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Bending HARDWIRE Each Hardwire material performs slightly different in a sheet metal break. In general Hardwire needs to be “over broken” to about 120 degrees to have the material at 90 degrees after spring-back. Tightly clamped, close tolerance hand breaks work the best, but the correct die set in a stamping style break work well also. Die sets should be minimum depth, so the material is impacted at the last second during the machine stroke. Some experiments may be necessary to get perfect angles, but once you have it, the material will perform very consistently. When breaking Hardwire, 12X based products will have the maximum spring back, followed by 3X2 based products. 3XS based products are the easiest to break and will spring back the least. Hardwire can also be bent using heat. Quick duration heat below 750 degree F will not change the microstructure of the wire and the material will bend more easily. High temperatures (red hot) will allow the Hardwire material to bend like a “wet noodle”, but is not recommended due to the annealing effect heat will have on the precise grain structure of the high carbon steel within the wire itself. |