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O1 Tool Steel Sheet, Precision Ground, Standard Tolerance, Inch, ASTM A681

Available in multiple versions

4.9 out of 5 stars 102 customer reviews

Price: $14.16 - $2,273.80
Product Specifications
Shape Sheet
Material Type Tool Steel
Grade O1
System of Measurement Inch
Specification Met ASTM A681
Material Composition Solid
UNSPSC Code 30000000

Currently showing 1-20 of 615 Next »
ASIN
The Amazon Standard Item Number (ASIN) uniquely identifies the item in the Amazon catalog.
Thickness Overall Width Overall Length Number of Items Price Quantity
   
B0050R15B6 1 inches 1-1/2 inches 18 inches 1
$124.83
B0050R15U2 1 inches 1-1/2 inches 36 inches 1
$215.29
B0050R1606 1 inches 1-1/4 inches 18 inches 1
$63.99
B0050R16NS 1 inches 1-1/4 inches 36 inches 1
$167.60
B0050R1732 1 inches 10 inches 18 inches 1
$596.43
B0050R17SC 1 inches 12 inches 18 inches 1
$660.07
B0050R18FY 1 inches 1-3/4 inches 18 inches 1
$137.06
B0050R1980 1 inches 1-3/4 inches 36 inches 1
$232.09
B0050R19MQ 1 inches 1 inches 18 inches 1
$57.40
B0050R19YY 1 inches 1 inches 36 inches 1
$170.60
B0050R1AFC 1 inches 2-1/2 inches 18 inches 1
$160.94
B0050R1AR0 1 inches 2-1/2 inches 36 inches 1
$251.00
B0050R1B38 1 inches 2 inches 18 inches 1
$151.99
B0050R1BGA 1 inches 2 inches 36 inches 1
$253.86
B0050R1C7I 1 inches 3-1/2 inches 36 inches 1
$420.12
B0050R1CIC 1 inches 3 inches 18 inches 1
$156.51
B0050R1D2W 1 inches 3 inches 36 inches 1
$258.25
B0050R1DPE 1 inches 4-1/2 inches 18 inches 1
$296.41
B0050R1E0S 1 inches 4-1/2 inches 36 inches 1
$482.83
B0050R1E7Q 1 inches 4 inches 18 inches 1
$216.71
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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 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.


Product Details

  • Shipping Information: View shipping rates and policies
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B00CZDPAI2
  • Average Customer Review: 4.9 out of 5 stars  See all reviews (102 customer reviews)

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

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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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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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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Overall Width: 2Number of Items: 1Overall Length: 18Thickness: 3/16 Verified Purchase
I made a great knife with this steel. It didn't warp during heat treatment when quenched in 130 deg F oil. Nice steel.
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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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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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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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Overall Width: 2Number of Items: 1Overall Length: 18Thickness: 1/4 Verified Purchase
I use this for making knives, it's easy to heat treat and temper in a regular oven. The only negative thing about the steel is it comes with mill marks so you have to be sure to sand them out when finishing your blades.
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