Re: [MW:21690] Bend test was broken on A312 TP 321

 Dear 

I following specification 

"Where specified in Contractor Standards or by Licensor, fabrication welds in Type 

321/321H or 347/347H stainless steels shall be subject to a thermal stabilization at 

910ºC±10ºC for 4 hours "

Vào 11:53:16 UTC+7 Thứ hai, ngày 25 tháng tám năm 2014, mahendra đã viết:

Dear friend

May I know y u have normalizing for 8 hours....
Is it any spec or job requirement...

On 23-Aug-2014 11:35 am, "nguyen tuan" <tuan...@gmail.com> wrote:

Hi All

 when we carryout PQR for material A 312 TP 321 welding to  A312 TP 321 (pipe 8'' SCH 120)

1. Welding Process GTAW+SMAW

2.Welding consumable ER347+E347-16

3.Interpass max 175 oC

4.pwht :900 Celsius at 8 hours 

5. Code applied ASME 

problems: 2 side Bend test were broken 

Can some body know or  have experience  above problem 

Tuan 

QA/QC posco

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