AISI 420C STAINLESS STEEL BALLS

Martensitic hardened stainless steel balls, they feature good hardness, corrosion resistance, wear and abrasion resistance. Balls are provided in the passivated condition.
Applications
Special bearings, anti-friction bearings, special pumps, recirculating balls, lighters, pens, automotive seatbelts & components.
Chemical composition
%C
%Si
%Mn
%P
%S
%Cr
-
-
-
-
-
-
0.43-0.50
1.00 max
1.00 max
0.040 max
0.030 max
12.50-14.50
-
-
-
-
-
-
International standards
ITA
USA
GER
FRA
UK
RUS
CHN
JAP
X46Cr13
420C
1.4034
Z 34 C 14
-
40 Kh 13
4Cr13
-
Physical / mechanical / thermal / electric / magnetic properties
Property
Symbol
U.o.M.
Type
Notes
Values
Density
δ
[g/cm3]
Physical
Room temp.
7.75
Young's modulus
E
[GPa]
Mechanical
-
205
Specific heat
c
[J/kg-K]
Thermal
Room temp.
450
Coefficient of linear thermal expansion
α
[10^-6/ºC]
Thermal
(ΔT=0-100°C)
10.4
Thermal conductivity
λ
[W/(m·K)]
Thermal
Room temp.
27.6
Electric resistivity
ρ
[Ω*m*10^-9]
Electric
-
720
Relative magnetic permeability
µ
-
Magnetic
Not hardened
> 600
Technical data
Property
Type
U.o.M.
Values
U.o.M.
Values
Hardness
Mechanical
[HRC]
52 - 60
-
-
Ultimate tensile strength
Mechanical
[MPa]
1700 - 1900
[psix10^3]
250 - 275
Service temperature
Thermal
[ºC]
0 - 400
[ºF]
32 - 752
Range
Diameters (min/max)
U.o.M.
Diameters (min/max)
U.o.M.
Precision grades (ISO 3290-1 / DIN 5401 / AFBMA)
0.300 - 300.000
[mm]
1/64 - 12
["]
See section International Standards: ISO 3290-1 / DIN 5401 / AFBMA
Corrosion Resistance
Good corrosion resistance in industrial atmosphere, freshwater, steam, alcool, ammonium, several oilfield products and organic compounds, dairy products, mild acid environments. Fairish in foodstuff and alkaline solutions. Fair in salt atmosphere. It does not resist in contact with sea water and strong acids (even if diluted).
Revision n.8