Chapter 13 - Chapter 13 Heat treatment of steel and cast...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 13 Heat treatment of steel and cast irons are about 90% of metal alloys used are iron based. 1.0 up to 2.11% are carbon-steels 2.11%-4.5% Carbon-Cast-iron 13.1 Designations are classifcations of steels. The ALSI (American Iron and Steel Institure) and SAE (Society of Automotive Engieers) use a designations that’s usually 4 or 5 digit numbers 1020: First two digits indicate the major alloying elements (see table 13.1) The last digits represent carbon content in 100ths of a percent. Ex. .20 carbon. Plain Carbon Steels 10xx Only carbon and manganese lowers DBTT Plain Carbons Steels, Carbon and some Mn, structural applications. Low Allow steels, less than 5% alloying additions. 13.2 Simple heat treatments Process Anneal- heat to below the eutectoid and hold. Get recrystalizations to remove cold work. Annealing- Heat to produce ɣ and slow cool in a furnca. Get course pearlite. Normalizing- Heat to produce and then air cool. Get fine pearlite stronger than annealed. See figure
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

Chapter 13 - Chapter 13 Heat treatment of steel and cast...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online