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ISO 683-5:2014 pdf free

ISO 683-5:2014 pdf free.Heat treatable steels, alloy steels and free-cutting steels – Nitriding steels
For the purposes of this document, the terms and definitions of ISO 377, ISO 4885, ISO 4948-1, ISO 4948-2,ISO 6929, ISO 14284 and the following apply.
section for which the specified mechanical properties shall apply
Note 1 to entry: Independent of the actual shape and dimensions of the cross-section of the product, the size of its ruling section is always given by a diameter. This corresponds to the diameter of an “equivalent round bar”. That is a round bar which, at the position of its cross-section specified for taking the test pieces for the mechanical tests, will, when being cooled from austenitizing temperature, show the same cooling rate as the actual ruling section of the product concerned at its position for taking the test pieces.
heat-treatable steel containing controlled amounts of the nitride forming elements, aluminium,chromium, molybdenum, and/or vanadium and are particularly suited for nitriding heat treatment characterized by keeping a steel product for a sufficiently long time at temperatures below the transformation temperature AC1 in a nitrogen providing gaseous or liquid salt environment to achieve diffusion of the nitrogen into the steel surface
Note 1 to entry: Anincrease in surface hardness, wear resistance and fatigue properties is attained with this treatment.
Under suitable shearing conditions (avoiding local stress peaks, preheating, application of blades with a profile adapted to that of the product, etc.), all steels are shearable in the “soft annealed” (+A) condition.
Unless otherwise agreed at the time of enquiry and order, the steel shall show a fine grain structure with an austenitic grain size of 5 and finer, when tested in accordance with ISO 643. For verification see B.2.
The ferrite content in the core of the quenched and tempered product shall be determined on one microsection per cast, dimension and heat treatment batch, if agreed at the time of enquiry and order.ISO 683-5 pdf free download.

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