Answered: 27)Explain the coding system of the…

Welding: Principles and Applications (MindTap Course List)

8th Edition

ISBN:9781305494695

Author:Larry Jeffus

Publisher:Larry Jeffus

Chapter27: Weldability Of Metals

Section: Chapter Questions

Problem 17R: Why must cracks in the martensite layer of high-manganese steels be removed?

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27)Explain the coding system of the material 529551.Specify the clssification of carbon 000 to 199Carbon and carbon-manganese type steels. The number represents hundred times the manganese content 200 to 240Free-cutting steels, the second and third numbers representing hundred times the mean sulphurcontent 300 to 499Stainless and heat resistant valve steels 500 to 999Alloy steels with different groups of numbers within this range being allocated to different alloys Alloys 500 to 519 have nickel as the main alloying element, 520 to 539 have chromium. A Steel is supplied to a chemical composition determined bychemical analysis H The steel is supplied to a hardenability specification M The steel is supplied to mechanical property specifications S The steel is stainless

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