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SURFACE FINISHING

Black Oxide

A dark surface treatment for suitable ferrous materials.

Dark conversion finish

Specify the result you need.

Discuss the required protective treatment and service environment. Confirm appearance and inspection requirements with the material and process route.

Discuss this finish
Black Oxide material reference

Material families to review

Alloy Steel

4140, 4340, 42CrMo4. Loaded shafts, tooling and adapters.

Compatibility depends on the specific grade, geometry and treatment specification. Final selection is reviewed with the project.

A finish belongs
in the drawing, too.

Identify visible surfaces, masking areas, contact points and fits. State whether your dimensional requirements apply to the finished part.

Read the finish checklist

Surface finish comparison

Select a process specification and acceptance reference; appearance illustrations do not establish coating thickness, corrosion performance or conformity.

Surface finish comparison
FinishMaterial families to reviewRequirement to specifyFeatures to review
Black OxideCarbon Steel, Alloy SteelDark conversion finishDiscuss the required protective treatment and service environment. Confirm appearance and inspection requirements with the material and process route.

LET’S MAKE IT TANGIBLE

What are you working on?

Bring a drawing. Bring a sketch. Start the conversation.