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DME Has a Standard Assembly mold base for Most Any Molding or Die Casting Application

DME companys mold base standard has 4 main type:
1: American mold base standard, all dimensions of mold base and component adopt inch unit, It is suitable for Amerian area.
2:Europen mold base standard, all dimensions of mold base and component adopt MM unit, It is suitable for Europe area.
3:DME standard Small-Shuttle Mold Bases
4:DME Custom-Configured Mold Bases,DME Manufactures mold base as customers request, but it is very expensive.
Our company manufatures mold base as DME or custom standard for global customers, all components of mold base adopt DME standard,we finish all manufacturing of mold base that includes pockets, ejector holes, wateline holes, EJP, side lockes, slide slotes etc...
The following is the reasons why you need to select the DME standard bases
1. They are made of high quality, pre-finished mold and die steels that give you more for your money; more metallurgical consistency; more cleanliness In cavity steels; more reliability.
2. Assemblies, plates and components are pre-engineered to give you the economic and technical benefits of Interchangeability.
3. They are manufactured with the most advanced, precision equipment - and quality control tested to give you reliable performance.
4. They give designers more freedom and flexibility - more time to devote to the truly creative aspects of mold, die, and product design.
5. They give mold and die makers more time to concentrate on cavities and cores - thus Increasing productivity as much as 403/8.
6. They give molders and die casters more quality parts per hour, more profitability - with production proven construction that outlasts the longest runs.
7. They are readily available as you need them. The more popular assemblies are always in stock for same-day service. Our nationwide network of Service Centers means you have the products and the people near you to help you save time, money and inventory costs.
Standard DME Mold Bases have some special features:
1 CLAMP SLOTS that save platen space and provide maximum cavity area
2 TUBULAR DOWELS that provide more room for waterlines
3 STOP PINS welded to ejector plate to prevent loosening and ejection interference
4 ONE-PIECE EJECTOR HOUSING that gives. added strength and simplifies construction

D-M-E #1 Steel is a medium carbon quality steel with greater tensile strength than typical plain carbon warehouse steels. It machines easily, but is not “sticky”, permitting a faster and smoother cut. International comparisons: DIN 1.1178 (CK 30) and 1.1730 (C 45 W); JIS S 30 CM, S50C, S55C;ISO 683-1 C30E4
DME #2 Steel is a medium alloy steel specified for durability in structural applications. It is supplied pre-heat treated to 28-34 HRC (271-321 Bhn). A high strength steel, it is ideal for cavity and core retainer plates, clamping plates and support plates in molds. International comparisons: DIN 1.2312 (40CrMnMoS 8 6), 1.7218 (25CrMo4) and 1.2331 (41CrMoS4); JIS SCM 430; ISO 683-2 Type 1
DME #7 Steel is a modified AISI 400 series stainless steel for holder block applications. It is supplied pre-heat treated to 32-36 HRC (302-340 Bhn). This stainless steel offers corrosion-resistance and exceptional machinability but cannot be further hardened (see D-M-E #6). For humid environments, corrosive plastics, “clean room” or “100% stainless” applications, it is an ideal choice for all structural mold plates. International comparisons: none
DME #3 Steel is a P-20 AISI 4130 type cavity steel.Exceptionally clean, it is pre-heat treated to 28-34 HRC(271-321 Bhn). It provides good machinability, the ability to heat treat to higher hardness, and exceptional polishability.International comparisons: DIN 1.2311 G40CrMnMo7; JIS none; ISO none
D-M-E #5 Steel is an AISI/SAE H-13 type thermal shock resistant, hotwork die steel. Supplied fully annealed (approximately 200 Bhn; 13-20 HRC) for easy machinability, it can be subsequently heat treated to the desired hardness with a minimum of deformation. Mainly used for die cast dies, it is also suitable for plastic molds with exceptional hardness or polishability requirements. D-M-E #5 Steel meets or exceeds the acceptance criteria established by the NADCA as detailed in Technical Digest Number 01-80-01D. International comparisons: DIN 1.2344 (X40CrMoV5-1); JIS SKD 61; ISO 4955 H13
D-M-E #6 Steel is a modified AISI 420 type stainless steel. It is supplied fully annealed to 179-241 Bhn (18-23 HRC), making it readily machinable. Unlike D-M-E #7 steel, D-M-E #6 steel is a cavity-grade material that can be subsequently heat treated to the desired hardness and has excellent polishability. International comparisons: DIN 1.4028 (X30Cr13); JIS SUS 420 J 2; ISO none
DME regularly mixes steel types within a mold base assembly to deliver plates configured to your application requirements. You can select steel types for each plate, as available from the table at left, in any combination for your mold base



