Malleability - Revision history

Thtet6: Created an interactive simulation, added an exam prep section, upgraded the references

2026-04-16T20:39:14Z

Created an interactive simulation, added an exam prep section, upgraded the references

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 '''by Thae Nandar Htet (Spring 2026)'''
 ==The Main Idea==
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 Below is a Trinket interactive model demonstrating how compressive stress affects a metallic lattice. In this GlowScript simulation, you can observe how an applied force causes the "atoms" to shift along slip planes, simulating malleability on a microscopic scale.
 https://glowscript.org/#/user/thaenandarhtet/folder/MyPrograms/program/trinketlink
 ==References==

Thtet6: Added a GlowScript Simulation: Inserted a new section for an interactive Trinket model and provided the Python code to simulate atomic deformation under compressive stress. Upgraded References: Swapped out the informal links for legitimate, university-level materials science sources (such as MIT OpenCourse and the Callister textbook).

2026-04-16T20:33:48Z

Added a GlowScript Simulation: Inserted a new section for an interactive Trinket model and provided the Python code to simulate atomic deformation under compressive stress. Upgraded References: Swapped out the informal links for legitimate, university-level materials science sources (such as MIT OpenCourse and the Callister textbook).

Show changes

Thtet6 at 20:24, 16 April 2026

2026-04-16T20:24:50Z

← Older revision		Revision as of 16:24, 16 April 2026
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	This page covers one of the intensive properties of matter: Malleability		This page covers one of the intensive properties of matter: Malleability

	'''by ~~Yash Singhal~~ (~~Fall 2025~~)		'''by Thae Nandar Htet (Spring 2026)
	'''		'''
	Previous authors:		Previous authors:
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	Marguerite Murrell		Marguerite Murrell
	Kyle Williams		Kyle Williams
			Yash Singhal

	==The Main Idea==		==The Main Idea==

Yashnotcash: Made flow and clarity changes and added visual aids!

2025-12-01T23:18:07Z

Made flow and clarity changes and added visual aids!

← Older revision		Revision as of 19:18, 1 December 2025
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	This page covers one of the intensive properties of matter: Malleability		This page covers one of the intensive properties of matter: Malleability

	'''by ~~Elizabeth Hermosilla~~ (~~Spring 2024~~)		'''by Yash Singhal (Fall 2025)
	'''		'''
	Previous authors:		Previous authors:
			Elizabeth Hermosilla
	Marguerite Murrell		Marguerite Murrell
	Kyle Williams		Kyle Williams
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	A metal is more likely to break at the grain boundaries (the point where crystal grains meet), so metals with a higher grain boundary count and larger grain boundaries is considered less malleable. The actual deformation of a metal occurs when pressure/stress are put on the object, causing the atoms to roll over one another and permanently settle in a different place.		A metal is more likely to break at the grain boundaries (the point where crystal grains meet), so metals with a higher grain boundary count and larger grain boundaries is considered less malleable. The actual deformation of a metal occurs when pressure/stress are put on the object, causing the atoms to roll over one another and permanently settle in a different place.

	The amount the atoms move is dependent upon two key factors: the temperature and the strength of the metallic bonds. Having weak metallic bonds means that there is less energy required to move the relative positions of the atoms and therefore means the material will have a higher malleability. Likewise, a metal or alloy with a stronger metallic bond needs more energy to change its atom's alignment. Temperature affects the malleability of a material by regulating the crystalline structure of the atoms. In most metals, ~~the heat makes the structure of the~~ atoms more ~~regular which~~ softens the metal ~~and makes it more malleable~~.		The amount the atoms move is dependent upon two key factors: the temperature and the strength of the metallic bonds. Having weak metallic bonds means that there is less energy required to move the relative positions of the atoms and therefore means the material will have a higher malleability. Likewise, a metal or alloy with a stronger metallic bond needs more energy to change its atom's alignment. Temperature affects the malleability of a material by regulating the crystalline structure of the atoms. In most metals, increased temperature provides thermal energy that allows atoms to vibrate and move more easily, allowing dislocations to move past obstacles. This effectively softens the metal.

