Special bearings and pumps, aerosol pumps, gardening and household sprayers, perfume miniature pumps, seams, medical application valves, agricultural backpack sprayers.
They are used in foodstuff, aerospace and military industry.
Unhardened austenitc stainless steel balls, they display good mechanical characteristics, toughness and corrosion resistance.
AISI 304L provides lower carbon content, AISI 302 better mechanical characteristics.
Balls are provided in the passivated condition.
Applications
|
|---|
Chemical composition
Type
|
%C
|
%Si
|
%Mn
|
%P
|
%S
|
%Cr
|
%Ni
|
%N
|
|---|---|---|---|---|---|---|---|---|
302
|
0.150 max
|
1.00 max
|
2.00 max
|
0.045 max
|
0.030 max
|
17.00-19.00
|
8.00-10.00
|
0.100 max
|
304
|
0.080 max
|
0.75 max
|
2.00 max
|
0.045 max
|
0.030 max
|
18.00-20.00
|
8.00-10.50
|
0.100 max
|
304L
|
0.030 max
|
0.75 max
|
2.00 max
|
0.045 max
|
0.030 max
|
18.00-20.00
|
8.00-10.50
|
0.100 max
|
International standards
ITA
|
USA
|
GER
|
FRA
|
UK
|
RUS
|
CHN
|
JAP
|
|---|---|---|---|---|---|---|---|
X10CrNi18-8
|
302
|
1.4310
|
Z11CN18-08
|
301S21
|
12KH18N9
|
1Cr18Ni9
|
SUS301
|
X5CrNi18-10
|
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
Property
|
Symbol
|
U.o.M.
|
Type
|
Notes
|
Values
|
|---|---|---|---|---|---|
Density
|
d
|
[g/cm3]
|
Physical
|
Room temp.
|
7.95
|
Young's modulus
|
E
|
[GPa]
|
Mechanical
|
-
|
200
|
Specific heat
|
c
|
[J/kg-K]
|
Thermal
|
Room temp.
|
500
|
Coefficient of linear thermal expansion
|
a
|
[10^-6/ºC]
|
Thermal
|
(?T=0-100°C)
|
17.5
|
Thermal conductivity
|
?
|
[W/(m·K)]
|
Thermal
|
Room temp.
|
15.8
|
Electric resistivity
|
?
|
[O*m*10^-9]
|
Electric
|
-
|
710
|
Relative magnetic permeability
|
µ
|
-
|
Magnetic
|
Paramagnetic
|
1.025*
|
Technical data
Property
|
Type
|
U.o.M.
|
Values
|
U.o.M.
|
Values
|
|---|---|---|---|---|---|
Hardness
|
Mechanical
|
[HRC]
|
10 - 25 (1)*
|
[HRC]
|
25 - 39 (2)*
|
Ultimate tensile strength
|
Mechanical
|
[MPa]
|
500 - 1300
|
[psix10^3]
|
72 - 188
|
Service temperature
|
Thermal
|
[ºC]
|
-196 / 700
|
[ºF]
|
-320.8 / 1697
|
Range
Diameters (min/max)
|
U.o.M.
|
Diameters (min/max)
|
U.o.M.
|
Precision Grade (ISO 3290)
|
|---|---|---|---|---|
0.300 - 300.000
|
[mm]
|
1/64 - 12
|
["]
|
**G10-16-20-25-28-40-50-60-100-200-500-1000-2000
|
Corrosion Resistance
|
|---|
Very good corrosion resistance with respect to organic substances, oxidating solutions, foodstuff, sterilizing solutions.
Good resistance with respect to atmospheric corrosion and dyes.
They are subjected to pitting and crevice corrosion in presence of hot chloride solutions and to stress corrosion when temperature exceeds 60°C.
They do not resist to sulfuric acid solutions.
AISI 302 shows slightly best corrosion resistance with respect to AISI 304/304L stainless steels.
|
Notes
Property
|
Description
|
|---|---|
Hardness*
|
Balls can be supplied in the ANNEALED (HRC 10-25) or COLD WORKED (HRC 25-39) conditions.
|
Magnetism
|
Eventual magnetism of AISI 316 balls and in general of all austenitc stainless steels strictly depends by the manufacturing process, specific inquiries for not magnetic balls should priorly reported.
|
Precision Grade**
|
On specifical request and for big quantities, we can supply G10 and G16 precision grade balls. Diameters from 3.000 mm to 1/2".
|