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  • O1 Tool Steel Sheet, Precision Ground, Annealed, 3/32" Thickness, 1/2" Width, 18" Length
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O1 Tool Steel Sheet, Precision Ground, Annealed, 3/32" Thickness, 1/2" Width, 18" Length

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List Price: $16.08
Price: $14.54 & FREE Shipping on orders over $35. Details
You Save: $1.54 (10%)
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Product Specifications
Brand Name Small Parts
Part Number 53978
UPC 049659539783
Exterior Finish As Ground
Temper Annealed
Thickness 3/32  inches
Thickness Tolerance + 0.001  inches
Overall Width 1/2  inches
Width Tolerance 0.000/0.005  inches
Overall Length 18  inches
Length Tolerance + 1/4  inches
EAN 0049659539783
Indentation Hardness 50-62 rockwell_c
Number of Items 1
Production Method Ground
Tensile Strength Max 85  KSI
Specification for this product family (See all  products)
Item Shape Sheet
Material Type Tool Steel
Grade O1
System of Measurement Inch
Specification Met ASTM A681
Material Composition Solid
UNSPSC Code 30000000


Product Features

  • O1 tool steel has better machinability than A2 tool steel, and must be hardened in oil
  • Meets ASTM A681 specifications
  • Ground with high precision to the specified shape and size
  • Standard tolerance

Product Details

  • Shipping Weight: 4 ounces (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B000FMWCUO
  • Item model number: 53978
  • Average Customer Review: 4.9 out of 5 stars  See all reviews (27 customer reviews)
  • Amazon Best Sellers Rank: #185,137 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
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Frequently Bought Together

O1 Tool Steel Sheet, Precision Ground, Annealed, 3/32" Thickness, 1/2" Width, 18" Length + 360 Brass Round Rod, Unpolished (Mill) Finish, H02 Temper, ASTM B16, 0.125" Diameter, 12" Length + 360 Brass Rectangular Bar, Unpolished (Mill) Finish, H02 Temper, ASTM B16, 1/8" Thickness, 3/4" Width, 12" Length
Price for all three: $26.31

Buy the selected items together

Product Description

The O1 tool steel sheet has been precision ground and polished, meets American Society for Testing and Materials International ASTM A681 specifications, and has a standard tolerance. The O1 tool steel grade has better machinability than A2 tool steel. It must be hardened in oil, which can be done at relatively low temperatures for good dimensional stability. The sheet has been ground to achieve the precise shape and size.

Steel is an iron alloy with carbon and other elements that modify the steel to achieve specific properties. In general, steels with higher carbon content have greater strength, hardness, and wear resistance, while those with lower carbon content have more formability, weldability, and toughness. Carbon steels, which include most AISI-SAE grades in the 1000 range, are classified by their level of carbon content as low (below 0.3%), medium (0.3% to 0.6%) and high (0.6% and above). Alloy steels, which include AISI-SAE grades in the 1300 and 4000 ranges and above, incorporate elements such as chromium, molybdenum, and nickel to modify properties like machinability and corrosion resistance. Tool steels, which include most grades with a letter and number grade designation, have high carbide content for wear resistance, high hardness, and the ability to hold a cutting edge. Some tool steels are designed to resist deformation when used in elevated temperatures.

Tensile strength, used to indicate a material’s overall strength, is the peak stress it can withstand before it breaks. Wear resistance indicates the ability to prevent surface damage caused by contact with other surfaces. Toughness describes the material's ability to absorb energy before breaking, while hardness (commonly measured as indentation hardness) describes its resistance to permanent surface deformation. Formability indicates how easily the material can be permanently shaped. Machinability describes how easily it can be cut, shaped, finished, or otherwise machined, while weldability characterizes the ability to be welded.



Customer Questions & Answers

Customer Reviews

4.9 out of 5 stars
5 star
25
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See all 27 customer reviews
Will buy from these guys again.
Kevin G.
It is high quality and it comes clearly labeled with very valuable information about what temperatures are needed to both harden and temper it.
Will Kalif
The resulting blades are quite hard and hold an edge very well.
A. Swenson

Most Helpful Customer Reviews

23 of 23 people found the following review helpful By A. Swenson on December 7, 2011
Overall Width: 1/2Number of Items: 1Overall Length: 18Thickness: 3/32 Verified Purchase
I've made a set of woodcarving knives and several small belt knives from o1 and I'm well pleased. It comes fully annealed and is very easy to cut, machine, and grind. I've hardened all the blades I've made in a gas-fired forge with a reducing atmosphere, experiencing very little surface decarburization and no tendency for thin sections to burn. However, I did discover that holding thin (3/32") blades flat-side-on directly in the flame of the gas burner would cause them to warp slightly. Allowing the forge to get thoroughly hot and keeping the blade out of the direct blast of the burner alleviated this problem. I test for critical temperature with a small magnet and quench in vegetable oil.

