China Stainless Steel Balls manufacturer

440C Steel Bearing Ball , 12.7 MM Precision Steel Balls For Correction Fluid 1.4125

Product Details:
Place of Origin: China
Brand Name: JN
Certification: SGS ISO
Model Number: 12.7mm 1/2
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: 440C Steel Ball Grade: G500
Application: PrecisionBearings Hardness: HRC57-65
Feature: Magnetic HS Code: 84829100
High Light:

round steel balls

,

solid metal ball

Product Description

440C 12.7 MM Stainless Steel Ball For Correction Fluid 1.4125 Steel Bearing Ball

 

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.

 

Application

440C: 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.

 

 

 

 

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