The item number system employed by D-M-E not only prevents the duplication of item numbers, but helps lessen the chances of error in the writing and production of orders. This is accomplished by incorporating actual dimensional data into the item numbers as indicated below
The item numbers for Standard Mold Bases in the A and B Series combine the NOMINAL Size (width and length), DME standard A series 7-7/8 mold bases
DME standard A series 9-7/8 mold bases
DME standard A series 10-7/8 mold bases
DME standard A series 11-7/8 mold bases
DME standard A series 13-3/8 mold bases
DME standard A series 14-7/8 mold bases
DME standard A series 15-7/8 mold bases
DME standard A series 16-1/2 mold bases
DME standard A series 17-7/8 mold bases
DME standard A series 19-1/2 mold bases
DME standard A series 23-3/4 mold bases
the Series (A or B) and the thicknesses of the A (or A -Clamping) and B Plates. Since all the standard mold plate thicknesses are acombination of a whole number and either 3/8 or 7/8, the designation 13 indicates 1 and 3/8; 17 indicates 1 and 7/8; 23 indicates 2 and 3/8, etc. For Example: 1016A-13-37 is the item number for a 97/8 × 16 A Series Mold Base with A plate 13/8 and B plate 37/8 thick.
The most frequently used Standard Assembly,the “A” Series Mold Base is available in 43 sizes from 7 7/8 × 7 7/8 to 23 3/4 × 35 1/2. See pages 50-135 for complete information
Identical to the A Series, with leader pins and bushings reversed.Specify AX and BX plate thicknesses when ordering (rather than A and B).
When cavities and cores are to be inserted into blind pockets, or machined directly into the A and B plates, the B Series Assembly is used. The Top Clamping Plate and Support Plate are omitted from the assembly.
The item numbers for the Stripper Plate Series Mold Base combine the NOMINAL Size (width and length), the letter X for Stripper Plate, the numeral 5 or 6 (plate series) and the AX plate thickness.Since the X plate thickness is constant at 7/8 or 13/8 , and the “BX” plate thickness is constant at 13/8 , 17/8 or 23/8,depending on the mold base nominal size and number of plates in the assembly, these thicknesses are not represented in the item number.For Example: 1818X-5-13 is the item number for a 177/8 × 18”, 5-plate X series Mold Base with a 13/8 thick AX plate. (In this case, the X plate is 13/8 thick, and the BX plate is 23/8 thick).
Most frequently used for molds requiring stripper plate ejection, the X Series Assembly is available with a Support Plate (6-plate series) or without a Support Plate (5-plate series)
The item numbers for the “AX” Series Mold Bases combine the NOMINAL Size (width and length), the letters “AX” and the thickness of the “A” and “B” plates. The “X-1” plate thickness is specified when ordering and is omitted from the item number.
For Example: 1212AX-13-37 is the item number for an 117/8 × 12 AX Series Mold Base with a 13/8 thick A plate and 3-7/8 thick B plate. The X-1 plate thickness (e.g. 7/8) is then specified when ordering.The item numbers for the “T” Series Mold Bases combine the NOMINAL Size (width and length), the letter “T” and the thickness of the X-2 and B plates
Since the thickness of the A -Clamping plate is constant at 17/8 or 23/8 and the X-1 plate thickness is constant at 7/8 or 13/8, depending on the nominal size of the mold base, these thicknesses are not represented in the item number
For Example: 1012T-23-17 is the item number for a 97/8 × 117/8 T Series Mold Base with a 23/8 thick “X-2” plate and 17/8 thick B plate. (In this case, the “A”-Clamping plate is 17/8 thick and the “X-1” plate is 7/8 thick)
The “AX” Series Assembly is used when the mold requires a floating plate to remain with the upper or stationary half of the assembly. It is basically an A Series Assembly with a floating plate ( X-1 ) added
The “T” Series Assembly is used for top runner molds that require two floating plates (“X-1” — runner stripper plate, “X-2” — cavity plate) to remain with the upper or stationary half of the assembly.
Since Cavity Retainer Sets are made up solely of an “A” and “B” plate, the item numbers combine the NOMINAL Size, and the “A” and “B” plate thicknesses. (The absence of the letter A , B , “AX”, or “T” distinguish these numbers from the item numbers of Standard Mold Bases)
For Example: 1215-33-47 is an 11-7/8 × 15” Cavity Retainer Set with “A” plate 33/8 and “B” plate 47/8 thick.
The same principle used for numbering Cavity Retainer Sets is applied to Standard Mold Plates; however, only one plate thickness is required. (Since the item numbers for retainer sets will always indicate two separate plate thicknesses, the distinction between these two items is easily identified)
Clamp Slots facilitate clamping the mold to the platen of the press. D-M-E mold bases offer four slot types (shown below) to ensure the best fit for the requirements of your application.



