100 Pieces 1/4" Bracket Bike Loose Bearing Balls Stainless steel
- 440C stainless steel is wear resistant and can be heat treated to
very high hardness ratings, surpassing the hardness of 440a and
440B stainless steel
- Mirror-like finish provides a bright, reflective appearance
- Grade 10
- Precision tolerance
Type 440C Stainless Steel is widely used in antifriction bearings,
in valves and in many other applications where high hardness and
reasonable corrosion resistance are required. This material is much
more resistant to abrasion and wear than chrome steel. It is a high
alloy, fine grain, through hardening, Martensitic stainless steel.
Because of its high hardness and fine grain structure, it can be
finished to a fine dimensional quality.
This material will harden to 58 rockwell "C" (58 HRC) minimum. The
hardness is measured on parallel ground flats or the reading taken
on the spherical surface is corrected for the curve. The HRC scale
uses 150 kilogram load ( approximately 330 lb. ) applied to a
conical diamond "brale" indenter.
of this material is .277 pounds per cubic inch ( 7.67 g/cm^3).
This material is strongly attracted by a magnetic field.
In the hardened condition, this material can be ground, honed, and
lapped using conventional abrasives. It can be shaped and drilled
using electric discharge machining or ultrasonic cavitation. In the
annealed condition this material can be machined using normal
Because this material has 1% carbon, it is difficult to obtain a
quality weld. It can be resistance welded with difficulty. It can
be soft soldered with a high tin solder using an acid flux. It can
be silver soldered or brazed, but the heat will cause distortion of
the ball and a considerable loss of hardness. For light load
applications, the ball can be attached with an adhesive such as
epoxy. When adhesive bonding is used, an area on the ball should be
roughed up by etching or abrasive blasting.
|AISI 440 & 440C Stainless Steel|
|Materials Standard||Chemmical Composition (%)||Hardness (HRC measured on parallel flats)|
|Size:2.381-25.4mm Precision Grade: G10-G1000|
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.
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
Changzhou Feige Steel Ball Co.,Ltd was founded in year 1989, it’s a
professional manufacturer dedicated in producing precision steel
The company is ISO 9001 and IATF 16949 certified. It covers an area
of 18,000 square meters including office, workshop, warehouse and
laboratory. The sophisticated laboratory equipped with precised,
worldwide respected machines and is managed by properly trained and
qualified personnel. Feige still continues to invest in equipment
to measure and insure that specifications for roundness, surface,
diameter and hardness are achieved.
The factory mainly produce chrome steel ball and stainless steel
ball in accordance with international standard. Besides, it’s
extremely flexible and can accommodate orders for non-standard ball
sizes and diverse materials such as copper and ceramic. The Monthly
production capacity is around 180 tons. These balls are widely used
in precision bearings, bicycle and automotive components, sliding
rails, recirculating ball screws, pumps, sprayers, milling
The company has a professional team dedicated to providing
affordable and reliable quality products to all customers. It’s
welcomed by many customers from Europe, Asia, North America because
of strict quality control, fast delivery and quick response.