[TheForge] Re: Welding Rod
Rick
rick at smokyforge.com
Thu Jun 8 21:21:54 EDT 2006
WOW - That pretty much says it all. Thanks Mike - and Dave Brown, and
Jack Yates, etc.
Great stuff and thanks for keeping it when I didn't remember seeing it.
Rick
----- Original Message -----
From: "Mike Spencer" <mspencer at tallships.ca>
To: <theforge at mailman.qth.net>
Sent: Thursday, June 08, 2006 12:44 PM
Subject: [TheForge] Re: Welding Rod
>
>
>> 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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