3.5mm 0.137inch Stainless Steel Balls AISI304 for Instruments 0.174G

Manufacturing Description

They show excellent mechanical characteristics, toughness and corrosion resistance. AISI 304L supplies lower carbon material, AISI 302 far better mechanical traits. Balls are provided in the passivated issue.


Stainless metal balls are commonly used in bearings, cars, bikes, bicycles, household appliances, chemical machinery, textile equipment, foods machinery, mining machinery, devices, and other fields.

Chemical composition 

Sort %C %Si %Mn %P %S %Cr %Ni %N
302 .150 max one.00 max two.00 max .045 max .030 max seventeen.00-19.00 eight.00-ten.00 .one hundred max
304 .080 max .seventy five max 2.00 max .045 max .030 max 18.00-twenty.00 eight.00-ten.fifty .a hundred max
304L .030 max .75 max 2.00 max .045 max .030 max eighteen.00-twenty.00 eight.00-10.50 .a hundred max

CZPT standards 

ITA United states GER FRA United kingdom RUS CHN JAP
X10CrNi18-8 302 1.4310 Z11CN18-08 301S21 12KH18N9 1Cr18Ni9 SUS301
X5CrNi18-ten 304 one.4301 Z7CN18-09 304S15 08KH18N10 0Cr18Ni9 SUS304
X2CrNi18-nine 304L 1.4307 Z3CN18-10 304S11 04KH18N10 00Cr19Ni10 SUS304L

Bodily / mechanical / thermal / electrical / magnetic properties 

Home Symbol U.o.M. Sort Notes Values
Density δ [g/cm3] Bodily Room temp. seven.ninety five
Young’s modulus E [GPa] Mechanical two hundred
Specific warmth c [J/kg-K] Thermal Space temp. five hundred
Coefficient of linear thermal enlargement α [10^-six/ºC] Thermal (ΔT=-100°C) 17.5
Thermal conductivity λ [W/(m·K)] Thermal Area temp. 15.8
CZPT resistivity ρ [Ω*m*10^-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] twenty – 39 (1)* [HV] a hundred – 250 (2)*
Supreme tensile strength Mechanical [MPa] 500 – 1300 [psix10^three] 72 – 188
Provider temperature Thermal [ºC] -196 / 700 [ºF] -320.eight / 1697

Corrosion Resistance 
Extremely excellent corrosion resistance with respect to organic and natural substances, oxidating remedies, foodstuff, sterilizing solutions. Good resistance with regard to atmospheric corrosion and dyes. They are subjected to pitting and crevice corrosion in existence of hot chloride answers and to anxiety corrosion when temperature exceeds 60°C. They do not resist to sulfuric acid answers. AISI 302 demonstrates somewhat greatest corrosion resistance with respect to AISI 304/304L stainless steels.


Property  Description
Hardness* Balls can be supplied in the (one) Chilly Labored (HRC twenty-39, common product) or (2) ANNEALED (HV 100-250, on desire) circumstances.
Magnetism Eventual magnetism of AISI 316 balls and in basic of all austenitc stainless steels strictly is dependent by the production approach, certain inquiries for not magnetic balls should priorly reported.
Precision Quality** On specifical request and for large portions, we can source G10 and G16 precision quality balls. Diameters from three.000 mm to one/two”.
Precision Grade** On specifical request we can offer G20-24-25-28-forty-48-50-60-eighty precision grade balls.

Other Products


Manufacturing Approach

Organization Info

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

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

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



Q:Do you offer samples prior to purchase? is it free of charge or additional ?
A: Of course, we could supply the sample ,But added.or we can talk about
Q:Can you do CZPT style ?
A: Of course,we can do customizes layout,you just give us your design,photograph,layout,dimension and your essential.
Q:What is your terms of payment ?
A: Payment: thirty% T/T in advance ,stability before shipment.

3.5mm 0.137inch Stainless Steel Balls AISI304 for Instruments 0.174G