[TheForge] Re: Welding Rod
Mike Spencer
mspencer at tallships.ca
Thu Jun 8 13:44:26 EDT 2006
> Can someone tell me what the letters mean? I know the first tells
> tensile strength, but what do the others mean?
I don't know. But hey, that's why I saved other people's comments
from previous, similar questions. Here's what I've kept on my
computer for when I can't remember.
[ The attribution -- indication of who originally said what -- may be
[ a bit mixed up. So WYSIWYG.
- Mike
--- Begin included stuff ---
-------------------------------------------------------------
Notes on classification & numbers; storing and reconditioning
-------------------------------------------------------------
---
Date: Mon, 18 Dec 2000 12:32:12 -0600
From: Dave Brown <quahog at netnet.net>
Subject: Re: [TheForge] Welding Equipment Question
At 10:06 AM 12/18/2000 -0800, you wrote:
>Thankyou everyone, it's becoming clear now. I think I have only two
>questions left.
>
>Ralph said: "Being able to use 7018 comfortably will allow the welding of
>dissimilar metals and low medium and high carbon steels............to other
>steels for tool making. This is done with DC reverse polarity(electrode
>positive)."
>
>Does this mean that 7018 is a DC electrode and can't be used with AC?
Loren,
About a year and a half ago I had similar questions regarding the
application of different rods and the logic behind the numbering system
which tell you what the rods are suited for. Jack Yates sent the following
reply, here cut and pasted in its entirety:
Dave Brown
*************cut and paste stuff starts here *******
On 1999-05-24 theforge at qth.net said:
>Would someone please explain the built in logic of the numbering
>system for welding rods? I don't know if this is manufacturer
>specific, or industry standard.
Yup! Ask me what time it is and I'll explain the internal workings
of a watch.
What follows is the AWS industry standard. Some manufacturers
have their own numbering system, Lincoln in particular, but they
also label the containers with the AWS classification.
In the instance of E7018, and for mild steel and low alloy steel
rods:
E=Electrode
70=tensile strength in kps
1=welding position, where::
1-flat, horizontal, vertical (up), overhead.
2-flat, horizontal.
4-flat, horizontal, vertical (down), overhead.
There is no classification for rod that will weld vertical up
*and* vertical down, though McKay 6011 and most 6013 will.
8=coating, penetration and current type. Here we accept that
DCEP means DC, electrode positive (or "DC reverse") and DCEN is
electrode negative (straight polarity) and AC is of course,
alternating current.
Exxx0=cellulose, sodium; deep penetration; DCEP
Exxx1=cellulose, potassium; deep penetration; AC, DCEP
Exxx2=rutile, sodium; medium penetration; AC, DCEN
Exxx3=rutile,potassium; light penetration; AC, DCEP, DCEN
EXXX4=rutile, iron powder;medium penetration; AC, DCEP, DCEN
EXXX5=Low Hydrogen, Sodium; medium penetration; DCEP
Exxx6=Low Hydrogen, potassium; medium penetration; AC, DCEP
Exxx7=Iron powder, iron oxide; medium penetration; AC, DCEN
Exxx8=Low hydrogen, iron powder; medium penetration; AC, DCEP
Exxx9=Iron oxide, Rutrile, Potassium; medium, AC, DCEP, DCEN
We can apply this table to E6010 and learn that it is an
electrode with a tensile strength of 60 Kpsi, deep penetrating
all position (avertical up) and for use with DCEP only.
6013 turns out to be an electrode with a tensile strength of
60Kpsi, light penetration,all position (vertical up) and any
type power supply.
There are other AWS classifications for the "high-tech rods;
there are suffixes that indicate the presence of alloy
chemicals, military specs and other stuff, but generally
speaking they don't need to go in here.
I took this info from a little booklet that McKay Welding
Products puts out, they're a freebie at any McKay dealer. I
have three of them, one for mild steel electrodes, one for
stainless steel electrodes and one for hard surfacing and
build-up rods; there's a lot more info in the booklets.
Ask your welding supplies dealer..
---
From: Dave Brown <quahog at netnet.net>
6013 is AC or DC. The odd/even rule of thumb applies more to whether you
not you a rod is suitable for AC, but all rods can be run DC. See below.
ELECTRODES AND CURRENTS USED
* EXX10 DC+ (DC reverse or DCRP) electrode positive.
* EXX11 AC or DC- (DC straight or DCSP) electrode negative.