The Locating Ring aligns the mold base to the stationary platen side of the press and positions the sprue bushing correctly
Clamp Slots facilitate clamping the mold to the platen of the press. DME mold bases offer four slot types to ensure the best fit for the requirements of your application.


The Sprue Bushing provides a seat at the spherical radius for the nozzle of the press. This provides a path for the material from the nozzle to the runner system
Leader Pins and Bushings align both halves of the mold at the parting line. Leader Pin Vents, which allow trapped air to escape from the mold, are designed into all 15-inch-and-wider series molds. When desired, they can be specified on smaller molds.

Assembly screws are used to hold the plates of the upper and lower halves of the mold together. For simplicity, the upper and lower assembly screws are generally placed in similar positions




DME offers a selection of housing types to fit application demands. A onepiece welded housing is available for customers requiring maximum rigidity and robust durability. For maximum flexibility of configuration options, a three-piece housing is also available.
For additional operator safety, DME mold bases include an ejector housing cover, except when a longer length ejector bar is selected. The perforated D-M-E logo helps the operator to visually determine if the ejector plate and ejector retainer plate are in the returned position. The cover is fastened on both sides with 5/16-18 button-head cap screws. Once again, D-M-E is leading the industry into a safer work environment.
Ejector assembly screws are used to hold the plate of the ejector assembly together. Recommended position will be provided but you can specify any different position
Return Pins are used to ensure correct return of the ejector assembly to the home position. DME return pins are precisionground from superior quality hotwork die steel. Stop Pins arrest travel – preventing excessive wear and possible housing damage. The Sprue Puller Pin removes material from the Sprue Bushing at the end of the molding cycle
Saves design and mold making costs for lubrication and fittings. Reduces wear and galling. Lowers maintenance and repair costs. Eliminates contamination... ideal for “clean room” Self-Lubricating environments
DME’s Quick Delivery Standards (QDS) program has expanded to offer even more sizes of mold bases, retainer sets and mold plates on a same-day, next-day, three-day or four-day basis
More than 3,800 popular mold base combinations available in 3 or 4 days or less
Includes comparably sizedretainer sets and mold plates
Includes D-M-E #7 stainless steel in the A-Series mold base program (all plates and housing are stainless steel)
The same-day and next-day shipment programs now offer 340 of the most popular A-Series mold bases in addition to rotary ground mold (RGM) plates of comparable size and thickness
The new selection of three-day shipment A-Series or B-Series mold bases, cavity retainer sets, and finished or rotary ground mold plates now includes nearly 4,000 combinations
The QDS program now includes A-Series mold bases in D-M-E #7 stainless steel available in four-day shipment
With the ever-growing need for just-in-time deliveries, this expansion of the D-M-E QDS program can greatly enhance your competitive edge
A and B Series Mold Bases include: Optional 1-3/8 clamp plates where applicable
Ejector bar same length as mold base Any standard leader pin length desired

A-Series Mold Bases, B-Series Mold Bases, X-Series Mold Bases,
AX-Series Mold Bases T-Series Mold Bases, Cavity Retainer Sets
D-M-E #1, #2 and #3 steel from 7/8" thick to 57/8" thick
D-M-E #7 steel from 7/8" thick to 27/8" thick
Available on all D-M-E Mold Basesand Cavity Retainer Sets
1-piece or 3-piece housing (standard D-M-E rails)
Ejector housing covers, Relocate or omit return pins, Relocate or omit assembly screws (top and/or bottom)
Relocate or omit assembly screws in ejector set, Relocate or omit leader pins and bushings, Relocate or omit center holes
Relocate or omit stop pins in ejector bar, Sprue puller pin of your choice,
Machining for all D-M-E sprue bushings and most clamp slots, Machining for most locating rings


