Hi Vijay.
Please read in ASME B16.5 in Table 1B List of Bolting Specifications Applicable ASTM Specifications, the A 320 L7 is high strength and recomended in note 10 : (10) This ferritic material is intended for low temperature service. Use A 194 Gr. 4 or Gr. 7 nuts.
Best regards
Agustin Jimenez
De: mahendra reddy <mahendra.mog@gmail.com>
Para: materials-welding@googlegroups.com
Enviado: mar, junio 29, 2010 4:01:41 AM
Asunto: Re: [MW:5780] Fastener Material Regarding
Dear Vijay
ASTM A194 Gr.2H IS for high temperature. following list is recommended.
Recommended Nuts and Washers
| Grade | Nuts | Washers |
|---|---|---|
| L7 | A194 Grade 4 or 7 | F436 |
| L43 | A194 Grade 4 or 7 | F436 |
| B8 Class 1 | A194 Grade 8 | SS304 |
| B8M Class 1 | A194 Grade 8M | SS316 |
| B8 Class 2 | A194 Grade 8, strain hardened | SS304 |
| B8M Class 2 | A194 Grade 8M, strain hardened | SS316 |
THX & RGDS
M.M.REDDY
QA/QC INSPECTOR (MECHANICAL)
METHANOL PLANT
DAMIATTA - EGYPT
0020168194532
M.M.REDDY
QA/QC INSPECTOR (MECHANICAL)
METHANOL PLANT
DAMIATTA - EGYPT
0020168194532
On Tue, Jun 29, 2010 at 10:14 AM, Vijay <k.vijayaraj@gmail.com> wrote:
Dear All,
For one of our project the fastener requirement was LTCS material as
per project Specification.
The Bolts we received were ASTM A320 Gr. L7 but Nuts we received were
ASTM A194 Gr. 2H
Whether is it is acceptable ????
Kindly clarify.
Regards,
Vijay.
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