Good suggestion SparWeb. I had noted the Niagara-LaSalle information about the quench cracks but had not actually performed a hardness test. As you graciously pointed out my acceptance of third hand information should be validated :)
Our company has machined thousands of a hydraulic component we call a banjo bolt, using round Stressproof (tm) without any failure. Our customer decided to award this job to another vendor who would produce the same component using hex Stressproof material, for a lower cost to our customer...
