Material SA 335 P9 (P No. 5B) Welding with ER 80S-B8 or ER90S-B91

[Ch Bilal jovinda]

Dear Group Members,

We are working with material SA 335 P9 8mm thickness, which has a P number of 5B. For welding this material, we are using consumables ER 80S-B8 or optionally ER90S-B91.

I would like to request members who have experience welding with ER 90S-B91 (closely related to ER90S-B9) to share any necessary precautions or considerations that should be taken during welding.refere below we are taking care,

1.Preheat to 210 degree centigrade minimum.

2. Interpass 300 degree centigrade maximum.

3. What are other recommended?

Best regards,

Bilal Chauhadry,

[Vishwas Keskar]

Use ER90S-B8 

B91 is not a compatible consumable.

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[venkateswara reddy Desireddy]

Weld joint Post weld heating 100°C one hour should be maintained. 

Electric coil heating is preferred to maintain proper temperature.

Based on thickness PWHT to be done. 

To ensure weld quality go for helium leak test. 

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From: material...@googlegroups.com <material...@googlegroups.com> on behalf of Ch Bilal jovinda <chbilal...@gmail.com>
Sent: Monday, September 15, 2025 8:09:58 PM
To: material...@googlegroups.com <material...@googlegroups.com>
Subject: [MW:35814] Material SA 335 P9 (P No. 5B) Welding with ER 80S-B8 or ER90S-B91

 

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[patni engineers]

Dear Sir,

SA335 P9 is a highly weldable material. We have successfully completed a job for EIL using this material and have the relevant WPS PQR and PWHT documentation for P9.

We would be happy to share these with you if you are interested.

Regards,

Chandrakant

B.E Mech.

ASNT Level II RT/UT/PT/MPT/CSWIP

Patni Engineers. Mumbai. India

PED/2014/68/EU

welding shop AD2000/DIN EN ISO 3834

IBR Approved 

Factory Addreess- Pl Call 

To view this discussion visit https://groups.google.com/d/msgid/materials-welding/PARP264MB6204923EB91E147438F71694AA15A%40PARP264MB6204.FRAP264.PROD.OUTLOOK.COM.

[Sankaran Sp]

Dear friend

For wedding of this chrom & moly type steel 

Similar type composition consumable can be used 

Pre heat & post heating is essential

Interpass temperature to be maintained

Pwht also to be followed after welding.

Regards

Sankaran .sp 

Welding & metallurgy expert

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