Product Details

aisi302 aisi304 aisi316 aisi420 aisi440C stainless steel balls 3mm

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Feicheng Qingzheng Industry&Trade Co.,Ltd

Features

Austenitic/ferritic/martensitic stainless steel balls, they can be provided in the annealed, cold worked, hardened, magnetic or not magnetic state. The wide variety of steels allows to choose the right material when high corrosion resistance or hardness or mechanical/wear and abrasion resistance properties are demanded.
201 stainless steel balls: Cr-Mn stainless steel balls, with properties similar to AISI 302/304 balls (slightly higher mechanical characteristics). Balls are provided in the passivated condition.
304 stainless steel balls: Unhardened austenitc stainless steel balls, they display good mechanical characteristics, toughness and corrosion resistance. AISI 304L provides lower carbon content, AISI 302 better mechanical characteristics. Balls are provided in the passivated condition.
316 stainless steel balls:Austenitic stainless steel balls with higher corrosion resistance than AISI 304 balls. They show good toughness. Balls are provided in the passivated condition.
420C stainless steel balls:Martensitic hardened stainless steel balls, they feature good hardness, corrosion resistance, wear and abrasion resistance. Balls are provided in the passivated condition.
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.

Chemical Composition(%)

Type	%C	%Si	%Mn	%P	%S	%Cr	%Ni	%N
201	0.15 max	1.00 max	5.50-7.50	0.060 max	0.030 max	16.00-18.00	3.50-5.50	0.250 max
304	0.080 max	0.75 max	2.00 max	0.045 max	0.030 max	18.00-20.00	8.00-10.50	0.100 max
316	0.080 max	1.00 max	2.00 max	0.045 max	0.030 max	16.00-18.00	10.00-14.00	2.00-3.00
316L	0.030 max	1.00 max	2.00 max	0.045 max	0.030 max	16.00-18.00	10.10-14.00	2.00-3.00
430	0.120 max	1.00 max	1.00 max	0.040 max	0.030 max	16.00-18.00	-	-
420C	0.43-0.50	1.00 max	1.00 max	0.040 max	0.030 max	12.50-14.50	-	-
440C	0.95-1.20	1.00 max	1.00 max	0.040 max	0.030 max	16.00-18.00	0.75 max	-

Corrosion resistance

201 stainless steel balls: Similar to the corrosion resistance of AISI 304 material.

304 stainless steel balls: Very good corrosion resistance with respect to organic substances, oxidating solutions, foodstuff, sterilizing solutions. Good resistance with respect to atmospheric corrosion and dyes. They are subjected to pitting and crevice corrosion in presence of hot chloride solutions and to stress corrosion when temperature exceeds 60°C. They do not resist to sulfuric acid solutions.

316 stainless steel balls: Very good corrosion resistance with respect to organic substances, good resistance to several strong acids (acetic, phosphoric, sulphuric acid) and on sea water. They are subjected to pitting and crevice corrosion in presence of hot chloride solutions and to stress corrosion when temperature exceeds 60°C. They do not resist in contact with hydrochloric and hydrofluoric acids, aqua regia, iron and magnesium chlorides.

420C stainless steel balls: Good corrosion resistance in industrial atmosphere, freshwater, steam, alcool, ammonium, several oilfield products and organic compounds, dairy products, mild acid environments. Fairish in foodstuff and alkaline solutions. Fair in salt atmosphere. It does not resist in contact with sea water and strong acids (even if diluted).

440C stainless steel balls: The material resists to corrosion in contact with freshwater, steam, oil, petrol, alcohol. They are subjected to pitting corrosion in sea water environments. Poor corrosion resistance in acid environments.

Production flow

Package

Shipping

Company introduction

Feicheng Qingzheng Industry & Trade Co.,Ltd is a professional manufacturer of high precision steel ball, located in shandong province. Always commit ourselves to great services, quality products and reasonable prices. Qingzheng successfully satisfy customer both in and abroad in the passed 10 years. We earnestly hope to build long-term business relationship with old and new customer.

There are our products specification Range:

Diameter: 0.5mm - 50.8mm

Grade: G3- G1000

Material: Carbon Steel Balls AISI 1010/1015/1045/1065/1085

Chrome Steel Balls AISI 52100 / DIN 100Cr6

Stainless Steel Balls AISI 302/304/316/420/440C, etc.

Application: Bearing, Drawer Slide, Caster, Bicycle, Hardware,

Cosmetic bottle, Grinding and Welding Media, etc.