Cavity Retainer Sets
Two and Three-Plate Cavity Retainer Sets offer accurate alignment and complete interchangeability DME Standard Cavity Retainer Sets are available in 49 standard sizes from 6" × 10 7 ⁄ 8 " to 23 3 ⁄ 4 " × 35 1 ⁄ 2 ". Each size is offered in various cavity plate thickness combinations in your choice of DME No. 1, No. 2, No. 3 or No. 7 Steel (No. 7 available up to 2 7 ⁄ 8 thick standard). DME’s precision-built interchangeable construction makes possible the wide variety of two-plate combinations as well as the three-plate construction.
DME No. 1 Steel DME No. 1 Steel is a medium carbon (SAE 1030), silicon-killed forging quality steel with approximately 25% greater tensile strength than typical low-carbon warehouse steels. It machines easily, but is not “sticky,” permitting a faster and smoother cut. DME No. 2 Steel DME No. 2 Steel is an AISI 4130 type steel. It is supplied pre-heat treated to 271-321 Bhn (28-34 HRC). A high strength steel, it is ideal for cavity and core retainer plates, clamping plates and support plates in molds and dies. DME No. 3 Steel DME No. 3 Steel is a P-20 AISI 4130 (modified) type cavity steel. Exceptionally clean, it is pre-heat treated to 271-321 Bhn (28-34 HRC). It provides high hardness, good machinability and exceptional polishability. DME No. 7 Steel No. 7 Steel is a modified AISI 400 series stainless steel for holder block applications. It is supplied pre-hardened to 32-36 HRC (302-340 Bhn). This stainless steel offers corrosion resistance and exceptional machinability but cannot be further hardened (see DME No. 6). For humid environments, corrosive plastics, “clean room” or “100% stainless” applications, it is an ideal choice for all structural (non-cavity/core) mold plates.
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