Blue Book

AI Visibility Index · Cell report

Measured

AI Visibility Index: Castings in Michigan

When a buyer asks an AI assistant for a castings supplier in Michigan, these are the companies that get named. This is what we found when the cell was last measured.

  • 161 companies tracked
  • Last measured September 30, 2026
  • Next measurement October 30, 2026
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The headline numbers

Never named by AI

135 of 161

companies never appeared in a single buying question

They were asked the same 5 buying questions as everyone else in this cell and were not named once.

  • 26 named at least once
  • 135 never named
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Cell average
0.44of 15

Across all 161 tracked companies.

Top ten average
4.7of 15

The ten most visible companies in the cell.

A company's score is how many of the 15 measured answers named it.

The top ten in Michigan

These are the companies AI assistants named most often when Michigan buyers went looking for a supplier in this category.

Top 10 most AI-visible Castings companies in Michigan, measured September 30, 2026
RankCompanyAI visibility
1
Barron Industries Inc
70 employeesOxford, Michigan

9 of 15 answers

2
Shellcast Inc
30 employeesMontague, Michigan

7 of 15 answers

3
Calhoun Foundry Co Inc
30 employeesHomer, Michigan
2 name variants
  • Calhoun Foundry Companymost common5
  • Calhoun Foundry1

6 of 15 answers

4
Eagle Precision Cast Parts Inc
65 employeesMuskegon, Michigan

6 of 15 answers

5
Hoffmann Die Cast Corporation
170 employeesSt Joseph, Michigan

4 of 15 answers

6
Bernier Cast Metals Inc
1 employeesSaginaw, Michigan
2 name variants
  • Bernier Cast Metalsmost common2
  • Bernier Cast Metals, Inc.1

3 of 15 answers

7
EPS Industries
25 employeesFerrysburg, Michigan

3 of 15 answers

8
Kent Foundry Co Inc
40 employeesGreenville, Michigan
2 name variants
  • Kent Foundry (Foundrion Group)most common2
  • Kent Foundry1

3 of 15 answers

9
Rapid Cast Technologies LLC
5 employeesTemperance, Michigan

3 of 15 answers

10
RLM Industries
125 employeesOxford, Michigan
2 name variants
  • RLM Industriesmost common2
  • RLM Industries, Inc.1

3 of 15 answers

33 more companies were named at least once. Companies outside the top ten are counted in the averages but not named here.

Also named, based in another state

AI assistants named these companies too, but MacRAE'S lists them in a different state, not Michigan. They belong to that state's ranking, not this one.

CompanyStateMentions
Astech Inc.Indiana6 of 15
Supreme CastingWisconsin3 of 15
Asama Coldwater Manufacturing (ACM)Pennsylvania2 of 15
Eagle AlloyTennessee2 of 15
International Machining Inc. (IMI)Ohio1 of 15

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The five questions we asked

Every company in this cell is measured on the same questions, written the way a buyer would type them. That is what makes the ranking a comparison rather than a collection of anecdotes.

  1. 1“Best castings suppliers in Michigan”
  2. 2“Who supplies precision machined aluminum die cast housings in Michigan”
  3. 3“I need a Michigan casting partner for a 10,000-piece hydraulic valve body run, who should I talk to”
  4. 4“Top castings suppliers in Michigan for industrial OEM buyers”
  5. 5“Which Michigan casting suppliers can handle complex thin-wall investment castings with secondary machining”
  6. 6“List 20 castings companies in Michigan with their specialties.”the roster question

Each question is asked more than once, which is why a company's score is out of 15 answers rather than out of the number of questions.

Where AI drew its answers from

These are the sources the answers in this cell leaned on most, ranked by how many of the named companies each one stands behind.

  • rlmcastings.com
    2 companies
  • acracast.com
    2 companies
  • bernierinc.com
    2 companies
  • calhounfoundry.com
    2 companies
  • dundeecastings.com
    2 companies
  • epsind.com
    2 companies
  • foundriongroup.com
    2 companies
  • michiganfoundries.org
    2 companies
  • wbcastings.com
    2 companies
  • wolverinebronze.com
    2 companies
  • barron-industries.com
    1 company
  • acmecasting.net
    1 company

52 sources were cited across this cell's answers from 48 domains. A directory page often stands behind several companies at once; a company's own site usually stands behind one.

Michigan in context

Michigan ranks 6th of 9 measured states in this category. Each bar is the share of that state's tracked companies that AI assistants named at least once; across every measured state in this category the share is 18%.

Michigan (this report)Other measured statesCategory average (18%)

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More published reports in Michigan