* EXX12 AC or DC-
* EXX13 AC, DC- or DC+
* EXX14 AC, DC- or DC+
* EXX15 DC+
* EXX16 AC or DC+
* EXX18 AC, DC- or DC+
* EXX20 AC ,DC- or DC+
* EXX24 AC, DC- or DC+
* EXX27 AC, DC- or DC+
* EXX28 AC or DC+
* NOTE The EXX1X and EXX2X designate rod suitable for 1=All
position, 2=Flat and overhead, 3=Flat only.
*
My favorite rod for mild steel is E7018. Some rod manufacturers make a
7018-AC which is for AC use only and works very well there.
Dave Brown
---
Subject: RE: [TheForge] welding rod question
Date: Fri, 30 Nov 2001 15:21:55 -0500
Sender: owner-theforge at qth.net
Reply-To: theforge at qth.net
My favorite "generic" lazy man's rod is any XX24, 7024 or 6024. Some of the
other "old timers" might know it as drag rod. Just drag the rod along the
surface, the slag pops right off by itself, not heated storage required,
however only good for horizontal. It's like an iron filings rod.
Ray
Cincinnati
---
Ref: http://erhs.smjuhsd.k12.ca.us/jenglish/indexpages/weldnotes/weldnotepages/smawnotes/electrodeinfo.htm
Electrodes
3 Basic types:
Fast-Fill: Iron powder electrode that has a soft arc and fast deposit rate
o E-6020
o E-6027
o E-7024
o E-7028
Fast-Freeze: Electrode that produces a snappy, deep penetrating Arc.
Application: Vertical and overhead welding
o E-6010
o E-6011
Fill-Freeze: Electrode that has moderately forceful arc and deposit
rate. The rate is between those of the fast-freeze and fast-fill
electrodes
o E-7014
o E-6012
o R-6013
o E-7016
---
http://www.trwelding.co.uk/page6.html
TRUWELD 6013 - AWS A5.1 E6013
A rutile coated, very easy to use, general purpose mild steel
electrode. For welding light and medium fabrications in all positions.
Easy to strike and restrike. Gives smooth weld beads and the slag is
easy to remove.
TRUWELD 6013M - AWS A5.1 E6013
A rutile coated electrode for light and medium mild steel
fabrications. Can be used in all positions especially vertical down.
TRUWELD 6013P - AWS A5.1 E6013
A rutile coated electrode for light and medium mild steel
fabrications. Can be used in all positions but used to best advantage
in the vertical up and overhead positions.
TRUMILD - AWS A5.1 E6013 (nearest)
A thick rutile coated electrode for use where exceptional weld
appearance is the prime consideration. For downhand welding and
horizontal-vertical fillets only.
TRUWELD 7016 - AWS A5.1 E7016
A low hydrogen electrode for use in all positions except vertical
down.
TRUWELD 7016-1 - AWS A5.1 E7016-1
A low hydrogen electrode for use in all positions except vertical
down. Similar to TRUWELD 7016 with good sub-zero toughness properties.
TRUWELD 7016-A1 - AWS A5.5 E7016-A1
A low hydrogen electrode for use in all positions except vertical
down. Similar to TRUWELD 7016 with a 0.5% Molybdenum addition,
typical applications include the welding of C-Mo steel base metals.
TRUWELD 7018-1 - AWS A5.1 E7018-1
A low hydrogen electrode with a controlled iron powder addition,
usable in all positions. Deposits have good sub-zero toughness
properties. High travel speeds.
TRUWELD 7018-A1 - AWS A5.5 E7018-A1
A low hydrogen electrode with a controlled iron powder addition,
useable in all positions except vertical down. Typical applications
include welding C-Mo steel base metals. High travel speeds.
TRUWELD 7018-G - AWS A5.5 E7018-G
A low hydrogen electrode with a controlled iron powder addition. Used
for welding steels with special high toughness requirements. 2.5 &
3.2mm diameters can be used in all positions and are particularly
advantageous when welding vertical up root runs. All sizes above 3.2mm
can be used in all positions except vertical down.
TRUWELD 7024 - AWS A5.1 E 7024
An iron powder electrode for downhand use and horizontal vertical
fillets. This electrode has an approximate weld metal recovery of
190%.
TRUWELD 7028 - AWS A5.1 E 7028
A low hydrogen electrode with a high iron powder addition used for
fillets in thick restrained sections of constructional steel. For use
in the horizontal and flat positions. The weld metal recovery of the
electrode is 150%.
