AISI D2 is a high-carbon, high-chromium cold-work tool steel widely used for industrial slitter, shear and granulator blades. Chemistry, hardness, heat treatment, applications and cross-reference (SKD11, 1.2379, Cr12Mo1V1).
Corrugated slitting is one of the most abrasive industrial cutting applications. The substrate is a multi-layer composite of kraft paper + adhesive + flute geometry, running at 200–500 m/min. The wrong blade grade loses 50 % of life. This guide covers single-face, double-face and thin-board slitting, with grade maps and field cases.
Crusher blades take the largest impact loads in industrial cutting. A 30 mm M16 nut in a granulator feed will shatter a D2 blade in 200 cycles. This guide covers jaw, hammer, rotary and impact crusher blades for stone, ore, scrap and ASR.
Granulator rotor and bed knives see impact, contamination and abrasive fillers. The right grade, geometry and edge prep separates a 2-week knife from a 6-month one. This guide covers rotor, bed, screen and wear-strip selection for film, rigid, fibre and filled polymer recycling.
Paper slitting looks simple until you account for the substrate GSM, the caliper variation, the trim, the lay-flat tension and the line speed. This guide walks through the substrate map, the steel grade decision, the edge-prep and clearance targets, and the line-side conditions that determine whether your slitter lasts 7 days or 70 days.
Plate shear blades see impact, work-hardening substrate and variable stock thickness. The grade, hardness and chamfer choice drive a 10× difference in service life between a mill-spec blade and a generic one. This guide covers carbon steel, stainless, high-strength and abrasion-resistant plate.