/members-area/b/blog/posts/how-to-choose-plastic-mold-steel-a-complete-buyer-s-guideMeta description: Choosing plastic mold steel? Compare P20, 1.2311, 1.2738, 1.2312, 1.2085, 1.2316, 1.2083 and NAK80 grades by hardness, corrosion resistance and polishability. The grade of steel used for the cavity, core and mold base of a plas...en-USTelligent Community 12