42CrMo4 ( SAE 4140 ) Welding

[Sinan ARSLAN]

Hi,

As you seen on drawing we will do fillet weld at this ring.The material grade 42CrMo4 ( SAE 4140 ).

I searched on internet it must be apply preheating which degree nearly 316ᵒ C before welding and after welding it must be apply heat thearetment ( 590  ᵒC-600  ᵒC ) and than cool down at room temperature.

Now i am looking an electrode for this material.

At enclosed i added speciality for this material.Could you advice me an electrode for this material?Which electrode?

--
Saygılarımla.
Best Regards.

Sinan ARSLAN

Mechanical Eng. 

Welding Eng.

[Pieper QSI]

Dear Mr. Arslan,

 

For this kind of casting material we always use the following filler metal, it’s a GMAW wire. I’m sure you also can use this one for your application as well or you can look at your local supplier for a filler metal with similar code. If you choose another welding process you should also look in this direction.

 

G CrMo 1 Si / ER 80S-G / Union I CrMo / Böhler Thyssen

 

 

Met vriendelijke groeten / Best Regards

 

Herman Pieper

 

Pieper Quality Support & Inspection

Phone: +31 (0)521 380083

Fax:     +31 (0)84 7539225

Cell:     +31 (0)6 51691215

www.pieper-qsi.nl

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[Ramin Kondori]

If you need a matching filler metal, choose B grades like ER 80S-B1 or B2 or E8018-B1 or B2 electrodes. use 300c preheat and immediately after welding carry out PWHT without letting the part to cool down.

If you use ER80S-G check for the chemical analysis, they use different alloying elements in G grades. some have Ni, some have Cr+Mo, they give you different characteristics...


What is you application...?

1. Do you need your welds to have a minimum hardness and higher strength...?
2. or is it a high temperature application...?

It makes difference when you use 4140 for its hardness and strength rather than for creep resistance...

Regards

Ramin  Kondori

   QC/Welding Engineer 

         IWE AT 0070

   

[meisam shokri arfaei]

Dear Sinan,

I have such an experience. I did such welding with AWS A5.5 - E8018-B2. Other parts of the process which you mentioned in your post are mandatory to have a good weld.

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--
M.Shokri Arfaei
International Welding Engineer
RT, UT ASNT Level III
ERI-Metallurgy Lab. Manager
Tel: +98 21 66283693
Fax: +98 21 66283693
Mob.: +98 912 139 4023
Web: www.metallurgylab.com

[muhammad bilal]

Dear All!

We have a screw 7inch diameter made of AISI 4140, its edges are wear our we have to build up, what will be best welding consumable and procedure.

Is 300C pre-heat necessary.........also 590-600C is post heat of PWHT, what is holding time?

Regards

M Bilal 

[Rajagopal Kannan]

Dear Bilal,

Please Go for Preheating to 200 Deg.C, Use E 10018- D2 or 11018-M. PWHT- STRESS RELIEVE at 630 + 10 Deg.C for 2 Hours.

Thanks and best Regards,

K.Rajagopal

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[prem nautiyal]

Hi

We have successfully welded 42CrMo4 in past with E8018-B2, Preheat min. 150-200 degree celcius followed by PWHT.

Regards

Prem Nautiyal

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From: muhammad bilal <muhamma...@gmail.com>
To: material...@googlegroups.com
Sent: Tuesday, July 30, 2013 1:32 PM
Subject: [MW:18297] Re: 42CrMo4 ( SAE 4140 ) Welding

[Rudolf]

Hi Prem

I have a similar situation and I hope replies to the mail will also be of use to me. 

Code AWS d1.1

Existing wps eh36 to eh36 material

Qualified range groove thickness max 50mm without PWHT

The pqr coupon was eh36 to eh36 material

Current situation details

4140 bar 200 dia welded to 100 mm eh36 plate fillet weld throat is 16 mm.

Query 

Can I use the above wps by using appropriate electrode which is within the AWS 5.20.

Your advise will be appreciated

Thanks

Rudolf

Sent from my iPhone

[prem nautiyal]

Hi

I regret that i have not used the structural welding code AWS D1.1.

I think if you refer D1.1, you might get your answer.

However other group members who have used D1.1 may answer your query.

Regards

Prem Nautiyal

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From: Rudolf <rudol...@yahoo.com>
To: "material...@googlegroups.com" <material...@googlegroups.com>
Sent: Wednesday, July 31, 2013 4:09 PM
Subject: Re: [MW:18313] Re: 42CrMo4 ( SAE 4140 ) Welding