Skip to main content

TECHKNOW

Resize
Dock/Undock
NEW FAQ ADDED
X

Material Info

ISO

P

Material Group - Tool Alloy Steel

Alloy steel contains mostly Iron but also have a variety of elements, other than carbon. These elements are deliberately added, in total amounts between 1.0% and 50% by weight to improve its mechanical properties.
Common alloyants include manganese (the most common one), nickel, chromium, molybdenum, vanadium, silicon, and boron

The common Improved properties in alloy steels:
strength, hardness, toughness, wear resistance, corrosion resistance hardenability, and hot hardness.
To achieve some of these improved properties the metal may require heat treating.



Material Group - Stainless steel – Ferritic and Martensitic

Stainless Steel is a steel alloy with a minimum of 10.5%[1] chromium content by mass.
Stainless steel is used where both the properties of steel and corrosion resistance are required and it differs from carbon steel by the amount of chromium present. Unprotected carbon steel rusts readily when exposed to air and moisture.

There are different types of ISO P stainless steels:
Significant quantities of manganese have been used in many stainless steel compositions. Manganese preserves an austenitic structure in the steel, similar to nickel, but at a lower cost.

Stainless steels ISO P materials are also classified by their crystalline structure:
• Ferritic stainless steels generally have better engineering properties than austenitic grades, but have reduced corrosion resistance,
   because of the lower chromium and nickel content. They are also usually less expensive.
• Martensitic stainless steels are not as corrosion-resistant as the other two classes but are extremely strong and tough,
   as well as highly machinable, and can be hardened by heat treatment. It is quenched and magnetic.

ISO

S

Material Group - Titanium and Ti alloys


Titanium based alloys:
Due to their high strength to weight ratio and excellent corrosion resistance, Titanium alloys parts are ideally suited for advanced aerospace systems. Titanium based alloys which contain 86-99.5% Ti and 5-8% Al, are immune to almost every medium to which they would be exposed in an aerospace environment.
Today, Titanium is used extensively in commercial and military applications and to some extent in space. The primary areas of application for aircrafts are landing gear, landing-gear support structures, wing structures, vertical wing-actuation structures, engines, floor beams and seat-track architecture.
Very large usages of titanium can be found in jet engines, where titanium alloys parts make up to 25-30% of the weight, primarily in the compressor. The high efficiency of these engines is received through the use of titanium alloy components like fan blades, compressor blades, rotors, discs, hubs and other non-rotor parts like inlet guide vanes. Despite its higher cost relative to competing materials, primarily aluminum alloys and steels, the demand for titanium is projected to grow by at least 40-50% over the next few years. Titanium’s superior properties and light weight allow aeronautical engineers to design planes that can fly higher and faster with high resistance to extreme environmental conditions.

Machining Challenges:
Titanium, has historically been perceived as a material which is difficult to machine.
The machining difficulties are the result of the physical, chemical and mechanical properties of the metal.
The material’s relatively high temperature resistance along with its low thermal conductivity does not allow generated heat to dissipate from the cutting tool. This causes excessive tool deformation and wear. Titanium alloys retain their strength at high temperatures causing relatively high plastic deformation of the cutting tool resulting in depth of cut notches. During machining, the high chemical reactivity of titanium alloys causes the welding of the chips to the cutting tool leading to Built-up cutting edges and chip breakage problems. Over the past few years, ISCAR has invested a lot in R&D in order to investigate the machining of Titanium alloys. Our special improved cutting tools along with our unique grades have places ISCAR as a leading company in the area of machining titanium.
In addition to our standard pressure cooling solutions, the growing demands for high pressure machining solutions especially in the aerospace market, has led ISCAR to develop unique product lines suitable for high pressure cooling systems.
When machining Titanium alloys with standard pressure coolant, the recommended cutting speed is 60-70 m/min. The use of high pressure cooling system enables to increase the cutting speeds by 100-150% and significantly increase the productivity.
{plugin}name=extra|id=8{/plugin}