Panoramica del prodotto

AISI 1085 High Carbon Steel Balls are economical through-hardened carbon steel balls produced for wear-resistant mechanical applications. With a high carbon content of approximately 0.80-0.93%, this material can be heat treated to achieve high hardness and stable wear performance across the working section of the ball.

Compared with low carbon steel balls, AISI 1085 balls are harder and better suited to higher-wear contact points. Compared with chrome steel bearing balls, they offer a cost-effective choice for semi-precision assemblies where bearing-grade fatigue performance is not the main requirement. They should not be positioned as stainless or corrosion-resistant balls.

Material Selection & Technical Positioning

AISI 1085 belongs to the high carbon steel family. It is selected when buyers need a magnetic steel ball with higher hardness and stronger wear resistance than low carbon steel balls, while still controlling cost for high-volume hardware and industrial mechanisms.

The correct industry terminology includes: AISI 1085 high carbon steel balls, through-hardened carbon steel balls, high carbon steel bearing balls, high carbon steel balls HRC 59-66, and high carbon precision balls. If the working environment is wet, humid, marine, acidic, alkaline, or food-contact, SDBALLS should recommend plated steel balls, stainless steel balls, or other material alternatives according to the application.

Specifiche tecniche

Proprietà	Typical Value / Page Content
Material Grade	AISI 1085 high carbon steel
Ball Diameter	0.5 mm – 50.8 mm
Grado di precisione	G40, G48, G80, G100, G200, G500, G1000
Durezza	Typical HRC 59-66 after heat treatment
Densità	Approx. 7.85 g/cm³
Modulo di Young	Approx. 200 GPa
Resistenza alla trazione	Approx. 700-800 MPa
Magnetismo	SÌ
Wear Resistance	Good to very good for suitable non-corrosive applications
Resistenza alla corrosione	No; anti-rust oil or plating may be required
Densità	Approx. 7.85 g/cm³
Magnetismo	Magnetic
Resistenza alla corrosione	Not corrosion resistant; oiling, plating or stainless alternatives may be considered when rust protection is required
Finitura superficiale	Plain, polished, oiled, or plated upon request

Chemical Composition Reference

Grado	Fe	C %	Si %	Mn %	P max %	S max %
AISI 1085	Balance	0.80-0.93	0,60 massimo	0.70-1.00	0.040	0.050
82B / high carbon wire reference	Balance	0.79-0.86	0.15-0.35	0.60-0.90	0.030	0.030

Note: Composition ranges are reference values. Final specification should follow the agreed material standard, drawing, and purchase order requirements. 82B may be discussed as a high-carbon wire reference when relevant, but final material confirmation should be project-specific.

International Grade Equivalents

System	Common Reference	Buyer Note
AISI / SAE	1085	Main product grade for this page
DIN / EN	C85 / CK85	Common high-carbon steel reference; confirm exact standard and heat treatment condition
W-Nr.	1.1269	Reference equivalent often used in European material discussions
NF	XC85	Reference equivalent; final composition must be confirmed
JIS	SUP3	Common Japanese reference in some steel ball supplier catalogs

Heat Treatment, Hardness & Performance

AISI 1085 high carbon steel balls are through hardened after heat treatment. This means the ball is designed for more uniform hardness behavior than case-hardened low carbon steel balls, which have a hardened outer layer and a lower-carbon core.

The typical hardness range is HRC 59-66. This high hardness supports improved wear resistance in repeated-contact applications such as semi-precision bearings, sliding rails, castors, conveyors, locks, polishing systems and milling machines. For applications requiring strict fatigue life, high speed, or bearing-grade performance, AISI 52100 chrome steel balls should be evaluated.

Applications & Application Fit

AISI 1085 through-hardened high carbon steel balls are widely used where high hardness, wear resistance, and cost control are more important than corrosion resistance. They are suitable for semi-precision industrial hardware and mechanical assemblies operating in controlled or lubricated environments.

Applicazione	Fit Level	Why It Fits	Buyer Note
Semi-precision bearings	Very good	Through-hardened HRC 59-66 supports rolling contact and wear resistance	Use chrome steel balls for higher speed or fatigue-critical bearing applications
Furniture bearings / drawer rails	Very good	Cost-effective hardness and smooth rolling for repeated sliding motion	Confirm grade, noise and smoothness requirement
Bicycle components / skates	Bene	Higher hardness than low carbon steel balls for wear-prone rolling parts	Confirm load, lubrication and corrosion exposure
Castors / roller conveyors	Bene	Suitable for repeated rolling contact in non-corrosive environments	Confirm load, speed, lubrication and working environment
Locks / detent mechanisms	Bene	Magnetic steel and hard surface support common hardware use	Confirm size tolerance, hardness and surface finish
Polishing / milling machines	Application-dependent	High hardness and wear resistance may be useful in certain processing systems	Confirm contamination, media wear, and rust control requirements
Outdoor / wet / corrosive environment	Limited	High carbon steel is not corrosion resistant	Consider plating, stainless steel, or other corrosion-resistant alternatives

