CNC Machining- Plastic machining-EDM-Diamond Tool

Micrometer

Below are some of the materials & their attributes (not a complete list) that we work with. Our experience may be able to help you with your engineering decisions.

Plastic

DELRIN®: Acetal (the generic name for a family of products) provides high strength and stiffness along with increased dimensional stability and ease of machining. Low moisture absorption, low coefficient of friction as well as good wear properties make DELRIN® resin ideally suited for close tolerance mechanical parts. Lubricated and glass filled grades are available to enhance DELRIN® resin's already excellent mechanical and thermal properties. DELRIN® resin is commonly used for gears, rollers, electrical components.

ULTEM: Ultem 1000 is an amorphous polymer offering high strength and excellent flame and heat resistance. It performs continuously to 340 F ( 170 C ), making it ideal for high strength/ high heat applications.Ultem 1000 has one of the lowest thermal conductivity ratings and highest dielectric properties of thermoplastic materials. It is hydrolysis resistant, highly resistant to acidic solutions and capable of withstanding repeated autoclaving cycles. Ultem 2300 is a 30% glass reinforced version of Ultem 1000, which provides even greater rigidity and improved dimensional stability. Ultem is commonly used for reusable medical devices, analytical instrumentation, electrical insulators, semiconductor process components, underwater connector bodies, and a variety of structural components requiring high strength and rigidity at elevated temperatures.

PEEK: Polyetheretherketones (PEEK), also referred to as polyketones, are obtained from aromatic dihalides and bisphenolate salts by nucleophilic substitution.
PEEK is partially crystalline, and has a glass transition temperature of 143 ƒC and a melting temperature of 334 ƒC. The material is resistant to both organic and aqueous environments, and is used in bearings, piston parts, pumps, compressor plate valves, and cable insulation applications.
PEEK is a thermoplastic with extraordinary mechanical properties. The Young's Modulus is 3.6 GPa and its tensile strength 170 MPa. PEEK is also considered an advanced biomaterial used in medical implants.

Stainless Steel

TYPE 304 - The most commonly specified austenitic (chromium-nickel stainless class) stainless steel, accounting for more than half of the stainless steel produced in the world. This grade withstands ordinary corrosion in architecture, is durable in typical food processing environments, and resists most chemicals. Type 304 is available in virtually all product forms and finishes.

TYPE 316 - Austenitic (chromium-nickel stainless class) stainless steel containing 2%-3% molybdenum (whereas 304 has none). The inclusion of molybdenum gives 316 greater resistance to various forms of deterioration.

TYPE 409 - Ferritic (plain chromium stainless category) stainless steel suitable for high temperatures. This grade has the lowest chromium content of all stainless steels and thus is the least expensive.

TYPE 410 - The most widely used martensitic (plain chromium stainless class with exceptional strength) stainless steel, featuring the high level of strength conferred by the martensitics. It is a low-cost, heat-treatable grade suitable for non-severe corrosion applications.

TYPE 430 - The most widely used ferritic (plain chromium stainless category) stainless steel, offering general-purpose corrosion resistance, often in decorative applications.

Precipitation hardening stainless steels are chromium-nickel alloys. Precipitation-hardening stainless steels may be either austenitic or martensitic in the annealed condition. In most cases, precipitation hardening stainless steels attain high strength by precipitation hardening of the martensitic structure.

Selecting a Stainless Steel

There are a large number of stainless steels produced. Corrosion resistance, physical properties, and mechanical properties are generally among the properties considered when selecting stainless steel for an application. A more detailed list of selection criteria is listed below:

Corrosion resistance is commonly the most significant characteristic of a stainless steel, but can also be the most difficult to assess for a specific application. General corrosion resistance is comparatively easy to determine, but real environments are usually more complex. An evaluation of other pertinent variables such as fluid velocity, stagnation, turbulence, galvanic couples, welds, crevices, deposits, impurities, variation in temperature, and variation from planned operating chemistry among others issues need to be factored in to selecting the proper stainless steel for a specific environment.

Aluminum
Aluminium is a soft, lightweight metal with normally a dull silvery appearance caused by a thin layer of oxidation that forms quickly when the metal is exposed to air. Aluminium oxide has a higher melting point than pure aluminium. Aluminium is nontoxic (as the metal), nonmagnetic, and nonsparking. It has a tensile strength of about 49 megapascals (MPa) in a pure state and 400 MPa as an alloy. Aluminium is about one-third as dense as steel or copper; it is malleable, ductile, and easily machined and cast. It has excellent corrosion resistance and durability because of the protective oxide layer. Aluminium mirror finish has the highest reflectance of any metal in the 200-400 nm (UV) and the 3000-10000 nm (far IR) regions, while in the 400-700 nm visible range it is slightly outdone by silver and in the 700-3000 (near IR) by silver, gold, and copper. It is the second-most malleable metal (after gold) and the sixth-most ductile. Aluminium is a good heat conductor
Titanium

Because of its high tensile strength (even at high temperatures), light weight, extraordinary corrosion resistance, and ability to withstand extreme temperatures, titanium alloys are used in aircraft, armour plating, naval ships, spacecraft, and missiles. It is used in steel alloys to reduce grain size and as a deoxidizer, and in stainless steel to reduce carbon content. Titanium is often alloyed with aluminium (to refine grain size), vanadium, copper (to harden), iron, manganese, molybdenum, and with other metals.
Welded titanium pipe is used in the chemical industry for its corrosion resistance and is seeing growing use in petroleum drilling, especially offshore, for its strength, light weight, and corrosion resistance.

Diamond Tool also machines various other brass and steel alloys. Contact us for more information.

Diamond Tool Inc. 33220 Lakeland Blvd. Eastlake, Ohio 44095 Ph: 216 481-0808 Fax: 216 481-6081

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