Do observe the manufacturers' warnings not to temper this steel at temperatures above 450F as the steel can become brittle at tempering temperatures between 450-600F. I've tempered all the blades I've made in the kitchen oven at a nominal temerature of 375F (an oven thermometer registers 360F), keeping them at this temperature for a minimum of 1 hour and then quenching in water. The resulting blades are quite hard and hold an edge very well.

Next up a set of wood chisels and a couple of plane irons. No point in firing up the forge just for one item!
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11 of 11 people found the following review helpful By Will Kalif on April 7, 2011
Overall Width: 2Number of Items: 1Overall Length: 18Thickness: 1/8 Verified Purchase
I am using this steel for blacksmithing so the quality is important and the characteristics are important. It is high quality and it comes clearly labeled with very valuable information about what temperatures are needed to both harden and temper it. Very happy with this purchase. Great quality.
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10 of 10 people found the following review helpful By kwb on June 27, 2010
Overall Width: 1/2Number of Items: 1Overall Length: 18Thickness: 1/16 Verified Purchase
This is a convenient thing for making small tools (woodworking knives in my case).

Pros:
1. Thin enough you can use a propane torch to harden/anneal.

2. Ground flat on both sides means less work lapping later (though you need to lap).

3. Good quality steel.

Cons:
1. A bit pricey, a drawback when you only need small quantity.

If you have a better/cheaper supply go for it by all means, but I'm very satisfied with this purchase.
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5 of 5 people found the following review helpful By guy on June 19, 2012
Overall Width: 2Number of Items: 1Overall Length: 36Thickness: 1/8
I was looking for a good steel to use for form cutting a few custom knives for my grandparents. This stuff is decently easy to cut and file with a mill file but is definitely hard enough for a pocket knives purposes. Thanks for the good product.
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4 of 4 people found the following review helpful By Bryan C. on October 25, 2013
Overall Width: 1-1/4Number of Items: 1Overall Length: 18Thickness: 3/16 Verified Purchase
This 01 stock is great, especially for the price. I've used it make knives and it shapes very well. But, most importantly, heat treating this steel to a proper hardness is a breeze. And, for a knife, it really retains an edge while still being tough enough for heavy duty tasks. Great steel.
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4 of 4 people found the following review helpful By Taylor on May 28, 2012
Overall Width: 2Number of Items: 1Overall Length: 18Thickness: 1/4 Verified Purchase
It came exactly as it was advertised and it made one heck of a big knife after i was through with it. Steel can be found for cheaper on other websites, but usually in bigger pieces.
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3 of 3 people found the following review helpful By Emily Broyles on January 2, 2014
Overall Width: 2Number of Items: 1Overall Length: 18Thickness: 1/8 Verified Purchase
I've used this steel to make several knives now. Machining or blacksmithing this steel is as easy as it gets and heat treating almost couldn't be better. The only problem I've had was some warping during hardening on a 16 inch bowie I made. However all of my smaller pieces turned out fine so as long as you're not planning on making a claymore or greatsword I don't think you have to worry too much about warping. ;) Lastly, be careful on the size selection. I noticed that it is actually cheaper sometimes to get 2 inch wide steel rather than 1-1/2 inch. That seems a little odd so do some careful thinking about what you want and sizes of steel. If you can save money by buying 2 inch and drawing it out on the anvil, go for it.
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2 of 2 people found the following review helpful By Justin on May 7, 2014
Overall Width: 2Number of Items: 1Overall Length: 18Thickness: 5/32 Verified Purchase
promptly delivered as always, good, tough steel. I purchased this for knife making, (a little thick, but that's my fault =P ) this metal came with a nice(r) finish, ready to be worked on; no rust, dings, dents scratches. This O1 tool steel blank came with tempering/hardening instructions on the package.

I will be ordering my metal from this distributor again~
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