Mold Plates - MOLD BASE

1 mold Plates mold Plates mold base Industries, mold PLATESMEET CUSTOMERS NEEDSMBI offers a full line of exceptional moldplates, clamping Plates , ejector platesand spacer blocks in virtually any size upto 40" x 60", all furnished in the samehigh quality steel grades used in ourmold sets. Whether you need precisionground Plates , semi-finished ground orraw Plates , MBI has the materials andmachining services required to meetyour needs. We realize our customersdemand quality, and we strive to meetthose 1972 MBI has been dedicated toserving our customers needs by offeringsuperior mold Plates , custom mold basesand self-lube components, all at competi-tive prices. Our standard grade steels #1 (ASTM A-36), #2 (AISI 4130), #3 (modified P-20),#4 (stainless steel holder block) and ourspecialties, such as H-13 and aluminum,deliver quality products to our SPECIFICATIONSMBI uses only high quality steels intheir mold bases and plate items.

2 Thisassures reliable mold performancewhether it be the Basic Number 1, 2, 3or 4 steels or the specialties such asH-13, stainless or aluminum. Themoldmaker and end user can beassured of the quality of these #4 STEEL-FREEMACHINING STAINLESSHOLDER BLOCK STEELH older blocks made from MBI s pre-hardened stainless have excellentmachinability, uniform hardness andsuperior resistance to corrosion, causedby engineering resins and humidworking or storage conditions. Lowerproduction costs are also achievedthrough greater heat transferfrom corrosion-free waterchannels. MBI s pre-hardened stainlessholder block isan AISI 420F(modified) steel pre-heattreated to 340 HB for superior quality."Stainless bases are today consideredstandard by MBI.

3 "GENERALCHARACTERISTICSMBI #4 Steel is a chromium alloywhich is supplied in the hardenedand tempered #4 Steel is characterized by: excellent machinability. Good corrosion resistance. Uniform hardness in all dimensions. Good indentation properties combine toproduce a steel with outstandingproduction performance. The practical benefits of goodcorrosion resistance in a holdersteel are: Lower mold maintenance costs, , molds stored or operated in humidconditions require no special protection. Lower production costs since watercooling channels are unaffected by cor-rosion, ensuring consistent cycle SPECIFICATIONS(1, 2, 3 and 4 are in stock; other grades are available)MBIMBIMBI MBINo.

4 1 No. 2 No. 3No. 4 TYPE ASTMMODIFIEDMODIFIEDSTAINLESSA-36 AISIP-20 STEEL4130 HOLDER BLOCKHARDNESS 262/321 262/321340 BRINELLBHNBHN37 RC (AVERAGE)BASIC ANALYSIS%%%% MAX------SULFUR .60/..15/. ------ .02 MIN------The practical benefits of the excellent machinability are: Lower mold production costs (due to less wear of thecutting edges on the milling and drilling tools) and increasedcutting speed can be used giving shorter machining #4 Steel is primarily intended for holders and bolsters forplastic and rubber molds. It provides a completely stainlessmold with high corrosion TREATMENTMBI #4 Steel is intended for use in the as-delivered condition, , hardened and tempered to 340 Brinell, 37 Rc (Average).

5 MACHININGMBI #4 Steel greatly improves machinability compared toconventional AISI 420 steels hardened and tempered to 37Rc. With most steelmakers standardizing on sulfur content to .015 percent, machinability of these materials is nowsignificantly STRENGTHA pproximate values; samples taken from a round bar, 1" diameter. Hardness: 340 BrinellTesting temperature:IzodKU 680F (200C) strength2830 TENSILE STRENGTHA pproximate values; samples taken from a round bar,1" diameter. Hardness: 340 BrinellTesting (200C) Tensile strength (Rm) strength (Rp ) of area (Z%) (A10%) of holeDiameter2xD6xD8xD10xDin/mmrpm/feed (rev. mm/in) 1435/.06 1310/.05 1190/.

6 002 . 900/.11820/.08740/.. 475/.19435/.15 395/.. 310/.22285/.17260/ .. tools andRoughFinishhigh speed steel toolsmillingmillingDepth of cut (t) inmin. toolsISO machining groupP30 P40P10 P20 Cutting speed (v) 330295 380 3020 35 High speed steel toolsCutting speed (v) 10065 115 3020 35 PROPERTIES OF #4 STEELMold base Industries, & 7501 Derry Street Harrisburg, PA 17111-5230 Telephone: 800-241-6656 Manufacturing FAX: 717-564-2250 Office FAX: 717-564-7705 Internet: E-mail: removal is recommended when depth of hole is > 4 x cooling should be base Industries, & 7501 Derry StreetHarrisburg, PA 17111-5230 Telephone: 800-241-6656 Manufacturing FAX: 717-564-2250 Office FAX: 717-564-7705 Internet: : with Quality in the USA