13.2mm 0.519inch AISI440c Stainless Steel Balls for Roller Skates 9.43G

13.2mm 0.519inch AISI440c Stainless Steel Balls for Roller Skates 9.43G

Manufacturing Description

They exhibit great mechanical characteristics, toughness and corrosion resistance. AISI 304L gives lower carbon material, AISI 302 much better mechanical characteristics. Balls are presented in the passivated condition.


Stainless metal balls are extensively utilized in bearings, cars, motorcycles, bicycles, house appliances, chemical equipment, textile machinery, food machinery, mining machinery, devices, and other fields.

Chemical composition 

Kind %C %Si %Mn %P %S %Cr %Ni %N
302 .150 max one.00 max two.00 max .045 max .030 max 17.00-19.00 8.00-ten.00 .a hundred max
304 .080 max .75 max 2.00 max .045 max .030 max eighteen.00-twenty.00 eight.00-10.fifty .100 max
304L .030 max .seventy five max two.00 max .045 max .030 max 18.00-20.00 8.00-10.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 one.4301 Z7CN18-09 304S15 08KH18N10 0Cr18Ni9 SUS304
X2CrNi18-nine 304L 1.4307 Z3CN18-10 304S11 04KH18N10 00Cr19Ni10 SUS304L

Bodily / mechanical / thermal / electric powered / magnetic properties 

Property Symbol U.o.M. Variety Notes Values
Density δ [g/cm3] Actual physical Area temp. 7.95
Young’s modulus E [GPa] Mechanical two hundred
Specific warmth c [J/kg-K] Thermal Space temp. five hundred
Coefficient of linear thermal growth α [10^-6/ºC] Thermal (ΔT=-100°C) 17.five
Thermal conductivity λ [W/(m·K)] Thermal Area temp. 15.8
CZPT resistivity ρ [Ω*m*ten^-9] CZPT 710
Relative magnetic permeability µ Magnetic Paramagnetic one.571*

CZPT data 

Residence Type U.o.M. Values U.o.M. Values
Hardness Mechanical [HRC] 20 – 39 (one)* [HV] a hundred – 250 (two)*
Greatest tensile toughness Mechanical [MPa] 500 – 1300 [psix10^three] 72 – 188
Support temperature Thermal [ºC] -196 / seven-hundred [ºF] -320.eight / 1697

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


Property  Description
Hardness* Balls can be provided in the (one) Cold Worked (HRC twenty-39, normal product) or (two) ANNEALED (HV 100-250, on demand from customers) circumstances.
Magnetism Eventual magnetism of AISI 316 balls and in general of all austenitc stainless steels strictly is dependent by the producing method, certain inquiries for not magnetic balls must priorly reported.
Precision Grade** On specifical ask for and for large portions, we can source G10 and G16 precision grade balls. Diameters from 3.000 mm to 1/two”.
Precision Quality** On specifical request we can provide G20-24-twenty five-28-forty-forty eight-fifty-60-eighty precision grade balls.

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Generation Method

Firm Info

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

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

these kinds of as ball cage or ball retainers, silicone balls ,plastic balls .ect…



Q:Do you give samples ahead of get? is it cost-free or added ?
A: Sure, we could supply the sample ,But further.or we can talk about
Q:Can you do CZPT style ?
A: Sure,we can do customizes design and style,you just give us your layout,photograph,layout,dimensions and your necessary.
Q:What is your phrases of payment ?
A: Payment: thirty% T/T in progress ,stability prior to cargo.

13.2mm 0.519inch AISI440c Stainless Steel Balls for Roller Skates 9.43G

June 2024