English
You are here: Home » Products » Stainless Steel Ball » 420 Stainless Steel Ball

420/420C Stainless Ball

Stainless Steel Ball(420,420C) is a type of ball made from stainless steel
420stainless steel balls

420/420C Stainless Steel Ball

short cycle press machnie
420/420C stainless steel balls are high-performance precision steel balls with strong wear resistance and good rust resistance. They are widely used in precision bearings, valves, sprayers, medical equipment, aerospace and other fields.

420/420C STAINLESS BALL SPECIFICATIONS

Internation Standards and Material Codes

GB/T ASTM EN AFNOR GOST
420 AISI420 1.4034 Z34C14 40kh13

Chemical Composition

  Code C Si Mn P S Cr Ni
420 3Cr13 0.28–0.36% ≤0.8% ≤1.0% ≤0.04% ≤0.03% 12.0–14.0%  
420C 4Cr13 0.40–0.45% ≤1.0% ≤1.0% ≤0.04% ≤0.03% 12.0–14.0% ≤1.0%
5Cr13 0.46% ≤1.0% ≤1.0% ≤0.04% ≤0.03% 13%  

420/420C Stainless Steel Ball Physical Properties

Item Parameters
Tensile strength 280,000 psi
Yield strength 270,000 psi
Elastic modulus 29,000,000 psi
Density 0.275 lbs/cubic inch

Grade: G10 to G1000

  Ball diameter variation Spherical deviation Surface roughness Diameter variation Diameter tolerance
Gade Vdws △Sph Ra Vdwl Tdn
Not Over
μm
10 0.25 0.25 0.02 0.5 *
16 0.4 0.4 0.032 0.8 *
20 0.5 0.5 0.04 1 *
24 0.6 0.6 0.05 1.2 *
28 0.7 0.7 0.06 1.4 *
40 1 1 0.08 2 *
60 1.5 1.5 1 3 *
100 2.5 2.5 0.1 5 ±12.5
200 5 5 0.15 10 ±25
500 12.5 12.5 * 25 ±50
1000 25 25 * 50 ±125

How to Build 420/420C Stainless Steel Balls

line
Cold Heading

Cold Heading

short cycle press machnie

The cold heading uses equipment. The purpose is to be able to punch the steel wire out of the qualified ball blank. After the steel ball is cold heading, the next processing process is carried out.

Screening

short cycle hot press line

Screening, the balls after the hard grinding is initially screened through the screening machine, and the unqualified ball will be eliminated.

Screening
Polish steel balls

Polish Steel Balls

short cycle press machnie

Polishing ball process is to initially polish the ball blank into a circle. It's a very important process.

Soft Grinding

short cycle hot press line

The machine M360 is ued for soft grinding.

Soft Grinding
Heat treatment

Heat Treatment

short cycle press machnie

The heat treatment of the shaft steel ball is to raise the temperature in the furnace to 1000-1050 ℃, the heat preservation time is 30-60 minutes, and the tempering furnace to 145-155 ℃,the heat preservation time is 40-90 minutes.During the heat treatment process, the hardness, vulcanization, Metallographic structure and crushing load are clearly defined.

Oil Removal

short cycle hot press line

Oil removal equipment, put the ball into the equipment, after screening, separate the ball from the oil.

Oil Removal
Hard Grinding

Hard Grinding

short cycle press machnie

Hard grinding is the method of grinding the ball after heat treatment with grinding wheel in the grinding machine. Its role is to further improve the accuracy and surface quality.

Measuring Instrumentation

short cycle hot press line

After the hard grinding, the steel ball will be measured in accuracy, hardness, etc., and the three-needle measuring instrument will be used to check whether the expected effect is achieved.

420 statinless steel ball
Cleaning

Cleaning

short cycle press machnie

After screening, the steel ball is cleaned again and then dried.

Sorting

short cycle hot press line

After cleaning, the steel ball will be qualified into the container through the sorting machine, and finally manually test to complete the whole process of steel ball production.

Sorting
Contact Our Team

NOT SURE WHICH 420/420C STAINLESS BALL RIGHT FOR YOU?

Features of  420/420C Stainless Steel Balls

line
crop_1757426095861

  420/420C stainless steel balls offer high hardness (HRC50-55) and excellent wear resistance, making them suitable for high-stress environments such as bearings and valves..

  They offer moderate corrosion resistance against fresh water, steam, and mild acids, making them suitable for food processing and cosmetics equipment..

  High mechanical strength ensures stability under cyclic loads and reduces deformation..

 High-quality surface finish and ISO 3290 G10–G1000 precision reduce friction and are suitable for precision applications.

