Asked by: Nasr Cocks
asked in category: General Last Updated: 8th May, 2020

Which ASTM standard governs the Jominy end quench test?

The depth of hardening of a steel after a specific heating process is known as hardenability; it's also inversely related to the weldability of a metal. G2MT Labs offers hardenability testing of steels via the ASTM A255 standard; this test is more commonly known as the Jominy End Quench test.

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In this manner, what is the Jominy end quench test?

Jominy End Quench Test. The Jominy End Quench Test ASTM A 255 measures Hardenability of steels. Hardenability is a measure of the capacity of a steel to be hardened in depth when quenched from its austenitizing temperature. Hardenability of a steel should not be confused with the hardness of a steel.

One may also ask, what is meant by the term jominy distance? The Jominy distance is defined as the distance from the end to the portion in which the martensite fraction is 50%, which conventionally corresponds to the inflection point of the curve. The Jominy distance measured by this way is listed in the first column of Table 9. Figure 25. Measured hardness profile.

Consequently, what is the maximum time allowed between removal of the specimen from the furnace and the start of the quench?

The time between removal of the specimen from the furnace and the beginning of the quench should not be more than 5 s. Direct the stream of water, at a temperature of 40 to 85°F (5 to 30°C), against the bottom face of the specimen for not less than 10 min.

How is Hardenability calculated?

The hardenability of a ferrous alloy is measured by a Jominy test: a round metal bar of standard size (indicated in the top image) is transformed to 100% austenite through heat treatment, and is then quenched on one end with room-temperature water.

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