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Bendalloy (Feruchemy).svg
Power Speed up time
Type External, Pushing, Temporal
Misting Slider
Power Store nutrition and calories
Type Hybrid
Ferring Subsumer
Power Steal Spiritual Feruchemical powers
Type Temporal
World Scadrial
Universe Cosmere
Featured in Mistborn (series)
This page or section contains spoilers for The Lost Metal!
This information has the ability to potentially ruin elements of the plot for the reader. Proceed with caution if you have not read this book.
This page or section needs to be updated with new information for The Lost Metal!
Be aware that in its current state, it may not include all additional content yet.

Bendalloy is the External Temporal Pushing metal. An Allomancer burning bendalloy is able to squeeze time in a bubble around them, making it pass more quickly. Feruchemists can use bendalloy to store nutritional energy, and when used as a Hemalurgic spike, bendalloy steals Spiritual Feruchemical powers. It is an alloy of cadmium and bismuth.[1]

Bendalloy is expensive, with one nugget costing around five hundred notes.[2]

Allomantic Use[edit]

A bendalloy Misting is known as a Slider. Burning bendalloy pushes on time around the user, causing time to pass more quickly in a bubble around them. Events outside the bubble appear to move much slower to someone inside.[3]

When a bendalloy bubble and a cadmium bubble occur in the same place, their effects cancel out resulting in no change whilst still burning the metals used.[4][2] The time bubble created by a Slider is approximately five to fifteen feet across and is smaller than that possible while burning cadmium.[5] Careful examination may reveal the edge of the bubble, where air appears to shimmer. As long as some part of a person is inside the speed bubble, they will be included in its effect.[5]

When a time bubble is created, the area of the bubble stays stationary with respect to a moving object as long as the Slider creating it is stationed on an object large enough. For example, someone standing on a planet, which is quite massive, is still actually moving with the rotation of the planet, and the bubble moves with that person, but the bubble itself stays in the same place with respect to the planet. However, if the Slider who created a time bubble is on a small, moving object (or the person merely walks to the edge of the bubble), the Slider will be transported through the bubble, "popping" it.[6] Objects entering or exiting the bubble are thrown wildly off-course, most likely because different parts of the object are moving at different speeds during the transition.[4] When leaving the bubble, time bubbles interfere with almost all forms of Investiture.[7] However, they do not interfere with emotional allomancy.[8] When multiple bubbles occur in the same space their effects are multiplied, as it speeds up the already sped up time.[9][10]

The amount of Investiture required is proportional to the size of the bubble and the factor of compression.[11][12]

If a Slider flares bendalloy when forming a time bubble, time inside the bubble is sped up to a great degree, likely related to a larger amount of Investiture being used at one time, therefore leading to an increase in the compression factor.[11][12] The size and speed of the bubble is pretty much determined when it's first formed,[13] except more skilled users can actively change the size and shape, and reduce the interval between the creation of new bubbles.[14][15] When one ingests a very large amount of bendalloy and burns duralumin, time is sped up by an extreme degree, and the bubble appears to solidify like crystal, and cracks as it fades. Light appears to act strangely outside of the bubble.[15]

Bendalloy is involved in multiple ways with faster-than-light travel.[16]

A speed bubble can be popped by aluminum.[17]


If someone were able to burn the amount of bendalloy needed to become an Allomantic savant with the metal, they would be able to anchor the speed bubble to themselves, allowing the speed bubble to move with them. This would cause complications for objects moving in and out of the bubble as energy is transferred to and from the Spiritual Realm to prevent redshift and blueshift.[18] They would also be able to influence the size of the bubble and the amount of time it gives.[19]

Feruchemical Use[edit]

A bendalloy Ferring is known as a Subsumer. Bendalloy is used to store nutrition and calories. While filling a bendalloymind, a Subsumer is able to eat large quantities of food without becoming full. Tapping such a metalmind will allow the user to go without food. A separate bendalloymind can be used to store fluid intake.[3]


A bendalloy Compounder would be able to use bendalloy to survive without food or water.[20][3]

Hemalurgic Use[edit]

When used as a Hemalurgic spike, bendalloy steals Spiritual Feruchemical powers (chromium, nicrosil, aluminum, and duralumin).[21]


During the Final Empire, cadmium and bendalloy were inaccessible and unknown to Allomancers, though they were possibly known to the Lord Ruler.[22] The fact that their technology couldn't create the metals made Mistings of these types impossible to discover. After the Catacendre, advancement in technology eventually made the metals available.


  • In an original mockup of the complete Table of Allomantic Metals, this metal was named cerrobend. However, the word cerrobend was a trademarked, commercial name for the metal, and so Brandon was forced to use bendalloy instead.[citation needed]
  • The original plans for bendalloy and cadmium involved blueshifting and redshifting or blueshifting of light passing through the bubble. But this was dropped as it would have lead to people outside being microwaved and blasted with radiation.[23][24] This was solved through the transfer of energy between the Physical and Spiritual Realms.[18]
  • The real world alloy for Bendalloy is 50% bismuth, 26.7% lead, 13.3% tin, and 10% cadmium. This is supported in-world by it being called an alloy of bismuth and cadmium.[1]


  1. a b The Alloy of Law chapter 10#
  2. a b The Alloy of Law chapter 12#
  3. a b c The Alloy of Law Ars Arcanum#
  4. a b The Alloy of Law chapter 2#
  5. a b The Lost Metal chapter 49#
  6. The Bands of Mourning chapter 17#
  7. Firefight Chicago signing
    Arcanum - 2015-02-20#
  8. Holiday signing
    Arcanum - 2015-12-12#
  9. The Lost Metal chapter 23#
  10. Alloy of Law release party
    Arcanum - 2011-11-07#
  11. a b Dragonsteel 2022
    Arcanum - 2022-11-14#
  12. a b YouTube Spoiler Stream 5
    Arcanum - 2022-12-02#
  13. Firefight Chicago signing
    Arcanum - 2015-02-20#
  14. The Lost Metal chapter 8#
  15. a b The Lost Metal chapter 71#
  16. Skyward Seattle signing
    Arcanum - 2018-11-10#
  17. Shadows of Self San Francisco signing
    Arcanum - 2015-10-09#
  18. a b Arcanum Unbounded San Francisco signing
    Arcanum - 2016-11-30#
  19. Skyward San Francisco signing
    Arcanum - 2018-11-08#
  20. The Alloy of Law chapter 11#
  21. Hemalurgy Table
  22. Alloy of Law 17th Shard Q&A
    Arcanum - 2011-11-05#
  23. Firefight Chicago signing
    Arcanum - 2015-02-20#
  24. Miscellaneous 2010
    Arcanum - 2010-12-07#
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