Definition
SCM440 is a JIS alloy steel family used in applications that need strength, toughness, and controlled heat treatment.
Knowledge base
SCM440 sprocket steel
SCM440 is a chromium-molybdenum alloy steel used for tough, heat-treatable parts. For sprockets, it is chosen when wear resistance and impact tolerance matter.
Practical use
It fits hard-use sprocket programs where a buyer wants a durable steel option for street, off-road, or fleet use.
Material notes
Finished performance depends on heat treatment, tooth profile, finish, and inspection, not the steel name alone.
Common mistakes
- Assuming every alloy steel behaves the same after machining.
- Ignoring hardness targets and surface finish after heat treatment.
- Using the raw material name as a substitute for finished-part specification.
When to contact Langbiang Gravity
Contact the team when you need to compare steel options, define a wear target, or prepare a batch spec for dealer or OEM supply.
Continue the technical path
Related technical pages
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Read the CNC manufacturing overview
Follow the path from sprocket geometry and material selection to inspection.