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What standard/nomenclature is this? (Zinc coating)
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Posted by: kamranwasti

11/01/2006, 00:46:44

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Dear friends,

I hope you all read this in the best of spirits and health.

I am Kamran Wasti from Lahore, Pakistan.

I am faced with a slight problem in this firm that I joined recently.

The drawing here says that the galvanising coating on the bolt should be MZn5-C

Apparently we are following JIS but I cannot verify what standard is this. I have been told that this coating has a slightly golden shade.

The firm got this part made by another firm which reinterpreted this as MFZn5-C and gave us a bol whose Zn coating is completely silvery. Now this supplier is China-based.

Can someone tell me what nomenclatures/standards are these and what do the symbols in both of these specify?

Thanking you.

Regards,

Kamran








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Re: What standard/nomenclature is this? (Zinc coating)
Re: What standard/nomenclature is this? (Zinc coating) -- kamranwasti Post Reply Top of thread Forum
Posted by: dhananjayanraja

11/02/2006, 00:43:53

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Hi all,

In my opinion MFZn5-c is right.MFZn5-c specifies the type of surface treatment on your bolts. JIS standard for MFZn5-c coating is G 3010. G 3010 is used to specify the material SS or any free cutting steel and your bolts and nuts comes under this category.

Dhana,







Modified by dhananjayanraja at Thu, Nov 02, 2006, 00:58:12


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Re: What standard/nomenclature is this? (Zinc coating)
Re: What standard/nomenclature is this? (Zinc coating) -- kamranwasti Post Reply Top of thread Forum
Posted by: RBPrice

11/01/2006, 10:50:26

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Kamran - there is a widely used coating here in the US that applies a 0.2 mil (0.0002 in.) thick coating of zinc and then a yellow chromate coating over the zinc on mild steel parts. The result is a an iridescent yellow. I use it all the time on various machine components. It is also used a lot on electronic chassis and related parts where it is sometimes called Iridite a trademarked name.

Hope this helps.








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Re: What standard/nomenclature is this? (Zinc coating)
Re: What standard/nomenclature is this? (Zinc coating) -- kamranwasti Post Reply Top of thread Forum
Posted by: Kelly Bramble

11/01/2006, 08:15:40

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Kamran,

I have looked thru all of my zinc coating/finishing standards and I cannot find anything on MZn5-C.

This could be a company created specification based on a industry standard. I would contact the supplier and ask them for clarity or a copy of the special standard.

If this turns out to be a country or industry standard, please let us know!!!








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Re: Re: What standard/nomenclature is this? (Zinc coating)
Re: Re: What standard/nomenclature is this? (Zinc coating) -- Kelly Bramble Post Reply Top of thread Forum
Posted by: kamranwasti

11/23/2006, 23:35:53

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Dear All,

dhananjayanraja's advice is correct. Sorry for the late reponse but I somehow ended up deleting details about this forum.

Regards,

Kamran








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