304 Stainless Steel Balls
Applied Area304 stainless steel ball can be used in iatrical instrument, chemical industry, aviation. Plastic hardware: scent bottle, sprayer, valve, nail polish, switch, washing machine, fridge, air condition, medicinal materials, automotive fittings, bearing, nursing
bottle and so on.
Speciality representative of Austenitic stainless steel. it is nonmagnetic, but magnetic after rolling, and the magnetism can be taken out, HRC≤26.It has good antirust and anticorrosive capability.
316 Stainless Steel Balls
Applied Are316 stainless steel ball is used in many special industry as iatrical instrument, chemical industry, aviation, scent bottle, sprayer, valve, nail polish, mobile phone fittings.
Speciality Austenitic stainless steels, It is the best steel ball in the steel ball area,HRC≤26,its Capability is better than 304 stainless steel ball.
420 Stainless Steel Balls
Applied Area420 stainless steel ball is used in the industry of high precision and antirust: motorcycle fittings, chain wheel,
stainless steel bearings, plastic bearings, craftwork, valve, petroleum and so on.
Speciality It is also called stainless iron, it is magnetic and has good antirust capability. The HRC is 50-55
440C Stainless Steel Balls
Martensitic hardened stainless steel balls, they feature remarkable hardness,wear resistance, surface finishing, narrow dimensional tolerances. For that reason this type of steel is frequently used in precision devices. Balls are provided in the passivated condition.
MATERIAL | C% | Si% | Mn% | P% | S% | Cr% | Mo% | Ni% | N |
AISI440C | 0.95-1.20 | 1.00 max | 1.00 max | 0.03 max | 0.03 max | 16.0-18.0 | 0.4-0.75 | \ | \ |
AISI302 | 0.15max | 1.01 max | 2.00 max | 0.045 max | 0.03 max | 17.0-19.0 | \ | 8--10 | 0.1max |
AISI304 | 0.08max | 1.02 max | 2.00 max | 0.04 5max | 0.03 max | 17.0-29.0 | \ | 8--10 | \ |
AISI316 | 0.08max | 1.03 max | 2.00 max | 0.045 max | 0.03 max | 16.0-18.0 | 2.0-3.0 | 10--14 | 0.1max |
AISI420 | 0.26--0.35 | 1.04 max | 1.00 max | 0.035 max | 0.03 max | 12.0-14.0 | \ | \ | \ |
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 |
| C% | Si % | Mn % | Cr % | Ni % | Mo % | P % | S % | Other | characteristic |
AISI 302 | 0.15 max | 1.00 max | 2.00 max | 17.0~19.0 | 8.0~10.5 | | 0.045 max | 0.03 max | | Slightly magnetic Austinitic |
AISI 304 | 0.07 max | 1.00 max | 2.00 max | 17.0~19.0 | 8.50~10.5 | | 0.045 max | 0.03 max | | Slightly magnetic Austinitic |
AISI 316 | 0.07 max | 1.00 max | 2.00 max | 16.5~18.5 | 10.5~13.5 | 2000~2.50 | 0.045 max | 0.03 max | | Non-magnetic Austinitic Excellent corrosion resistance |
AISI 420J | 0.17~0.25 | 1.00 max | 1.00 max | 12.0~14.0 | | | 0.045 max | 0.03 max | | magnetic Hardenable HRC 48 Min fair corrosion resistance |
AISI 430 | 0.08 max | 1.00 max | 1.00 max | 15.5~17.5 | | | 0.045 | 0.03 max | | fair-good corrosion resistance |
AISI 440C | 0.95~1.20 | 1.00 max | 1.00 max | 16.0~18.0 | | 0.40~0.80 | 0.04 max | 0.02 max | | fair corrosion resistance Hardenable HRC 58 Min |
Size | 0.5 - 50.8mm |
Grade | G10-1000 |
Feature | 1)Strong anti-wear resistance 2)High precision, good surface 3)Low breaking ratio and low application cost |
application | 1) medical instrument ball, food machinery steel ball, cosmetics ball accessories, human adorn article ball, instrument ball bearing , 2) special industries such as magnetic rod ball, chemical ball, aviation ball, aerospace stainless steel ball: perfume bottle ball, sprayer ball valve, ball valve, ball, adorn article ball, mobile phone plate steel ball, the ball rings, earrings ball, tongue ring ball, massage chair ball, massager ball, bottle stopper ball. |
Production procession
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.
PACKING DETAILS:
1)woven bag+ pallet, each woven bag is 25kg, 40bags on one pallet
G/W:1015KG N/W:1000KG Volume:0.3cbm
2)woven bag +carton+ pallet, you can customize the content about the outside of carton.
G/W:25.4KG N/W:25KG Volume:0.268cbm
3)40 woven bags / 40 cartons +wooden case+ pallet
G/W:1024KG N/W:1000KG Volume:0.36cbm
4)drum+ pallet
G/W:1045KG N/W:1000KG Volume:0.3cbm
Our factory main products:
1) Stainless Steel Balls (AISI/SUS 201/ 304/ 316/ 420/302/440)
2) precision glass ball
3) Bearing/ Chrome Steel Balls
4) Precision Steel Balls
5) Brass/ Copper Steel Ball
6) Grinding Steel Balls
7)tungsten carbide ball
we will provide customers with quality products, perfect service and fast delivery at competitive pricing! our products are very well known in more than European and other foreign countries. your cooperation and order are warmly welcome