First, we use a flat ground D2 which we understand is cross ground. so grain direction is not known and we just assume that the grain is consistent and runs the length of our rectangular sheet.
I would be interested to know what going from 2 to 9 tempers does to the physical properties in your...
First our fracture tests are destructive ones in which we break the material across its width fracturing it through its thickness while we measure the applied force.
We tested both lots of clips after heat treat and before the powder coating process. Test results at that point were as expected...
We powder coated some D2 Tool steel parts in two batches. The two batches were both heat treated to a hardness of 60-62 HRC. Both batches were double tempered at 400F. However the 2nd batch's fracture force dropped by almost 25% after painting, when the first batch did not drop significantly. We...