Application of 420/420C Stainless Steel Balls

420 stainless steel balls
 

 
420 statinless steel ball
 

 
420 statinless steel ball
 

Know Detailed Information

Please Download Catalogue Here  
stainless steel ball
Our Factory
Short-Cycle-Press-Machine

Changzhou Risheng Steel Ball Co., Ltd. is located on the eastern shore of Taihu Lake, adjacent to Shanghai, with convenient transportation. Since its establishment in June 1995, the company has been dedicated to developing and manufacturing steel balls, integrating research and development with trade.

For many years, Risheng building on the foundation of the Wujin Metal Ball Research Institute, has been committed to researching steel ball manufacturing technology. We primarily produce shaft steel balls (AISI 52100), stainless steel balls (AISI 201/304/316/420/440/430), and carbon steel balls (AISI 1015/1045/1085) with diameters ranging from 0.8mm to 25.4mm, with precision grades up to G10, G40, and G100. We also offer custom specifications for alloy steel balls, military steel balls, copper balls, UFO balls, ceramic balls, and other metal balls. 

Packaging & Deliver of 420/420C Stainless Steel Ball
Short-Cycle-Press-Machine

High-strength inner packaging: Shockproof foam bags or custom plastic boxes are used to secure each 420/420C stainless steel ball in place, protecting it from impacts and scratches.

Moisture-proof protection: A moisture-proofing agent is added to effectively prevent the impact of moisture on the product during transportation.

Sturdy outer packaging: Thickened corrugated cardboard boxes or wooden pallets (for large orders) are used to ensure safe long-distance transportation.

Clear labeling: Product specifications, quantity, and drop warnings are clearly marked on the outer packaging box for easy verification and safe handling.

Service Process
short cycle press machnie
You can expect sound service from risheng service technicians when and where you need it most. From our application insight to our confidence at the counter, risheng will work to answer your requests with expert care and promptness. We know your better than anyone.
  • 1
    Speciality SERVICES
    Professionally manufactured 420/420C stainless steel balls, using precision technology to ensure excellent hardness and corrosion resistance, suitable for industrial precision applications.
  • 2
    Quality SERVICES
    High-quality 420/420Cstainless steel balls, strictly quality inspected, with high surface finish and hardness up to HRC 50-55, provide reliable and durable performance.
  • 3
    Extra Mile PRICING
    High-quality service response, rapid customized production, global logistics distribution, technical consultation and after-sales support to meet diverse needs.
Quality Certification
Short-Cycle-Press-Machine
3
QQ_1757510237965
未标题-3
未标题-4
未标题-5
未标题-7
FAQ of 420/420C Stainless Steel Ball

  • Q How should 420 Stainless Steel Balls be maintained or stored?

    A
    Store in a dry, clean environment to prevent moisture-induced corrosion.
    Avoid exposure to strong acids or chlorides (e.g., saltwater).
    Clean with mild solvents or water-based cleaners; ensure passivation is intact for corrosion resistance.

  • Q What are the primary applications of 420 Stainless Steel Balls

    A
    Industrial: Bearings, valves, pumps, and check valves.
    Automotive: Seatbelt mechanisms, lighters, and precision components.
    Consumer Goods: Ballpoint pens, cosmetic applicators (e.g., roll-on deodorants).
    Food Processing: Equipment requiring mild corrosion resistance.
    Light-Duty Grinding: Grinding media in non-aggressive environments.

  • Q What are the main features of 420 Stainless Steel Balls?

    A
    1.High hardness (50–55 HRC).
    2.Moderate corrosion resistance (resists fresh water, steam, mild acids).
    3.High tensile strength (1600–1900 MPa).
    4.Ferromagnetic properties for easy handling.
    5.Cost-effective compared to 440C or 316 stainless steel.

  • Q What are 420 Stainless Steel Balls?

    A  420 stainless steel balls are spherical components made from AISI 420 martensitic stainless steel, containing 0.15–0.50% carbon and 12–14% chromium. They are through-hardened (HRC 48–58) and passivated for enhanced durability and corrosion resistance, used in bearings, valves, and precision applications.

CONSULT YOUR STAINLESS STEEL BALL EXPERT

We help you avoid the pitfalls to deliver the quality and value your stainless steel ball need.
Contact us

PRODUCTS

QUICK LINKS

CONTACT US

  info@rsbearingball.com
       sales@rsbearingball.com
  +852 6825 8658
    Panjia Town, Summer Villa Village ,Wujin District, Changzhou City, China
COPYRIGHT © 2025  CHANGZHOU RISHENG STEEL BALL CO., LTD.   ALL RIGHTS RESERVED.