At the request of moldmakers, D-M-E has begun to offer contour roughing, services. D-M-E can rough mill complex part shapes into mold plates, even for milling that requires large and deep cavities.
Moldmakers can use this service to extend their in-house capacity, reduce lead time and focus on other high-value machining
Consistent machining allowance throughout the surface of the cavity block provides even finishing without areas of heavy stock
D-M-E can provide customers with the CAM program to continue the work where D-M-E left off, saving time and programming expense
Contour roughing can be bundled with the option to stress-relieve cavity blocks and a custom mold base
The Contour Roughing Service begins with complex core and cavity CAD files from customers
D-M-E programs 3D cavity roughing tool paths that generate a rough milled surface, allowing machining stock for finishing by the customer
D-M-E uses industry-leading CAM software for programming contour roughing tool paths leaving consistent machining allowance throughout the surface of the cavity block



What is the “Edge” concept? It’s an A-Series Mold Base with seven features in D-M-E #3 steel with a 30-40% price advantage. And with every Edge Mold Base, you get seven decades of reliable D-M-E quality-assured manufacturing capabilities that includes the absolute best service, price and delivery that will have your customers coming back for more.
D-M-E has supported moldmakers, processors and designers around the globe since it innovated the standard mold base in 1942. Today, we offer the industry’s broadest range of market-leading products. In a recent Moldmaking Industry Survey, moldmakers said they needed an edge to better compete. That’s why our full featured, ready-to-ship mold base is called the Edge. Essentially, moldmakers named it for us! The Edge gives you the competitive and profitability advantages that D-M-E customers demand.
As you continue to positively impact your operations through process efficiencies, technology enhancements, and automation improvements, the D-M-E Edge Mold Base is with you every step of the way by providing the value, speed and exceptional quality that customers have long expected from the industry’s standard-setter in mold technologies. Even our competitors look to us as standard-setters; so much so, that today, competitors still promote their products by comparing them to ours
Get the Edge Mold Base and you’ll have another ingredient for the formula for a successful, growing business, and a partnership with the global mold technologies leader
The D-M-E Edge Mold Base is manufactured by D-M-E’s sister company located in Brazil. D-M-E has had an extensive manufacturing and distributing presence in Brazil for over 20 years. The Edge Mold Base is manufactured using the same stringent quality-assured processes and standards that have been adhered to during the manufacture of D-M-E U.S.-made mold bases for many decades. This manufacturing consistency and repeatability on every continent ensures D-M-E customers that every mold base has the quality steel and construction that makes D-M-E mold bases the highest valued mold bases throughout the world.
Yes! With our low U.S. prices, the Edge Mold Base is more than competitive when compared against in-house manufactured bases. In today’s marketplace, most moldmakers don’t have the luxury of having tool makers and/or apprentices make mold bases. Factoring direct labor costs alone, the D-M-E Edge Mold Base is priced so low that even the most efficient shop will save money by purchasing instead of making
Yes! D-M-E has the most comprehensive worldwide product offering for in-house machining services! Whether you need simple pocket roughing, 3D contour roughing of core and cavity blocks, or a completely finished mold base that meets your exact specifications and tolerances, D-M-E is the industry leader for complete, comprehensive special machining both locally and globally. No one in our industry offers a wider range of special machining services, and no one in our industry has the decades of machining experience and steel supplier relationships that provide our competitive advantage
70 different mold base assemblies ready for quick delivery
The lowest-priced mold base on the market
Most sizes available for same-day shipment
Seven popular mold base features Reliable D-M-E quality-assured services, including manufacturing, inspection and distribution
A-Plate, B-Plate and Support plates supplied with D-M-E #3 steel
Pry slots installed on both sides of “B” plate
Lift holes installed
Return pins installed 0.125 inboard to allow for spring pockets
Leader pin vents machined in the housing under the bushing location
Guided ejection installed
Three-piece ejector housingCenter hole machining included
NOTE: See Standard & Optional Mold Base Features section for specifications regarding Edge Mold Base features.