Vulcan entered the long bar quench and temper market and now the Heat Treating division is the largest long bar, induction heat treater in the world with annual. Caution: All material included in this chart is advisory only, and its use by anyone is voluntary. In developing this information, Fastenal has. Esparragos #B7 #Cadmiados #Fluorocarbonados #Galvanizados #Quito # Ecuador [email protected]

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The corresponding nuts standards are A grade 8M and F group 2. At least Can We say the stud bolts are stronger than machine bolts?

Which is category for Mushroom Head roofing bolt without neck to be manufactured?

What is the heat treatment process of astm a grade b7m??? If washers were to be required what would it be? Hi, please let us know what is the difference between A and A We have a valve with Grade B7 bolts that need to be change out, we will need longer bolts when going back together. Neil- A B7M does not specifically cover washers, although I guess theoretically you could make them from the same material.

ASTM A193 B7 vs. A193 B7M

Dear sir, May you help me about material specifications… I have a problem about material MS Regardless, the hardness testing should be completed after the final heat treatment. Thanks a lot, Ashkiani. While as per clause 6. Ari- There are some similarities in tensile and yield, but they are not identical.


Esparrags, I would like to clarify if the commonly referred bolt classes class 1,class 2 is of the same meaning segregating b7 from b7m? You may need to contact an engineer or metallurgist. Richard — 2H and 2HM nuts are not the same strength 2HM are lower strength, but rated for higher temperatureso I would recommend against substituting one for the other.

Esparragos ASTM A193 Gr. B7, 2 Tuercas A194 Gr 2h Bolt

I do not know why the documents you reference do not mention the line, perhaps they have not been updated since the change was made. At wellhead platformB7 bolts used instead of B7M esparragls, is there any big issue. While AB7 is specified relatively often in the construction industry, AB7M is a specification that is not seen as regularly.

Islam — You would need to get approval from the project engineer to change bolts. John — A section 9.

B16 or A Gr. Class 1 refers to lower strength materials whereas class 2 refers to higher strength, strain hardened material. It will depend on how they are being used and what the engineer designed for.


This is a different grade of material than A Grade B7. Will Grade 8 bolts work as a replacement? Thanks for your help.

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Maroof- A B7M is an alloy steel bolting standard, whereas A is a hot dip galvanizing standard, so they are two, very different specifications. ASTM A is a low carbon steel, low strength, general purpose bolt standard.

Why is this requirement only appied to an order if the customer specifies Supplimentary requirement S3. As espsrragos know B7M is having less strength but low hardness than B7, how it is helping us. It is not exact, but the closest of the four grades you listed. The most notable difference from esparragps manufacturing perspective is that when providing AB7M bolts, every individual bolt or stud in the lot must be hardness tested. Leave a Reply Cancel reply Your email address will not be published.

Is it possible to use A Gr. Jugal — I am sorry, but we are unable to answer that question.

B7 and B7M are two separate grades within A that are made from alloy steel. Tauseef- F washers are the recommended washer for A grades B7 and B7M, if washers are needed.