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today, we are a member of online shop group with over 70 retail stores in usa and tokyo employing over 1,000 staff. I made a great knife with this steel. It didn't warp during heat treatment when quenched in 130 deg F oil. Nice steel.--------Update as of 8/17/16I probably don't need to extol the virtues of O1 steel, but I'm updating the review to say that the knife is still sharp. It took an edge that shaved hair and cut paper initially. It's still dangerously sharp from what I've heard from the end user. I should also mentioned that it polishes to a nice mirror finish.Got the stock in the mail packaged and labelled as O1 and all the specs.Had a REALLY hard time working with it in the shop (machinability of O1 is supposed to be very nice)and then when it came to heat treat it wouldn't harden! Quench after quench, nothing doing.I even tried a water quench for good measure.Then i got the bright idea that "maybe they sent me the wrong thing?"By shot in the dark I guessed D2 steel. So i tried a D2 heat-treat (1850F and AIR quench)and boom: martensite galore. file skated right off. sample piece snapped like a toothpickin the vice, etc. Perfect heat treat... for D2.I guess i'll make the most of it and try to work with it, but i ordered O1 and was hoping for just that.This is really easy working steel to make a knife and very easy to heat treat.You can watch tons of YouTube videos to see heat treatments and forge designs. I built a simple two brick forge from bricks I purchased on amazon and the results turned out great.I would recommend using a belt grinder on this metal instead of a file jig. Using a file just takes a long time. But the results are well worth it.Both of the knives pictured were built using a file jig and the heat treatments turned out very well.Also, this steel doesn't seem to take a great polish (or I'm doing it wrong). It get hazy rather quickly.Seems to be to spec. Oil steel is easy to harden but a good temper with stock this thin has to be done in a bath of molten lead. I have a lead pot for bullet casting that works very well for this task.I make custom wood carving knives with this steel and the period they go without sharpening is amazing.This is the only tool steel I have found that will hold up to the rigors of maintaining an edge and not breaking the points by "prying."I purchased this material to make a simple chef's knife for my kitchen. It arrived exactly to spec with the material properly annealed and easy to work with. I was able to cut out the shape, drill the holes, and do all of the work necessary without any trouble. I hardened it to spec and tempered it and have been using this knife for over a year now. It holds the edge quite well and is not terrible about rust either. I was afraid the high-carbon content would give me problems with rusting. YES, it will rust if you leave it in water or attempt to put it in the dishwasher, but as long as you clean it up at some point after using it, you're not going to get any deep rust on it. Even if you get surface rust forming you should be able to soak it in vinegar for a little while and just brush it right off. I have used O1 tool steel from amazon to make several different knives and have not had any trouble with inconsistent quality or poor durability. The price is also quite good if you mess around with the widths and lengths of steel bar. Sometimes wider sizes are cheaper than narrow sizes so be sure to look around a bit before ordering if you're flexible on exactly what you need. I hope that's helpful.I was pleased to see the package when these arrived was labelled Starrett. For those who don't know Starrett is a Mass based manufacturer of machinists tools. O1 tool steel can be easily hardened in the home workshop (plenty of tutorials and videos online) and the price for these is very fair compared to similar at McMaster Carr.
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~This is very good steel to make a knife are blade out of it, good service , price is a little hi but if you wont good steel you have to pay, this is my sec, one, so I am well please with it, I Can't Keep Calm It's My Cousin Birthday Unicorn Theme Girl T-S Industrial Scientific => Raw Materials => Metals Alloys Wholesale Cheap Store Handmade O1 Tool Steel Sheet, Precision Ground, Annealed, 1/8" Thickness, Buy Low Price Guarantee I Can't Keep Calm It's My Cousin Birthday Unicorn Theme Girl T-S Prices Clearance 100%
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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
Material Type:Tool Steel
Item Thickness String:1/8 Inches
Item Width String:2 inches
Item Length String:18 Inches
Number of Items:1
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.