4.763mm 3 16inch AISI440c Stainless Steel Balls for Switch 0.440g

Manufacturing Description

They display good mechanical qualities, toughness and corrosion resistance. AISI 304L gives lower carbon content, AISI 302 far better mechanical qualities. Balls are offered in the passivated problem.


Stainless steel balls are widely employed in bearings, automobiles, bikes, bicycles, household appliances, chemical machinery, textile machinery, food machinery, mining machinery, devices, and other fields.

Chemical composition 

Kind %C %Si %Mn %P %S %Cr %Ni %N
302 .one hundred fifty max 1.00 max 2.00 max .045 max .030 max seventeen.00-19.00 8.00-ten.00 .100 max
304 .080 max .seventy five max 2.00 max .045 max .030 max 18.00-20.00 8.00-10.50 .a hundred max
304L .030 max .75 max 2.00 max .045 max .030 max eighteen.00-twenty.00 8.00-10.fifty .a hundred max

CZPT standards 

ITA United states GER FRA British isles RUS CHN JAP
X10CrNi18-8 302 1.4310 Z11CN18-08 301S21 12KH18N9 1Cr18Ni9 SUS301
X5CrNi18-ten 304 1.4301 Z7CN18-09 304S15 08KH18N10 0Cr18Ni9 SUS304
X2CrNi18-9 304L one.4307 Z3CN18-ten 304S11 04KH18N10 00Cr19Ni10 SUS304L

Actual physical / mechanical / thermal / electric powered / magnetic properties 

House Image U.o.M. Kind Notes Values
Density δ [g/cm3] Actual physical Space temp. seven.ninety five
Young’s modulus E [GPa] Mechanical 200
Certain heat c [J/kg-K] Thermal Place temp. 500
Coefficient of linear thermal enlargement α [ten^-6/ºC] Thermal (ΔT=-100°C) 17.five
Thermal conductivity λ [W/(m·K)] Thermal Space temp. 15.8
CZPT resistivity ρ [Ω*m*ten^-9] CZPT 710
Relative magnetic permeability µ Magnetic Paramagnetic one.571*

CZPT data 

House Sort U.o.M. Values U.o.M. Values
Hardness Mechanical [HRC] 20 – 39 (1)* [HV] one hundred – 250 (two)*
Final tensile energy Mechanical [MPa] five hundred – 1300 [psix10^three] seventy two – 188
Services temperature Thermal [ºC] -196 / seven-hundred [ºF] -320.eight / 1697

Corrosion Resistance 
Very very good corrosion resistance with regard to organic substances, oxidating solutions, foodstuff, sterilizing options. Excellent resistance with regard to atmospheric corrosion and dyes. They are subjected to pitting and crevice corrosion in presence of sizzling chloride answers and to stress corrosion when temperature exceeds 60°C. They do not resist to sulfuric acid options. AISI 302 displays somewhat best corrosion resistance with respect to AISI 304/304L stainless steels.


Property  Description
Hardness* Balls can be supplied in the (1) Cold Labored (HRC 20-39, normal solution) or (two) ANNEALED (HV a hundred-250, on demand) conditions.
Magnetism Eventual magnetism of AISI 316 balls and in standard of all austenitc stainless steels strictly is dependent by the manufacturing procedure, particular inquiries for not magnetic balls must priorly reported.
Precision Grade** On specifical request and for huge quantities, we can supply G10 and G16 precision grade balls. Diameters from three.000 mm to one/2″.
Precision Quality** On specifical ask for we can provide G20-24-twenty five-28-40-48-fifty-sixty-eighty precision quality balls.

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Generation Approach

Business Information

ZheJiang Jinnai CZPT Trade Co.,Ltd. is a single of the expert manufactures which focus in the metal ball,like carbon

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

this kind of as ball cage or ball retainers, silicone balls ,plastic balls .ect…



Q:Do you provide samples prior to order? is it free or extra ?
A: Of course, we could supply the sample ,But further.or we can talk about
Q:Can you do CZPT layout ?
A: Yes,we can do customizes layout,you just give us your design,photograph,layout,dimensions and your needed.
Q:What is your terms of payment ?
A: Payment: thirty% T/T in advance ,balance prior to cargo.

4.763mm 3 16inch AISI440c Stainless Steel Balls for Switch 0.440g