	===Malleability and Ductility===		===Malleability and Ductility===
	It is important to keep in mind that malleability is not the same as ductility. These two physical properties of metals, although similar, have a few distinct differences. Ductility is the ability of a material to stretch under tensile stress, a force acting away from the object. Malleability, on the other hand, is a metal's ability to deform under compressive stress, a force acting towards the center of the object. The key difference here, is tensile versus compressive stress. Some exceptional materials, such as copper, have both good ductility and good malleability.		It is important to keep in mind that malleability is not the same as ductility. These two physical properties of metals, although similar, have a few distinct differences. Ductility is the ability of a material to stretch under tensile stress, a force acting away from the object. Malleability, on the other hand, is a metal's ability to deform under compressive stress, a force acting towards the center of the object. The key difference here, is tensile versus compressive stress. Some exceptional materials, such as copper, have both good ductility and good malleability.

			[[File:malleability_vs_ductility.gif\|1000px\|center\|thumb\|A visual showing how copper is both malleable, by being hammered, and ductile, by being stretched into wire (Illustration Credit: Yash Singhal)]]

	[[File:Ductileandmalleable.png\|800px\|center\|thumb\|A visual showing how copper is both malleable, by being hammered, and ductile, by being stretched into wire (Illustration Credit: Elizabeth Hermosilla)]]		[[File:Ductileandmalleable.png\|800px\|center\|thumb\|A visual showing how copper is both malleable, by being hammered, and ductile, by being stretched into wire (Illustration Credit: Elizabeth Hermosilla)]]

Ehermosilla3: /* Measuring Malleability */

2024-04-22T09:04:47Z

Measuring Malleability

← Older revision		Revision as of 05:04, 22 April 2024
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	[[File:MalleabilityDuctilityTest.gif]]		[[File:MalleabilityDuctilityTest.gif]]

	Because there is no definitive method or unit for measuring malleability, oftentimes metals are simply compared to each other to create a scale of malleability, as detailed in the ~~Examples~~ section below. However, since malleability is so closely connected with a metal's hardness, material scientists look to hardness tests, such as the Rockwell Test, to predict a metal's malleability. See the section below on the Rockwell Test for additional information.		Because there is no definitive method or unit for measuring malleability, oftentimes metals are simply compared to each other to create a scale of malleability, as detailed in the examples section below. However, since malleability is so closely connected with a metal's hardness, material scientists look to hardness tests, such as the Rockwell Test, to predict a metal's malleability. See the section below on the Rockwell Test for additional information.

	===Measuring Hardness with the Rockwell Test===		===Measuring Hardness with the Rockwell Test===

Ehermosilla3: /* What is Malleability? */

2024-04-22T09:03:08Z

What is Malleability?

← Older revision		Revision as of 05:03, 22 April 2024
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	===What is Malleability?===		===What is Malleability?===
	~~Malleability is one such intensive property of matter.~~ Malleability is the ability for something, generally metals, to be molded or deformed into another shape. Often considered to simply be the ability for a metal to be hammered into thin sheets, malleability is actually a material's ability to deform under pressure of a force pushing on it, in other words, a compressive force. Malleability certainly also has a close relationship with an object's hardness, which is defined as a material's resistance to being indented. Harder objects are considered less malleable.		Malleability is the ability for something, generally metals, to be molded or deformed into another shape. Often considered to simply be the ability for a metal to be hammered into thin sheets, malleability is actually a material's ability to deform under pressure of a force pushing on it, in other words, a compressive force. Malleability certainly also has a close relationship with an object's hardness, which is defined as a material's resistance to being indented. Harder objects are considered less malleable. Metal alloys are normally brittle relative to pure metals.

