OEM&ODM Factory Wholesale AISI 420c G100 1mm-25.4mm Solid Metal Bearing Steel Balls Manufacturers Stainless Steel Ball for Valve or Bearings

Product Description

Product Description

Excellent Quality 1.0mm- 63.5mm Bearings Steel Ball 316/304/430/440 Stainless Steel Bearing Balls

Update:March 5th, 2026

1,AISI 440C Stainless steel ball
Size: 0.35mm- 50.8mm. Grade:G10, G16, G40, G60, G100, G200. 
Hardness: HRC56-58, Hartford 440C stainless steel balls are passivated to remove free iron contaminants and facilitate spontaneous formation of a protective passive film. 
Magnetic: Martensitic steel, magnetic Fearture:High precision, good corrosion resistance, strong rust and wire resistance.
Applications: Bearings, stamping,hydraulic parts, valves, aerospace, seals, refrigeration equipments, high-precision instruments, etc.

2,AISI 420C Stainless steel ball
Size: 0.35mm- 50.8mm. Grade : G10-G1000. 
Hardness: HRC50-55. 
Magnetic: Martensitic steel, magnetic, good anti-rust ability, high hardness, AISI 420 stainless steel balls demonstrate good wire characteristics and hardness. Sightly less hardness and greater corrosion resistance than 440C. Features:Commonly known as stainless iron, good corrosion resistance and toughness. 
Applications: All kinds of precision machinery, bearings, electrical equipments, household appliances, auto parts, etc.

3,AISI 430 stainless steel ball

Diameter: 1MM-50.80MM
Hardness: HRC26
Grade : G10-G1000
Features: low price, poor rust resistance.
Application:hardware, ornaments, accessories, cosmetics, industry, industries with low requirements for antirust performance.Cosmetics agitators, nail polish and eyeliners, heat exchangers, measurement instruments. and valve balls.

4,AISI 304 Stainless steel ball

Size: 0.5mm-63.5mm
Grade : G80-G500
Hardness: ≤HRC21
Magnetic: Austenitic steel, non magnetic
Features: strong rust resistance, good corrosion resistance.widely used, good rust proof performance, good surface effect, environmental protection certification.
Applications:Household appliances such as valves, perfume bottles, nail polish, baby bottles, auto parts, air conditioners, electrical appliances, cosmetics, bearing slide, medical equipment, jewelry and many other industries.

5,AISI 316L Stainless steel ball
Size: 1.0mm- 63.5mmGrade : G80-G500 Hardness: ≤HRC26 Magnetic:Austenitic steel, non-magnetic 
Features:  the most suitable for industries with high anti-corrosion requirements, and the anti-rust ability is very strong,Excellent resistance to corrosion(apart of chloridric acids),Not hardenable austenitic inox. 
Applications: AISI 316L stainless steel ball can be used for medical equipment, chemical industry, aviation,aerospace,plastic hardware, perfume bottle,sprayer, valves, nail polish, motor, switch,iron,washing machines, refrigerators,air conditioners,medicinal materials,auto parts, bearings, instrument, bottle.

Specification

Our Stainless Steel Ball is including 440C 420C 304 316 201,The Chemical composition is as following
Chemical composition(%)	C	Cr	Si	Mn	P	S	Mo	Ni	Cu
AISI440C SS Ball	0.95-1.2	16-18	≤0.80	≤0.80	≤0.04	≤0.03	≤0.75	≤0.6	----
AISI420C SS Ball	0.26-0.43	12-14	≤0.80	≤1.25	≤0.035	≤0.03	≤0.6	≤0.6	----
AISI304 SS Ball	≤0.08	18-22	≤1.0	≤2.0	≤0.045	≤0.03	----	8-10	----
AISI316L SS Ball	≤0.08	16-18	≤1.0	≤2.0	≤0.045	≤0.03	2.0-3.0	12-15	----
AISI201 SS Ball	≤0.15	16-18	≤1.0	5.5-7.5	≤0.045	≤0.03	----	0.35-0.55	1.82
AISI430 SS Ball	≤0.12	16-18	≤1.0	≤1.0	≤0.04	≤0.03	----	----	----

1)Raw material.
In its initial stage, the ball appears in the form of a rod or wire. Secondly, quality control makes sure that the material composition is within a good range through metallurgical testing.

2) Header.
After passing the inspection phase, the raw material is then fed through a high speed header. This forms very rough balls.
3)Flashing. 
The flashing process cleans up the headed balls so that they are somewhat smoother in appearance.
4)Heat Treatment.
An extremely high temperature process where the flashed balls are placed in an industrial oven. This hardens the ball.
5)Grinding.
In this phase, we grind the sphere of the ball to an approximate diameter of the final sphere size.

6)Lapping.
The lapping of the ball brings it to it's desired final dimension. This is the final forming process to keep the ball within grade tolerance limit. 
7)Final Inspection.
Lastly, the quality control department accurately measures and tests the ball to ensure the highest quality.

Company Profile

Which certifications has our company obtained?

Our operations and products are backed by key international certifications, including ISO 9001 for quality management, CE for the European market, and KOC for South Korea. These credentials are not just badges of compliance but essential enablers of our global reach, supporting our exports to a network of over 100 countries and reinforcing our clients' trust in our professional standards.

Q1:What's the delivery time?
A : 5-10 work days after receiving client's payment
 
Q2: What's package?
A: wooden box packaging
 
Q3: Do you have any timely technology supports?
A: we have a professional technology supporting team for your timely services. We prepare the technical documents for you, also
you can contact us by telephone, online chat (whats, skype, phone).
 
Q4: What's the payment method?
A: T/T, WESTERN UNION, MONEY GRAM,LC...
 
Q5: How to ensure that I received the machine undamaged?
A: At first , our package is standard for shipping, before packing, we will confirm product undamaged, otherwise, please contact
within 2days. Because we've bought insurance for you, we or shipping company will be responsible!
 
If any need, please contact us any time!!!
We are well aware that a satisfactory shopping experience is not only dependent on excellent product quality, but also requires thoughtful and reliable after-sales service.
From the moment you chose us, we have embarked on a long-term commitment and protection.No matter what problems you encounter, our after-sales team will provide you with efficient and prompt solutions with a warm and patient attitude. Your satisfaction is our eternal pursuit.