OEM/ODM China Steel Half Sphere - 440 stainless steel balls high quality precision – Mingzhu

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Our target should be to consolidate and enhance the high quality and service of current goods, in the meantime frequently create new products to satisfy diverse customers' calls for for 6mm Stainless Steel Balls , Round Metal Ball , Carbon Steel Balls Bulkbuy , Created solutions with brand price. We attend seriously to produce and behave with integrity, and because of the favor of clients in your own home and overseas in the xxx industry.
OEM/ODM China Steel Half Sphere - 440 stainless steel balls high quality precision – Mingzhu Detail:

440 stainless steel balls combine the remarkable hardness with the great resistance to corrosion caused by water, steam, air as well as by gasoline, oil and alcohol. High degree of surface finish and very precise size tolerances make this type of stainless steel are the best for the usage in stainless steel high precision ball bearings, valves, ball pens.

Specification

440 stainless steel balls

Diameters

2.0mm – 55.0mm

Grade

G10-G500

Application

ball bearings, oil refinery valves, ball point pens

Hardness

440 stainless steel balls

According to DIN 5401:2002-08

According to ANSI/ABMA Std. 10A-2001

over

up to

all

all

55/60 HRC

55/62 HRC

Equivalence Of Material

440 stainless steel balls

AISI/ASTM(USA)

440B

VDEh (GER)

1.4112

JIS (JAP)

SUS440B

BS (UK)

-

NF (France)

-

ГОСТ(Russia)

-

GB (China)

-

Chemical Composition

440 stainless steel balls

C

0.85% - 0.95%

Si

≤1.00%

Mn

≤1.00%

P

≤0.04%

S

≤0.015%

Cr

17.00% - 19.00%

Mo

0.90% - 1.30%

V

0.07% - 0.12%

Hardness Comparision Chart

1010-low-carbon-steel-balls-8

Our Advantage

● We have been engaged in steel ball production for more than 26 years;

● We offer a great variety of sizes ranged from 3.175mm to 38.1mm. Non-standard sizes and gauges can be manufactured under special request (such as 5.1mm, 5.15mm, 5.2mm, 5.3mm 5.4mm for seat track; 14.0mm for cam shaft and CV joint, etc.);

● We have a wide stock availability. Most of the standard sizes (3.175mm~38.1mm) and gauges (-8~+8) are available, which can be delivered immediately;

● Each batch of balls is inspected by sophisticated machines: roundness tester, roughness tester, metallographic analysis microscope, hardness tester (HRC and HV) to guarantee the quality.

440-stainless-steel-balls-7

FAQ

Q: How do I choose the appropriate stainless steel brand (304(L)/316(L)/420(C)/440(C))? What are the main differences between 300 and 400 series stainless steel balls?
A:  To choose the proper steel brand for stainless steel balls, we should get to know well the properties of each brand and the application of the balls. The most common used stainless steel balls can be divided simply in two groups: 300 series and 400 series.
300 series “austenitic” stainless steel balls contain more chromium and nickel elements and are theoretically non-magnetic (actually are very low-magnetic. Totally non-magnetic require additionally heat treated.). Normally they are produced without the heat treatment process. They have better corrosion resistance than 400 series (in fact, the highest corrosion resistance of the stainless group. Although 300 series balls are all quite resistant, however 316 and 304 balls show different resistance to some substance. For more details, please refer to pages of different stainless steel balls) . They are less brittle, so can be applied also for sealing use. 400 series stainless steel balls contain more carbon, which makes it magnetic and more hardness. They can be easily heat treated like chrome steel balls or carbon steel balls to increase hardness. 400 series stainless steel balls are commonly used for applications that demand water-resistance, strength, hardness and wear resistance.

Q: How is your quality assurance?
A: All produced balls are 100% sorted by the sorting bar and checked by the photoelectric surface defect detector. Before packaging samples balls from the lot are to send for final inspection to check for the roughness, roundness, hardness, variation, crush load and vibration in compliance with the standard. If all requirements are met, a inspection report will be made for the customer. Our sophisticated laboratory is equipped with high precision machines and equipment: Rockwell hardness tester, Vickers hardness tester, crushing load machine, roughness meter, roundness meter, diameter comparator, metallographic microscope, vibration measuring instrument, etc..


Product detail pictures:

OEM/ODM China Steel Half Sphere - 440 stainless steel balls high quality precision  – Mingzhu detail pictures

OEM/ODM China Steel Half Sphere - 440 stainless steel balls high quality precision  – Mingzhu detail pictures

OEM/ODM China Steel Half Sphere - 440 stainless steel balls high quality precision  – Mingzhu detail pictures

OEM/ODM China Steel Half Sphere - 440 stainless steel balls high quality precision  – Mingzhu detail pictures

OEM/ODM China Steel Half Sphere - 440 stainless steel balls high quality precision  – Mingzhu detail pictures

OEM/ODM China Steel Half Sphere - 440 stainless steel balls high quality precision  – Mingzhu detail pictures


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All we do is often involved with our tenet Purchaser to start with, Rely on initially, devoting over the food stuff packaging and environmental defense for OEM/ODM China Steel Half Sphere - 440 stainless steel balls high quality precision – Mingzhu , The product will supply to all over the world, such as: Burundi, South Africa, Burundi, We adopt advanced production equipment and technology, and perfect testing equipment and methods to ensure our product quality. With our high-level talents, scientific management, excellent teams, and attentive service, our merchandise are favored by domestic and foreign customers. With your support, we'll build a better tomorrow!
  • Factory equipment is advanced in the industry and the product is fine workmanship, moreover the price is very cheap, value for money!
    5 Stars By Erica from Nicaragua - 2017.09.09 10:18
    The customer service reprersentative explained very detailed, service attitude is very good, reply is very timely and comprehensive, a happy communication! We hope to have a opportunity to cooperate.
    5 Stars By April from Angola - 2018.11.02 11:11