	[[File:ForceMalleable.jpg\|700px\|center\|thumb\|(Illustration Credit: Elizabeth Hermosilla)]]		[[File:ForceMalleable.jpg\|700px\|center\|thumb\|(Illustration Credit: Elizabeth Hermosilla)]]

Ehermosilla3: /* A Property of Matter */

2024-04-22T09:01:28Z

A Property of Matter

← Older revision		Revision as of 05:01, 22 April 2024
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	===A Property of Matter===		===A Property of Matter===
	Properties of matter can be broken down into two distinct categories: physical and chemical. The physical category can also be broken down in a similar manner, consisting of intensive and extensive properties. A physical property is one that can be determined without changing the identity of the substance, ~~and intensive~~ properties can be determined regardless of the amount of matter of the substance present. Malleability is classified as a property of matter, along with ductility and conductivity.		Properties of matter can be broken down into two distinct categories: physical and chemical. The physical category can also be broken down in a similar manner, consisting of intensive and extensive properties. A physical property is one that can be determined without changing the identity of the substance, as opposed to the process of identifying chemical characteristics which require preforming chemical reactions. Intensive properties can be determined regardless of the amount of matter of the substance present whereas extensive properties, like mass and volume, depend on the amount of the material. Malleability is classified as a property of matter, along with ductility and conductivity.

	===What is Malleability?===		===What is Malleability?===

Ehermosilla3: /* What is Malleability? */

2024-04-22T08:58:44Z

What is Malleability?

← Older revision		Revision as of 04:58, 22 April 2024
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	Malleability is one such intensive property of matter. Malleability is the ability for something, generally metals, to be molded or deformed into another shape. Often considered to simply be the ability for a metal to be hammered into thin sheets, malleability is actually a material's ability to deform under pressure of a force pushing on it, in other words, a compressive force. Malleability certainly also has a close relationship with an object's hardness, which is defined as a material's resistance to being indented. Harder objects are considered less malleable.		Malleability is one such intensive property of matter. Malleability is the ability for something, generally metals, to be molded or deformed into another shape. Often considered to simply be the ability for a metal to be hammered into thin sheets, malleability is actually a material's ability to deform under pressure of a force pushing on it, in other words, a compressive force. Malleability certainly also has a close relationship with an object's hardness, which is defined as a material's resistance to being indented. Harder objects are considered less malleable.

	[[File:ForceMalleable.jpg\|center\|(Illustration Credit: Elizabeth Hermosilla)]]		[[File:ForceMalleable.jpg\|700px\|center\|thumb\|(Illustration Credit: Elizabeth Hermosilla)]]

	===How Does it Work?===		===How Does it Work?===

Ehermosilla3 at 08:58, 22 April 2024

2024-04-22T08:58:10Z

← Older revision		Revision as of 04:58, 22 April 2024
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	Malleability is one such intensive property of matter. Malleability is the ability for something, generally metals, to be molded or deformed into another shape. Often considered to simply be the ability for a metal to be hammered into thin sheets, malleability is actually a material's ability to deform under pressure of a force pushing on it, in other words, a compressive force. Malleability certainly also has a close relationship with an object's hardness, which is defined as a material's resistance to being indented. Harder objects are considered less malleable.		Malleability is one such intensive property of matter. Malleability is the ability for something, generally metals, to be molded or deformed into another shape. Often considered to simply be the ability for a metal to be hammered into thin sheets, malleability is actually a material's ability to deform under pressure of a force pushing on it, in other words, a compressive force. Malleability certainly also has a close relationship with an object's hardness, which is defined as a material's resistance to being indented. Harder objects are considered less malleable.

	[[File:ForceMalleable.jpg\|center]]		[[File:ForceMalleable.jpg\|center\|(Illustration Credit: Elizabeth Hermosilla)]]

	===How Does it Work?===		===How Does it Work?===
	Malleability in metals is due to metallic bonds which are characterized by a mobile "electron sea". The electrons are able to move around and allow the metal atoms to adjust back and forth, past other atoms if a force is applied to them. The atoms in a metal are packed tightly, fitting as many as possible in the metal's respective space/volume, creating layers of atoms side by side, sometimes aligning. Areas where atoms align are called "crystal grains".		Malleability in metals is due to metallic bonds which are characterized by a mobile "electron sea". The electrons are able to move around and allow the metal atoms to adjust back and forth, past other atoms if a force is applied to them. The atoms in a metal are packed tightly, fitting as many as possible in the metal's respective space/volume, creating layers of atoms side by side, sometimes aligning. Areas where atoms align are called "crystal grains".

