8653-86303611
North of Qiaonan Village, Gangcheng Town, Ningyang Country, China((Industrial Area)), Tai′an, Shandong, China
AISI 316 steel balls have no good hardness, but have better corrosion resistance than AISI 304, AISI 316 stainless steel balls offer good corrosion resistance to sulphuric acid compounds. They are used in nail polish, trigger sprayers, dispenser valves, body jewelry and so on.
AISI 316 stainless steel balls in our factory:
Minimum diameter :0.5mm
Best precision :G100
Hardness :HRc25-39
Stainless steel (AISI 316L)
AISI 316L type stainless steel ball has lower carbon content than AISI 316 material, which offers ever higher corrosion resistance, also gives excellent resistance to sulphuric acid compounds. Usually used in valves, jewelry and medical uses.
AISI 316L steel ball in our factory:
Minimum diameter :0.5mm
Best precision :G10
Hardness :HRc25-39
Stainless steel (AISI 304)
There are many kinds of stainless steel balls, AISI 304, AISI 316, AISI 316L, AISI 420, AISI 420C, AISI 440, AISI 440C.AISI 304 steel balls have no good hardness but offer good corrosion resistance, they offer good resistance to atomospheric corrosion, dyes, food processing, valves, sex products and so on.
AISI 304 stainless steel ball in our factory :
Minimum diameter: 0.5mm
Best precision :G100
Hardness :HRc25-39
Stainless stel (AISI 420)
AISI 420 have good hardness and fair-to-good corrosion resistance and strength, it is generally used for all applications requiring resistance to corrosion such as bearings, valves, writting instruments, food environment, fresh water, many petroleum products and mild acid environments. AISI 420 is also magnetic.
AISI 420 stainless steel balls in our factory:
Minimum diameter :0.5mm
Best precision :G10
Hardness :HRc52-65
Stainless steel (AISI 440C)
AISI 440C steel balls offer the maxmum in strength and fair corrosion resistance among stainless material, they also have good hardness, so 440C steel balls usually used in bearings, valves and so on.
AISI 440C stainless steel balls in our factory:
Minimum diameter: 0.5mm
Best precision:G10
Hardness:HRc60-67
Stainless steel (AISI 420C)
AISI type stainless steel balls have the advantage of maximum hardness combined with corrosion resisting properties, 420C balls have a slightly higher hardness range than 420. Its fine surface finish, also makes them especiall useful in bearings and valves and other severe environment applications.
AISI 420c stainless steel balls in our factory:
Minimum diameter: 0.5mm
Best precision: G10
Hardness: HRc52-65
Material | Feature | General Applications |
AISI 420 | Magnetic, Harden-able, fair corrosion resistance | used for special bearings and valves where Balls requiring a combine -action of hardness and corrosion resistance |
AISI 440C | Magnetic, highest hardness, good corrosion resistance | used in bearing nozzles and valves where lubrication is poor or absent |
AISI 304 | austentitic, corrosion resistance, slightly magnetic, however annealing can makes it non - magnetic | Used in valves and relevant application , food products, aerosols, home sprays, perfumes and medical equipment. |
AISI 316 | non - magnetic, good corrosion resistance even when exposed to marine atmosphere and sulfuric acid. | used in presence of sulphuric, phosphoric and acetic acids. |
AISI 316 | Characteristics same as 316 but with excellent corrosion resistance, Lower carbon content than regular 316. | expecially used in Jewelry, and Human Implant Applications |
Tolerance Level and Technical Requirements
Grade | Vdws(≤) | Sph(≤) | Ra(≤) | Vdwl(≤) | Tdn(≤) |
10 | 0.25um | 0.25um | 0.025um | 0.5um | * |
16 | 0.4um | 0.40um | 0.032um | 0.8um | * |
20 | 0.5um | 0.50um | 0.04um | 1um | * |
28 | 0.7um | 0.70um | 0.05um | 1.4um | * |
40 | 1.0um | 1.00um | 0.08um | 2um | * |
60 | 1.5um | 1.50um | 0.10um | 3um | * |
100 | 2.5um | 2.50um | 0.125um | 5um | ±12.5um |
200 | 5um | 5um | 0.2um | 10um | ±25um |
500 | 13um | 13um | * | 25um | ±50um |
1000 | 25um | 25um | * | 50um | ±125um |
Ningyang Xinxin Stainless Steel Ball Manufacture Co., Ltd is one of famous and professional stainless steel ball factory from china .
We have two professional factory to produce steel ball ,one is in Shandong province(5000 square meters),other one is in Henan province (10000 square meters ) .
With over 20years history,our factory have good reputation from our customers and government,so our factory passed ISO9001:2008 and our products got SGS,RHOS Certificates .
We mainly produce stainless steel ball (201, 304, 316, 420,420C,440C,430). also produce chrome steel ball (AISI52100,100CR6,GCR15),carbon steel ball(1015,1010,1045,1085), copper brass balls, plastic ball,glass ball,Tungsten carbide ball, flying saucer ball, polishing media ball,ceramic ball,Aluminum ball and other kinds of material ball.
We have the ability to provide many kinds of steel ball, of which accuracy range is G10-G1000,size 0.4mm-50.8mm. The brand "XinXin" is trusted deeply by customers. Our products have been widely applied in the hardware goods form a complete set for the aviation and spaceflight industry, automobiles, sprayers, stainless steel bearings, and handicraft and precision instruments.
We have advanced production equipment and consummative instruments. We use perfect equipment to detect the roundness, libration size and the quality of the surface of steel balls.
Welcome to visit our factory and looking forwarder to cooperate with you !
Heading:
In the first step, heading machines cut wire into short lengths and form it into spherical shapes between dies.
Deflashing:
The flash line, a ridge left by the forming dies, is removed as balls roll between heavy,cast iron plates.
Soft Grinding:
Similar to deflashing, except that a grinding stone is used to improve precision.
Heat-treating:
Carbon steel balls are next carburized and hardened. Heat treatment imparts the desired hardness and case depth.
Descaling:
This step removes the residues and by-products from the heat-treating process.
Hard Grinding:
Slow, meticulous grinding assures proper sizing and sphericity, with tolerances as closeas ±.0001".
Lapping:
Several proprietary lapping processes can bring balls to the requirements of ISO 3290 Grade10 - 48.
Finishing:
Proprietary chemical and mechanical processes give the balls their final micro-smoothed finish, for increased wear resistance and product longevity.
1. Ball chose by people
2. Ball select by machine
3. Ball test by Vernier calipe
4. check ball surface by magnifying glass
5. Ball test by three needle gauge
6. Ball test hardness by hardness tester
Our factory already get ISO and our products already passed SGS,FDA,ROHS certificate as below :
Package type : a, Steel drum packing
1) 250 kg per steel drum
2) 4 drums on one pallet
3) Drum with pallet size: 75*75*65cm
b, Carton package
1) 25 kg per carton , 36 cartons on one pallet
2) Carton size: 30*20*15
