What Are These Alloys?

  • Thread starter Thread starter madstudio
  • Start date Start date
  • Tags Tags
    Composition
Click For Summary

Discussion Overview

The discussion revolves around the identification of two specific metal alloys, which are suspected to be soft magnetic alloys. Participants explore the context of the inquiry, which is related to a project involving electromagnetic shielding and the need for a replacement material that closely matches the original composition.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant presents two alloy compositions and seeks recognition and naming of these alloys.
  • Another participant asks for the context of the question, inquiring if it is for schoolwork.
  • The original poster clarifies that they are not a student and are looking for expert help for a project.
  • A participant questions the remaining material in each alloy, noting that the percentages do not add up to 100%.
  • The original poster explains that they need the composition for a broken part replacement in an electromagnetic shield and expresses a desire for a historically accurate material.
  • Another participant suggests that if the shield is magnetic, mu-metal may be the best option and provides a resource for custom shielding solutions.
  • The original poster acknowledges a typo regarding the type of shield and mentions that the original alloy has different resistivity, which is critical for their application.
  • Concerns are raised about the difficulty of reproducing the original alloy due to proprietary mixes and processing.

Areas of Agreement / Disagreement

Participants express uncertainty about the identification of the alloys, and there is no consensus on the exact compositions or their historical accuracy. The discussion remains unresolved regarding the best approach to find a suitable replacement material.

Contextual Notes

Participants note that the percentages of the alloy compositions do not total 100%, indicating potential missing components. There is also mention of proprietary processes that may complicate the reproduction of the original alloy.

madstudio
Messages
4
Reaction score
0
Hi everybody :smile: my first post here and I wonder can you recognize and name this two alloys?
first:
Ni27.5%
Fe63%
Cr5.5%

second

Ni60%
Fe25%
Mo2%
Cu3.3%
Mn1%
Cr5.5%

It looks like some soft magnetic alloys but ... :frown:
Cheers
 
Engineering news on Phys.org
madstudio said:
Hi everybody :smile: my first post here and I wonder can you recognize and name this two alloys?
first:
Ni27.5%
Fe63%
Cr5.5%

second

Ni60%
Fe25%
Mo2%
Cu3.3%
Mn1%
Cr5.5%

It looks like some soft magnetic alloys but ... :frown:
Cheers

Welcome to the PF.

What is the context of your question? Is this for schoolwork?
 
berkeman said:
Welcome to the PF.

What is the context of your question? Is this for schoolwork?
Thanks. Nope, I'm not a student, I'm looking for some expert help for my project. Hope that's OK.
 
madstudio said:
Thanks. Nope, I'm not a student, I'm looking for some expert help for my project. Hope that's OK.

What kind of project? What is the remaining material in each alloy? (the percentages do not add up to 100%)
 
berkeman said:
What kind of project? What is the remaining material in each alloy? (the percentages do not add up to 100%)
Electromagnetic shield. I need this composition for broken part replacement. Unfortunately I don't know exact chemical composition, I'm looking for close "modern" material since this shield was made long time ago. I know that it's possible to substitute this composition with superior materials like mumetal but it will be nice to find "historical correct" one. At last, mumetal is my last solution.
 
madstudio said:
Electromagnetic shield. I need this composition for broken part replacement. Unfortunately I don't know exact chemical composition, I'm looking for close "modern" material since this shield was made long time ago. I know that it's possible to substitute this composition with superior materials like mumetal but it will be nice to find "historical correct" one. At last, mumetal is my last solution.

Interesting problem. Do you mean "electromagnetic" or "magnetic" shield? There is a difference.

If it is magnetic shield, the mu-metal netic+conetic shielding is your best bet. You can get lots of info and custom shield quotes from here:

http://www.magnetic-shield.com/

I've used them for several projects, and found their customer support to be very good. You can get kits to bend up your own custom shields, but as you know, you will need to get them annealed after you bend them or they lose most of their effectiveness.

If the alloy mixes you show are from analysis of the materials of the old existing shields, it may be difficult to reproduce the original recipe. Often the mixes and processing are proprietary to the company that made the shields in the first place.
 
Yes, my typo, magnetic shield. Yes, I'm familiar with mumetal and it's properties, problem is that "original" alloy has different resistivity . Unfortunately in this application it really matters. It seems that this alloy is really unknown :frown:
 

Similar threads

  • · Replies 6 ·
Replies
6
Views
4K
  • · Replies 5 ·
Replies
5
Views
7K
  • · Replies 6 ·
Replies
6
Views
3K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 4 ·
Replies
4
Views
2K
Replies
7
Views
3K
Replies
3
Views
12K
Replies
4
Views
4K
Replies
8
Views
4K
  • · Replies 3 ·
Replies
3
Views
2K