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China Stainless Steel Balls manufacturer

440 C 95X18 Stainless Steel Beads G 25 Diameter 20.638 MM 13/16 Inch Stable

Product Details:
Place of Origin: China
Brand Name: JN
Certification: SGS ISO
Model Number: 20.638 MM or 13/16 Inch
Payment & Shipping Terms:
Minimum Order Quantity: 500kg
Price: Negotiable
Packaging Details: Ploy bag+25kg carton box+1000kg wooden box
Delivery Time: 7-15 days
Payment Terms: T/T, Western Union, MoneyGram,Paypal, L/C, D/A, D/P
Supply Ability: 10 Tons per Month

Detail Information

Product Name: Stainless Steel Bearing Balls Grade: G25
Standard: 440 C 95X18 Hardness: HRC57-65
Feature: Magnetic HS Code: 84829100
High Light:

stainless steel round balls

,

solid metal ball

Product Description

440 C 95X18 Stainless Steel Bearing Balls G 25 Diameter 20.638 MM or 13/16 Inch

 

 

Martensitic hardened stainless steel balls, they feature remarkable hardness, wear resistance,

 

surface finishing, narrow dimensional tolerances. For that reason this type of steel is frequently

 

used in precision devices. Balls are provided in the passivated condition.

 

Chemical Composition

 

%C
%Si
%Mn
%P
%S
%Cr
%Mo
0.95-1.20
1.00 max
1.00 max
0.040 max
0.030 max
16.00-18.00
0.75 max

 

Applications
Precision bearings, anti-friction bearings, special valves, conveyor belts and rollers, ballpoint pens. They are used in foodstuff, medical instruments, quick couplings, recirculating ball bearings, knotting devices, oil refinery devices.
 
International standards
 
ITA
USA
GER
FRA
UK
RUS
CHN
JAP
X 105CrMo17
440C
1.4125
Z100CD17
-
95X18
9Cr18Mo
SUS440C

 

Physical / mechanical / thermal / electric / magnetic properties
 
Property
Symbol
U.o.M.
Type
Notes
Values
Density
δ
[g/cm3]
Physical
Room temp.
7.70
Young's modulus
E
[GPa]
Mechanical
-
210
Specific heat
c
[J/kg-K]
Thermal
Room temp.
450
Coefficient of linear thermal expansion
α
[10^-6/ºC]
Thermal
(ΔT=0-100°C)
10.2
Thermal conductivity
λ
[W/(m·K)]
Thermal
Room temp.
19.6
Electric resistivity
ρ
[Ω*m*10^-9]
Electric
-
680
Relative magnetic permeability
µ
-
Magnetic
Not hardened
> 700
 
Technical data
 
Property
Type
U.o.M.
Values
U.o.M.
Values
Hardness
Mechanical
[HRC]
57 - 65
-
-
Ultimate tensile strength
Mechanical
[MPa]
1900 - 2000
[psix10^3]
275 - 290
Service temperature
Thermal
[ºC]
0 / 400
[ºF]
32 - 752

 

Corrosion Resistance
The material resists to corrosion in contact with freshwater, steam, oil, petrol, alcohol. They are subjected to pitting corrosion in sea water environments. Poor corrosion resistance in acid environments.

 

Feature

 

440C: Martensitic hardened stainless steel balls, they feature remarkable hardness, wear resistance, surface finishing,

 

narrow dimensional tolerances. For that reason this type of steel is frequently used in precision devices.

 

Balls are provided in the passivated condition.

 

 

 

 

 

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