Mechanical Properties of A681 tool steel
Mechanical Properties of A681 tool steel
(OP)
I am looking for the yield and tensile strengths of ASTM A681 tool steel. Can anyone out there provide a resource?
Thanks,
Thanks,
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Mechanical Properties of A681 tool steel
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RE: Mechanical Properties of A681 tool steel
Sorry I couldn't gie you some specifics on your material.
Best regards,
Jay
RE: Mechanical Properties of A681 tool steel
RE: Mechanical Properties of A681 tool steel
What I have found thus far is that ASTM does not publish strength or hardness specifications for A681 (and most other) tool steels. Their very purpose is to be made into a tool of some sort and then heat treated to obtain the desired mechanical properties. Therefore, unless someone has done some testing on this material, the data is probably not available.
Background: For several years, this off-the-shelf "drill rod" has been succesfully utilized in a pinned connection on a machine. As there are several pins used in any one machine and replacement is not too difficult, the occassional pin breakage has been just shrugged of as a part of life. My inquiry comes from the curiosity of what magnitude of load can cause these to shear.
The obvious course of action is to start using a material with known values and material certification. For proper selection, however, I'd still need to get a handle on the load. Testing a couple of samples seems to be my best bet. Any other ideas????
RE: Mechanical Properties of A681 tool steel
Physical testing of parts is the best solution. If you are interested in shear properties, the specifications below may provide guidance on how to conduct the testing:
ISO 8749 Pins and grooved pins -- Shear test , available from ISO at: http://www.iso.ch
ASTM B769 Standard Test Method for Shear Testing of Aluminum Alloys , available from ASTM International at: http://www.astm.org
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RE: Mechanical Properties of A681 tool steel
http://www.crucibleservice.com/eselector/selectorindex/selectorindextitle.html
you can use the Tensile strength estimate from Shigley:
Su [psi] = 500*HB [Brinell hardness]
Su [MPa] = 3.45*HB
RE: Mechanical Properties of A681 tool steel
I got this information from Machinery's Handbook, 24th ed, page 1486-1487.
I hope this helps. Dowel pins are pretty cheap and you can easily grind snap ring grooves into them.
Tony