Generation Description

They show excellent mechanical qualities, toughness and corrosion resistance. AISI 304L supplies lower carbon content material, AISI 302 much better mechanical traits. Balls are offered in the passivated situation.


Stainless metal balls are broadly utilized in bearings, vehicles, bikes, bicycles, home appliances, chemical equipment, textile equipment, foods equipment, mining equipment, devices, and other fields.

Chemical composition 

Sort %C %Si %Mn %P %S %Cr %Ni %N
302 .a hundred and fifty max 1.00 max 2.00 max .045 max .030 max seventeen.00-19.00 8.00-10.00 .a hundred max
304 .080 max .75 max two.00 max .045 max .030 max eighteen.00-twenty.00 eight.00-10.fifty .a hundred max
304L .030 max .75 max 2.00 max .045 max .030 max eighteen.00-20.00 eight.00-ten.fifty .a hundred max

CZPT standards 

ITA United states of america GER FRA British isles RUS CHN JAP
X10CrNi18-8 302 one.4310 Z11CN18-08 301S21 12KH18N9 1Cr18Ni9 SUS301
X5CrNi18-10 304 1.4301 Z7CN18-09 304S15 08KH18N10 0Cr18Ni9 SUS304
X2CrNi18-nine 304L 1.4307 Z3CN18-ten 304S11 04KH18N10 00Cr19Ni10 SUS304L

Bodily / mechanical / thermal / electric powered / magnetic properties 

Home Image U.o.M. Variety Notes Values
Density δ [g/cm3] Physical Area temp. 7.ninety five
Young's modulus E [GPa] Mechanical - 200
Specific heat c [J/kg-K] Thermal Space temp. five hundred
Coefficient of linear thermal growth α [10^-6/ºC] Thermal (ΔT=-100°C) seventeen.five
Thermal conductivity λ [W/(m·K)] Thermal Area temp. fifteen.eight
CZPT resistivity ρ [Ω*m*ten^-9] CZPT - 710
Relative magnetic permeability µ - Magnetic Paramagnetic one.571*

CZPT data 

House Type U.o.M. Values U.o.M. Values
Hardness Mechanical [HRC] 20 - 39 (one)* [HV] one hundred - 250 (two)*
Greatest tensile strength Mechanical [MPa] five hundred - 1300 [psix10^three] seventy two - 188
Support temperature Thermal [ºC] -196 / seven hundred [ºF] -320.eight / 1697

Corrosion Resistance 
Extremely great corrosion resistance with regard to natural and organic substances, oxidating answers, foodstuff, sterilizing remedies. Excellent resistance with respect to atmospheric corrosion and dyes. They are subjected to pitting and crevice corrosion in presence of very hot chloride answers and to pressure corrosion when temperature exceeds 60°C. They do not resist to sulfuric acid solutions. AISI 302 demonstrates a bit best corrosion resistance with regard to AISI 304/304L stainless steels.


Property  Description
Hardness* Balls can be equipped in the (one) Chilly Worked (HRC 20-39, common item) or (two) ANNEALED (HV 100-250, on need) situations.
Magnetism Eventual magnetism of AISI 316 balls and in basic of all austenitc stainless steels strictly depends by the production procedure, distinct inquiries for not magnetic balls ought to priorly described.
Precision Quality** On specifical request and for large quantities, we can source G10 and G16 precision grade balls. Diameters from 3.000 mm to 1/2".
Precision Quality** On specifical request we can provide G20-24-25-28-forty-48-fifty-60-eighty precision quality balls.

Other Products


Manufacturing Procedure

Company Data

ZheJiang Jinnai CZPT Trade Co.,Ltd. is 1 of the skilled manufactures which focus in the steel ball,like carbon

steel balls,stainless steel balls ,bearing chrome metal balls ,hollow metal balls ,iron balls ,magnetic buckyballs ,ball associated goods

such as ball cage or ball retainers, silicone balls ,plastic balls .ect…



Q:Do you give samples just before get? is it cost-free or extra ?
A: Indeed, we could offer you the sample ,But further.or we can discuss
Q:Can you do CZPT style ?
A: Indeed,we can do customizes design,you just give us your design,picture,layout,size and your required.
Q:What is your conditions of payment ?
A: Payment: 30% T/T in advance ,harmony before cargo.