Tutorial: What are ASTM D638 Type 1 Standard Tensile Bar Dimensions?
after Google, I found this. please verify before manufacturing.
made a tutorial because if someone wants another software it will help them too.
all dimensions are in mm, and the arc is tangent to the line with length 57 mm.
Answered with a tutorial: https://grabcad.com/tutorials/what-are-astm-d638-type-1-standard-tensile-bar-dimensions