TRUWELD 7048 - AWS A5.1 E7048
A low hydrogen, iron powder electrode designed for welding in the
vertical down position.
TRUWELD 8018-B2 - AWS A5.5 E8018-B2
A low hydrogen, iron powder electrode for use in all positions except
vertical down. Used for welding Cr-Mo steels of similar composition.
TRUWELD 8018-B2L - AWS A5.5 E8018-B2L
This electrode is similar to the TRUWELD 8018-B2 but is designed for
use in the as welded condition.
TRUWELD 8018-W - AWS A5.5 E8018-W2
A low hydrogen, iron powder electrode used for the welding of
weathering-type structural steels. Can be used in all positions except
vertical down.
TRUWELD 9018-G - AWS A5.5 E9018-G
A low hydrogen, iron powder electrode used for welding structural
steels of similar composition with a tensile strength up to
600N/mm². Can be used in all positions except vertical down.
TRUWELD 9018-B3 - AWS A5.5 E9018-B3
A low hydrogen, iron powder electrode for use in all positions except
vertical down. Used for welding Cr-Mo steels of similar composition.
TRUWELD 10018-D2 - AWS A5.5 E10018-D2
A low hydrogen, iron powder electrode for use in all positions except
vertical down. Used for welding ferritic high strength low alloy
steels.
TRUWELD 11018-G - AWS A5.5 E11018-G
A low hydrogen, iron powder electrode for use in all positions except
vertical down. Used for specific sub-zero toughness requirements for
high strength steels.
TRUWELD 12018-G - AWS A5.5 E12018-G
A low hydrogen, iron powder electrode for all positional use except
vertical down. This electrode is designed for welding high yield
strength alloy steels where the weld metal properties most match those
of the parent material after normalising, followed by quenching
[1][USEMAP:img37.gif]
References
1. LYNXIMGMAP:http://www.trwelding.co.uk/page6.html#map882
---
STORING & RECONDITIONING ROD
----------------------------
From: http://www.metalsmith.org/edu/materials/weldrodstore.html
--------------------------------------------------------------
Storage and reconditioning of Welding Rod
All of the electrodes listed below should be stored dry at room temp when
in unopened cartons
Electrode Recommended Holding Oven Reconditioning
Classification Storage open
Boxes
E-XX10 Dry @ room temp Not Recommended Not done
E-XX11 Dry @ room temp Not Recommended Not done
E-XX12 Dry @ room temp Not Recommended Not done
E-XX13 Dry @ room temp Not Recommended Not done
E-XX14 150 - 200 F 150 - 200 F 250 - 300 F 1 hr.
E-XX20 150 - 200 F 150 - 200 F 250 - 300 F 1 hr.
E-XX24 150 - 200 F 150 - 200 F 250 - 300 F 1 hr.
E-XX27 150 - 200 F 150 - 200 F 250 - 300 F 1 hr.
E-60 or 7015 250 - 450 F 150 - 200 F 500 - 600 F 1 hr.
E-60 or 7016 250 - 450 F 150 - 200 F 500 - 600 F 1 hr.
E-7018 250 - 450 F 150 - 200 F 500 - 600 F 1 hr.
E-7028 250 - 450 F 150 - 200 F 500 - 600 F 1 hr.
E-80 or 9015 250 - 450 F 200 - 250 F 600 - 700 F 1 hr.
E-80 or 9016 250 - 450 F 200 - 250 F 600 - 700 F 1 hr.
E-80 or 9018 250 - 450 F 200 - 250 F 600 - 700 F 1 hr.
E-90 12015 250 - 450 F 200 - 250 F 650 - 750 F 1 hr.
E-90 12016 250 - 450 F 200 - 250 F 650 - 750 F 1 hr.
E-90 12018 250 - 450 F 200 - 250 F 650 - 750 F 1 hr.
E -XXX-15 or 16 250 - 450 F 150 - 200 F 450 F 1 hr.
Stainless 250 - 450 F 150 - 200 F 450 F 1 hr.
When being reconditioned, electrodes should not be baked for more than 4
hours and should be kept at temp for at least 30 minutes. Baking more
than 3 times is not recommended.
--- End included stuff ---
- Mike
--
Michael Spencer Nova Scotia, Canada .~.
/V\
mspencer at tallships.ca /( )\
http://home.tallships.ca/mspencer/ ^^-^^
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