗಳೊಂದಿಗೆ / Best regards, Nandesh Kumar A Abu Dhabi, UAE P.S. : Please don't print this e-mail unless you really need to. --- On Sat, 5/1/13, Biplab Pal <bipla...@googlemail.com> wrote:

-- To post to this group, send email to material...@googlegroups.com To unsubscribe from this group, send email to materials-weld...@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm   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.

[c sridhar]

Mr. Pal.

E 8018- B8 / E 8015 –B8 / E 8016 – B8 Low  Alloy Steel Electrodes.

All above electrodes ( formally 505 family)  have typical chemistry  of

9 Cr & 1 Mo.  And well suitable to weld ASTM grades: A182-F9, A336-F9,

A199-T9, A200-T9, A213-T9, A335-P9, A369-FP9, A426-CP9, A217-C12, and A387- Gr9. Idea for high pressure hydrogen service.

 

Simply put the main difference between above categories are:

 

8015-B8 = Low-hydrogen sodium coating  and used with DCEP

8016-B8 = Low-hydrogen potassium coating used with DCEP or AC

8018-B8 = Low-hydrogen potassium, iron powder coating used with DCEP or AC

 

Procedures may vary with change in position, base metals, filler metals, equipment and other changes. Preheat and post-heat recommended for all.

 

SPECIFICATIONS:

 

ANSI/AWS A5.5 E8015-B8 , E8016-B8 , 8018-B8

ASME SFA A5.5 E8015-B8 , E8016-B8 , 8018-B8

(Formerly AWS A 5.4, Class E505-15 , E505-16 , N/A FOR -18)

 

Sridhar.

---

From: Biplab Pal <bipla...@googlemail.com>
To: materials-welding <material...@googlegroups.com>; JALADHAR JENA <jdjen...@yahoo.co.in>; Pinaki Boxi <boxi....@gmail.com>; chandan.majumdar <chandan....@sgs.com>
Sent: Saturday, 5 January 2013 11:20 AM

Subject: [MW:16440] Difference between the electrode E8018 B-8 & E8015 B-8

[Ashish Pathrabe]

Dear Shridhar Sir,

 

Why tensile Strenth of  Low alloy Steel /LH-7018 Electrodes is higher & more than SS Electrodes 309L ???

 

Whereasa , SS 309L& 316L are more elongations & ductility than LH-7018 ? Why?

 

What should be my 1st choice i.e E309Lor E7018 while selecting electrodes for joining Single V groove /Bevel Groove

a) A216 GrA WCB Plate to A335 Cf3m Plate (not for qualification purpose , Only when we are forced to use i.e. Non-availaibilty of Consumalbes in surronding areas & in Company).

 

Could you Pls , explain in terms of Phsical metallurgy & Microstruture,

 

With Regards,

Ashish P

[mathafiza]

Dear expert,

can we use welding electrodes E8016-B2 instead of E8016-B1?

[munee...@gmail.com]

Dear expert,

can we use welding electrodes E8016-B2 instead of E8016-B1?

Answer: change in classification is falling under supplementary essential variable and your case can be used as per QW-404.12, which does not clash with a to f. 

Can any body differentiate between the electrodes E8018 B-8 & E8015 B-8, and the difference of applicable areas.

Answer: 

A5.5                      A5.5M                    Type of Covering                                          Welding Positionsfor Classification(B)                Type of Current(C)

E8015-X              E5515-X            Low hydrogen sodium                                           F, V, OH, H                                                                 dcep

E8018-X              E5518-X          Low hydrogen potassium, iron powder(F)               F, V, OH, H                                                               ac or dcep

Regards,

M.Muneeb.

---

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-weld...@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

[sandeep kumar]

E8018-B8 and E8015-B8 both are basic low alloy steel electrode having same chemical composition of undiluted weld metal & mechanical properties and being used for the welding of 7 to 9 Cr-Mo type steel. You can also use it to weld 5Cr-1/2Mo to 7 to 9 Cr-Mo dissimilar weld joint.

The min difference is in the coating & electrical characteristics. E8015-B8 coating is having sodium silicate binding and hence can be used only for DCEP polarity.

While E8018-B8 having potassium silicate binding in the coating which enable to be used on DCEP and AC polarity, with added iron powder they enable better conductivity for current flow via the electrode coating & hence higher weld deposition.

 
E8018-B8 i having better arc striking & stabling quality than the E8015-B8 due to coating characteristics. E8015-B8 is having improved characteristics for the pipe welding compare to the other one involved in this discussion.

Thanks & regards

Sandeep Kumar

[Kannayeram Gnanapandithan]

8018 will have more impurities compare to 8015

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE,  CSWIP 3.1,

ASNT-Level II in PT,MT,RT & UT.

International Welding Engineer. 

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

--

[sandeep kumar]

Can you please elaborate what meant by more impurities? as all the elements added into the coating are deliberately added to achieve the required characteristics. 

Thanks & regards

Sandeep Kumar

[munee...@gmail.com]

As for as Part C, both are same except below mentioned changes in trailing mails.

Regards,

Muneeb.M

---

 

From: sandeep kumar

Date: 2018-10-22 12:02

To: Materials & Welding

Subject: Re: [MW:28475] Re: Difference between the electrode E8018 B-8 & E8015 B-8

Can you please elaborate what meant by more impurities? as all the elements added into the coating are deliberately added to achieve the required characteristics. 

Thanks & regards

Sandeep Kumar

On Monday, October 22, 2018 at 11:22:26 AM UTC+3, kannayeram gnanapandithan wrote:

8018 will have more impurities compare to 8015

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE,  CSWIP 3.1,

ASNT-Level II in PT,MT,RT & UT.

International Welding Engineer. 

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

On Mon, Oct 22, 2018 at 11:57 AM sandeep kumar <sandeep...@gmail.com> wrote:

E8018-B8 and E8015-B8 both are basic low alloy steel electrode having same chemical composition of undiluted weld metal & mechanical properties and being used for the welding of 7 to 9 Cr-Mo type steel. You can also use it to weld 5Cr-1/2Mo to 7 to 9 Cr-Mo dissimilar weld joint.

The min difference is in the coating & electrical characteristics. E8015-B8 coating is having sodium silicate binding and hence can be used only for DCEP polarity.

While E8018-B8 having potassium silicate binding in the coating which enable to be used on DCEP and AC polarity, with added iron powder they enable better conductivity for current flow via the electrode coating & hence higher weld deposition.

 
E8018-B8 i having better arc striking & stabling quality than the E8015-B8 due to coating characteristics. E8015-B8 is having improved characteristics for the pipe welding compare to the other one involved in this discussion.

Thanks & regards

Sandeep Kumar

[munee...@gmail.com]

without leaving room for confusion and as mentioned earlier trailing mail CVN is not applicable in your case, go ahead without qualifications.

Regards,

Muneeb.M

 

From: sandeep kumar

Date: 2018-10-22 10:29

To: Materials & Welding

Subject: [MW:28470] Re: Welding Electrodes

E8016-B2 is having increased Cr. compare to E8016-B1.

Please elobrate more, what is the reason for change & any code compliance applicable.

According to ASME section IX,  QW 404.12 its a supplementary essential variable and require re-qualification if you have CVN requirements.

 

Thanks & regards

Sandeep Kumar

From: munee...@gmail.com

Date: 2018-10-18 16:14

To: materials-welding