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I Forge Iron

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1 hour ago, aessinus said:

Do you happen to have that original image or source?   I'd like to have it color printed on mylar for my shop.  It would greatly reduce some of my explanations.


51 minutes ago, ThomasPowers said:

Shows everything for plain Iron Carbon alloys; does not deal with things like D2---I don't see a solutioning carbides range on it...but I'd sure like to source some copies of it to post in my shops and at the University!

I found it at the following link using a quick google search. Maybe it'll be helpful. Maybe C-1 has a better source for it too. http://hghouston.com/resources/material-property-data/pictorial-guide-to-basic-metallurgy

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I. F. I. Citizens,

Life does not begin before coffee.

Whilst drinking same I reread this thread and discovered that I, too, would love a copy of the chart.

I noticed that it was generated by the Hendrix Group. (it's on the chart).

A search resulted in a net hit for a Mr. David Hendrix of the Hendrix Group.


They are corrosion and alloy specialists.

My coffee is fully imbibed and it is time that I rejoin life.

Perhaps someone, here, would like to approach this organization and request "copies" of the chart.

Just sayin,


p. s. I did not see Mr.Cochran's post whilst writing mine.

p. p. s. Tempil Inc. seems to be the holder of copy right

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Unfortunately, I don't know where it came from. A friend gave it to me. The copy I have is just a page with with advertisements on the back. There is a copy right, but if you contact them, I wouldn't be suprised if the are willing to give permission. I just noticed the other day that the same exact chart is in the $50 Knife Shop.

So far, it's my all time favorite chart for metallurgy. 

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  • 2 weeks later...
  • 3 months later...
On 2/2/2017 at 1:41 PM, Frank Turley said:

FYI, the color chart was originally put out by the Tempilstik Company, and I understand they have discontinued making them. Fortunately for me, I was able to acquire a large teacher's copy long ago, which is in the shop behind glass in a frame.

Companies used to give out all sorts of really excellent informational flyers  and posters.. Not anymore..    What a treasure you have there Frank.. :)

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Big Gun et al.,

Here is another method for making a replacement spring for a post vise.

It is one of Mr. Andy MacKenzie's Blacksmithing basics volume seven.

It is a good basic series of tutorials that I have found very informative for me in the past.


Hope it proves of interest to some of the fraternity,



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the chart can be found at www.hghouston.com. Glenn Conner telephoned them and got their permission to make the chart available to us here. There is a thread concerning that topic that appeared here late 2016, or early 2017 .


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if is in PDF form here.. 

2 hours ago, BIGGUNDOCTOR said:

Sounds like a ton of unnecessary work for a vise spring that can be made out of mild steel flat bar and bent cold.

Sorry but I have found mild steel springs for this type of application unless fairly thick don't hold up with daily use..  Forging one out of 5160 isn't a big deal and it won't need to be hardened or tempered for a good service life.. 

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