Material Selection Guide

Material Option	Typical Strength	Limitation	When to Recommend
AISI 1085 high carbon steel balls	Through hardened, high hardness, strong wear resistance, cost-effective	Not corrosion resistant; not equal to bearing-grade chrome steel for high-speed fatigue-critical use	Semi-precision bearings, furniture bearings, rails, castors, conveyors, locks, polishing and milling machines
AISI 1010/1015 low carbon steel balls	Economical, case-hardened surface, tougher low-carbon core	Lower through hardness and wear resistance than AISI 1085	Drawer slides, castors, locks, conveyors, lower-load hardware
AISI 52100 chrome steel balls	High precision, high hardness, strong bearing performance	Higher cost; may be over-specified for simple hardware	Bearings, motors, precision rolling assemblies, high-speed applications
Stainless steel balls	Corrosion resistance and clean appearance	Higher cost; hardness depends on stainless grade	Wet, food-contact, chemical, marine or hygiene-sensitive applications
Plated carbon steel balls	Improved surface appearance and rust protection	Plating thickness and final diameter tolerance must be controlled	Projects requiring decorative finish or moderate corrosion protection

Manufacturing & Process Control

SDBALLS controls AISI 1085 high carbon steel ball production through raw material selection, wire drawing, cold heading, flashing, heat treatment, grinding or lapping when required, polishing, cleaning, rust-preventive oiling, inspection and packing.

For grade-sensitive or OEM projects, process control should focus on material verification, heat treatment stability, hardness consistency, diameter tolerance, roundness, surface condition, rust prevention, and batch traceability.

Quality Control & Inspection

Typical inspection items include diameter, precision grade, roundness, surface appearance, hardness, material confirmation, magnetic response, rust-preventive condition and packing condition. For higher-volume or OEM programs, SDBALLS can discuss sample approval, inspection reports, PPAP-style documentation, third-party testing, RoHS requests and customized labeling.

Packing Options

AISI 1085 high carbon steel balls can be packed according to order quantity, ball size, surface condition, and export handling requirements. Common options include bulk bags, cartons, plastic pails, steel drums, palletized packing, inner anti-rust protection, customized labels, and OEM packing for distributors or assembly customers.

How to Specify for Quotation

To quote accurately, please confirm: material grade, diameter in mm or inch, precision grade, hardness requirement, surface finish, anti-rust or plating requirement, quantity, packing method, target application, inspection document requirement, destination port, and trade term.

For replacement projects, buyers are encouraged to provide drawings, current supplier specification sheets, photos, samples, hardness requirements, grade requirements and working environment details.

Technical FAQ

Q: What is the difference between AISI 1085 and AISI 1010/1015 carbon steel balls?

A: AISI 1085 is a high carbon steel ball that is typically through hardened and offers higher hardness and wear resistance. AISI 1010/1015 low carbon steel balls are usually case hardened, with a hard outer layer and a tougher low-carbon core. The best choice depends on load, speed, cost, and application environment.

Q: Are AISI 1085 high carbon steel balls through hardened?

A: Yes. This page is for through-hardened AISI 1085 high carbon steel balls. Typical hardness is HRC 59-66 after heat treatment.

Q: Are AISI 1085 balls corrosion resistant?

A: No. AISI 1085 high carbon steel is not corrosion resistant. For rust-sensitive applications, buyers should consider anti-rust oil, zinc/nickel/chrome plating, or stainless steel alternatives such as AISI 304, 316, 420C or 440C depending on the environment.

Q: What grades are available?

A: Common grades include G40, G48, G80, G100, G200, G500 and G1000. The most suitable grade depends on required smoothness, load, motion type, tolerance requirement and target cost.

Q: What hardness can SDBALLS supply?

A: The typical hardness range is HRC 59-66. If a narrower hardness range or special heat treatment requirement is critical, please confirm it before quotation and sample approval.

Q: Can AISI 1085 high carbon steel balls be plated?

A: Yes. Depending on the project, they can be supplied plain, polished, oiled, zinc plated, nickel plated, chrome plated, copper plated or with other surface treatments. Plating thickness and final diameter tolerance should be confirmed before production.

Q: Can AISI 1085 balls replace chrome steel balls?

A: Only in suitable applications. AISI 1085 balls are cost-effective for semi-precision and high-wear hardware applications. For high-speed, high-fatigue or precision bearing applications, AISI 52100 chrome steel balls are usually more appropriate.

Q: What information is needed for a quotation?

A: Please provide material grade, diameter, precision grade, hardness, surface finish, quantity, packing, application, inspection document requirement, destination and trade term. Drawings or samples are helpful for replacement projects.