20.5mm 0.807inch AISI304 Stainless Steel Balls for Plastic Hardware 35.139g

Production Description

They display excellent mechanical qualities, toughness and corrosion resistance. AISI 304L offers lower carbon articles, AISI 302 far better mechanical traits. Balls are supplied in the passivated situation.


Unique bearings and pumps, aerosol pumps, gardening and household sprayers, fragrance miniature pumps, seams, healthcare application valves, agricultural backpack sprayers. They are employed in foodstuff, aerospace and military business.

Chemical composition 

Variety %C %Si %Mn %P %S %Cr %Ni %N
302 .a hundred and fifty max one.00 max 2.00 max .045 max .030 max seventeen.00-19.00 8.00-ten.00 .one hundred max
304 .080 max .75 max two.00 max .045 max .030 max eighteen.00-twenty.00 8.00-10.fifty .100 max
304L .030 max .seventy five max 2.00 max .045 max .030 max eighteen.00-twenty.00 eight.00-ten.50 .one hundred max

CZPT standards 

ITA United states of america GER FRA British isles RUS CHN JAP
X10CrNi18-eight 302 one.4310 Z11CN18-08 301S21 12KH18N9 1Cr18Ni9 SUS301
X5CrNi18-ten 304 1.4301 Z7CN18-09 304S15 08KH18N10 0Cr18Ni9 SUS304
X2CrNi18-9 304L 1.4307 Z3CN18-10 304S11 04KH18N10 00Cr19Ni10 SUS304L

Physical / mechanical / thermal / electric / magnetic properties 

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

CZPT data 

House Variety U.o.M. Values U.o.M. Values
Hardness Mechanical [HRC] 20 – 39 (one)* [HV] one hundred – 250 (two)*
Ultimate tensile power Mechanical [MPa] 500 – 1300 [psix10^three] seventy two – 188
Provider temperature Thermal [ºC] -196 / seven-hundred [ºF] -320.8 / 1697

Corrosion Resistance 
Extremely good corrosion resistance with respect to natural substances, oxidating remedies, foodstuff, sterilizing remedies. Excellent resistance with respect to atmospheric corrosion and dyes. They are subjected to pitting and crevice corrosion in presence of sizzling chloride answers and to anxiety corrosion when temperature exceeds 60°C. They do not resist to sulfuric acid solutions. AISI 302 demonstrates 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, common solution) or (2) ANNEALED (HV a hundred-250, on need) situations.
Magnetism Eventual magnetism of AISI 316 balls and in basic of all austenitc stainless steels strictly relies upon by the producing procedure, certain inquiries for not magnetic balls must priorly noted.
Precision Quality** On specifical ask for and for huge portions, we can provide G10 and G16 precision quality balls. Diameters from 3.000 mm to one/two”.
Precision Grade** On specifical request we can supply G20-24-25-28-forty-forty eight-50-sixty-80 precision quality balls.

Other Goods


Manufacturing Process

Company Information

ZheJiang Jinnai CZPT Trade Co.,Ltd. is one particular of the specialist manufactures which focus in the steel ball,like carbon

metal balls,stainless steel balls ,bearing chrome steel balls ,hollow steel balls ,iron balls ,magnetic buckyballs ,ball relevant merchandise

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



Q:Do you supply samples before purchase? is it free or additional ?
A: Of course, we could provide the sample ,But additional.or we can discuss
Q:Can you do CZPT layout ?
A: Sure,we can do customizes style,you just give us your design and style,image,format,dimension and your necessary.
Q:What is your conditions of payment ?
A: Payment: thirty% T/T in advance ,balance ahead of shipment.

20.5mm 0.807inch AISI304 Stainless Steel Balls for Plastic Hardware 35.139g