Decarburization Guide: Surface Carbon Loss, Test & Prevention

Decarburization Guide: Surface Carbon Loss, Test & Prevention

Short answer: Decarburization is the loss of surface carbon from steel during heating — softening a thin skin that can fail in fatigue or wear. Controlled atmosphere, lower reheat temperature and short soak time keep the surface chemistry intact; a hardness or microetch test confirms it.

At a Glance

Decarburization Guide: Surface Carbon Loss, Test & Prevention chart
Figure 1 – Decarburization Guide: Surface Carbon Loss, Test & Prevention overview.

Why the Skin Goes Soft

Heating in air or steam strips carbon; it follows Metal Heat Treatment Guide en Annealing Vs Normalizing. Relate to Metal Surface Treatment Guide en Stress Relieving Vs Annealing.

Test & Control

Check with surface hardness and microetch; refine structure via Metal Grain Size Guide and inspect with Metal Ndt Guide. Document per Mill Test Certificate Guide.

QA & Supply

Protect stock via How To Prevent Metal Rust. HXSCO supplies heat-treated stock with controlled decarb.

Get a Quote

Tell HXSCO your requirements and we will respond with a competitive quote and lead time.

Veelgestelde vragen

What is decarburization?

Loss of surface carbon from steel during heating, softening a thin skin.

Why is it bad?

The soft skin lowers fatigue and wear resistance at the surface.

How do you prevent it?

Controlled atmosphere, lower reheat temperature, short soak.

How is it tested?

Surface hardness survey and microetch / microstructural inspection.

Do you control decarb on supply?

HXSCO supplies heat-treated stock with decarburization within spec.

Source Decarb-Controlled Steel from HXSCO

HXSCO supplies heat-treated steel with decarburization controlled to your drawing. Send your grade and quantity for a quote.

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