Detail Information
Product Name:	Nail Polished Steel Ball	Grade:	G10
Standard:	AISI 440C	Hardness:	HRC57-65
Feature:	Magnetic	HS Code:	84829100
High Light:	round steel balls , solid metal ball

Product Description

4.5MM Stainless Steel 440C Bearing Balls For Nail Polished G10 7/64" 2.778 MM

440 Stainless Steel balls are a martenistic-type stainless steel which is used

extensively in steel ball bearing applications that require hardness, dimensional stability,

corrosion resistance and toughness. 440 Stainless Steel is also used for corrosion-resistant ball

and check valves. 440 ball are resistant to corrosion from fresh water, steam, crude oil, gasoline,

perspiration, alcohol, blood and food stuffs. Maximum resistance to corrosion and

tarnishing is only achieved when 440 is fully hardened and surfaces are polished to a high luster.

440 is also magnetic.

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	[Ωm10^-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.

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

4.5MM Stainless Steel Balls 440C Bearing Balls For Nail Polished G10 7/64" 2.778 MM 0

Tag:

Product Details:
Place of Origin:	China
Brand Name:	JN
Certification:	SGS ISO
Model Number:	7/64" 2.778 MM 4.5MM
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

4.5MM Stainless Steel Balls 440C Bearing Balls For Nail Polished G10 7/64" 2.778 MM

round steel balls