Carbon Steel Balls

Case-hardened carbon steel balls are manufactured from low carbon steel and heat treated to obtain a hardened outer layer with a tough inner core. They are widely used in industrial applications requiring economical wear resistance and good impact performance.

Case-Hardened Surface
Tough Inner Core
Economical Solution
General Industrial Use
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Detailed Description

Also known as carburized carbon steel balls, low carbon steel balls combine surface hardness with core toughness for general mechanical applications.



Carbon Steel Balls

Case-hardened carbon steel balls are manufactured from low carbon steel and typically processed through carburizing and heat treatment to create a hardened surface layer.

Compared with through-hardened high carbon steel balls, case-hardened carbon steel balls offer better impact resistance and a more economical solution for medium-duty industrial applications.

General Mechanical PartsCost-Effective SolutionSurface-Hardened Applications
Technical Specifications
ItemSpecification
MaterialLow Carbon Steel
International DesignationsAISI 1010 / 1015, Q195 / Q235, SWRCH22A
Heat TreatmentCase-hardened / Carburized
Surface HardnessTypically 58–65 HRC
Core ConditionTough low carbon steel core
Size Range0.5 mm – 50 mm
GradeG40 – G1000
Density7.85 g/cm³
StandardISO 3290
Corrosion ResistanceLow (oil protection recommended)
PackingCarton / Steel drum / Bulk bag / Custom
ConditionHardened, cleaned and oiled
Delivery TimeStock available for standard sizes or 30–35 days for production
Chemical Composition
Material TypeC (%)Mn (%)P (%)S (%)
Low Carbon Steel0.08–0.180.30–0.60≤0.040≤0.050

Typical chemical composition range for low carbon steel materials used in case-hardened steel balls. Actual material may vary depending on international standards and application requirements.

FAQ
What is the difference between case-hardened and through-hardened steel balls?
Case-hardened steel balls have a hardened outer surface with a tougher inner core, while through-hardened steel balls are hardened throughout the entire cross-section.
Why use low carbon steel balls?
They provide an economical balance of surface hardness, toughness and impact resistance for general industrial applications.
Are case-hardened carbon steel balls corrosion resistant?
No. Carbon steel balls have low corrosion resistance and are usually supplied with oil protection to reduce rust risk during storage and transportation.
What is the advantage of a tough inner core?
The softer core improves impact resistance and helps reduce brittle fracture under shock loading.
Can these balls be used in bearing applications?
They can be used in low-precision or general mechanical bearing applications where cost is more important than high precision or corrosion resistance.
Can you provide custom sizes or specifications?
Yes, custom sizes, heat treatment conditions and packaging are available depending on requirements.
Can you provide samples for testing?
Yes, standard sizes are usually available for testing and evaluation.
Do you provide inspection reports or certificates?
Yes, inspection reports and material certificates are available upon request.
What packaging options do you offer?
Cartons, steel drums, bulk bags and customized packaging are available according to customer requirements.
Why Choose Huari Steel Ball?
Factory Direct Value
Factory Direct Value
As a manufacturer since 1986 with an annual capacity of 3,600 tons, we eliminate middlemen, offering you competitive factory-direct pricing and stable lead times.
1
Engineering Expertise
Engineering Expertise
Our team doesn't just sell parts; we provide solutions. We offer CAD/STEP drawing support and technical consultation to help you select the exact clearance (C0/C3) and grease type for your application.
2
Customization Flexibility
Customization Flexibility
Unlike rigid distributors, we support custom modifications, including special internal clearances, non-standard dimensions, and private labeling (OEM).
3
Certifications & Quality

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