High Strength Steel

Design Guidelines

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1- Maintain a constant depth on the hat section

2- Keep radii as small as possible

3- Form 90 degree side walls

4- If the side wall is not at 90 degrees, try to apply the same angle to the opposite side

5- The side of the hat section that is sprung open has a tendency to twist the entire rail

 

 

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1- When forming an emboss or surface formation into a relatively flat HSS part, the break lines need to be sharp and crisp

2- Short flange or bead must be added when the emboss or surface formation is open to the part’s trim edge, to prevent excess or loose metal along the edge

 

 

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1- When forming an outside corner, there is a tendency for the material to split. To minimize the splitting condition, the flange area must be minimized

2- On the inside corners, lengthening the trim line minimized splitting

 

 

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In general, HSS stretches about 2-6%

HSS will resist compression due to the hardness of the material

Therefore,

1, 2, 3- Darts and notches must be used to equalize the shape and maintain part configuration

 

 

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1- When using HSS in B-I-W applications, it is best to operate on a developed blank, as close to the final shape as possible.   Only in areas where the trim is critical should a finish trim operation be added