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- M -
The relative ease of machining (cutting or forming) a metal or alloy. May be related to a machineability index under specified standard conditions.
A photographic reproduction of macrostructure.
The structure of polished and etched metals as revealed at a magnification not exceeding ten times.
An adjustable preload fastener for soft core and composite materials.
An instrument for measuring plating thicknesses. The magnetic responses of plated and unplated parts of the same type are compared to determine the plating thickness.
(diameter) - In thread geometry, the diameter of the cylinder that bounds the crests of external threads or the roots of internal threads.
A characteristic of materials which permits a high degree of plastic deformation without rupture.
Maraging Steels -
Special high strength martensitic alloys capable of being precipitation hardened. Examples are Vascomax 250, 300 and 350.
A phase of steel produced by transformation of austenite upon cooling. Martensite is the hardest of the transformation products of austenite and is tempered to desired strength and hardness levels.
Lightweight 95 KSI blind bolt with mechanical locking feature for primary structure. Manufactured by Monogram Aerospace Fastners.
The science dealing with the structure and constitution of metals and alloys.
The science and technology of metals. Infastener manufacture, the concern with the physical and mechanical properties of metals as affected by composition, mechanical working, heat treatment and environment.
Micro Segregation -
Inmetallurgy, segregation within a grain or crystal.
A graphic reproduction of microstructure. If produced photographically, it is called a photomicrograph, not a microphotograph.
The grain structure of metals as exposed when a sectioned specimen is polished and usually etched and viewed at a magnification greater than ten times.
(diameter) - Inthread geometry, the diameter of the cylinder that bounds the crests of internal threads or the roots of external threads.
Lack of concentricity. Used in fastener applications to describe hole patterns which do not exactly match in members to be joined.