	[[File:Electronsea.jpg\|940px\|thumb\|center\|A model depicting an electron sea and how force affects the configuration of the positive and negative atoms.]]		[[File:Electronsea.jpg\|940px\|thumb\|center\|A model depicting an electron sea and how force affects the configuration of the positive and negative atoms. (Illustration Credit: Elizabeth Hermosilla)]]
	[[File:GrainBoundary.jpeg.png\|900px\|thumb\|center\|An illustration of multiple layers of atoms side by side converging at grain boundaries.]]		[[File:GrainBoundary.jpeg.png\|900px\|thumb\|center\|An illustration of multiple layers of atoms side by side converging at grain boundaries.(Illustration Credit: Elizabeth Hermosilla)]]

	A metal is more likely to break at the grain boundaries (the point where crystal grains meet), so metals with a higher grain boundary count and larger grain boundaries is considered less malleable. The actual deformation of a metal occurs when pressure/stress are put on the object, causing the atoms to roll over one another and permanently settle in a different place.		A metal is more likely to break at the grain boundaries (the point where crystal grains meet), so metals with a higher grain boundary count and larger grain boundaries is considered less malleable. The actual deformation of a metal occurs when pressure/stress are put on the object, causing the atoms to roll over one another and permanently settle in a different place.
Line 30:		Line 30:
	It is important to keep in mind that malleability is not the same as ductility. These two physical properties of metals, although similar, have a few distinct differences. Ductility is the ability of a material to stretch under tensile stress, a force acting away from the object. Malleability, on the other hand, is a metal's ability to deform under compressive stress, a force acting towards the center of the object. The key difference here, is tensile versus compressive stress. Some exceptional materials, such as copper, have both good ductility and good malleability.		It is important to keep in mind that malleability is not the same as ductility. These two physical properties of metals, although similar, have a few distinct differences. Ductility is the ability of a material to stretch under tensile stress, a force acting away from the object. Malleability, on the other hand, is a metal's ability to deform under compressive stress, a force acting towards the center of the object. The key difference here, is tensile versus compressive stress. Some exceptional materials, such as copper, have both good ductility and good malleability.

	[[File:Ductileandmalleable.png\|800px\|center\|thumb\|A visual showing how copper is both malleable, by being hammered, and ductile, by being stretched into wire]]		[[File:Ductileandmalleable.png\|800px\|center\|thumb\|A visual showing how copper is both malleable, by being hammered, and ductile, by being stretched into wire (Illustration Credit: Elizabeth Hermosilla)]]

	===Measuring Malleability===		===Measuring Malleability===

Ehermosilla3: /* What is Malleability? */

2024-04-22T08:54:59Z

What is Malleability?

← Older revision		Revision as of 04:54, 22 April 2024
Line 15:		Line 15:
	Malleability is one such intensive property of matter. Malleability is the ability for something, generally metals, to be molded or deformed into another shape. Often considered to simply be the ability for a metal to be hammered into thin sheets, malleability is actually a material's ability to deform under pressure of a force pushing on it, in other words, a compressive force. Malleability certainly also has a close relationship with an object's hardness, which is defined as a material's resistance to being indented. Harder objects are considered less malleable.		Malleability is one such intensive property of matter. Malleability is the ability for something, generally metals, to be molded or deformed into another shape. Often considered to simply be the ability for a metal to be hammered into thin sheets, malleability is actually a material's ability to deform under pressure of a force pushing on it, in other words, a compressive force. Malleability certainly also has a close relationship with an object's hardness, which is defined as a material's resistance to being indented. Harder objects are considered less malleable.

	[[File:ForceMalleable.jpg]]		[[File:ForceMalleable.jpg\|center]]

	===How Does it Work?===		===How Does it Work?===