G10 420C Stainless Steel Ball is one of the different types of stainless steel balls from Condar. Quality is the key point in our production and sales. With more than 20 years of industry experience, we will provide you with better products and related services and become your long-term cooperative steel ball supplier.
G10 420C stainless steel ball is a martensitic steel ball with magnetic properties, high hardness, good rust resistance, and wide application. It can be used as an accessory in many industries.
Main size: 0.35mm-25.4mm
Density: 7.7g/cm3
Main grade: G10;
Rockwell hardness: 420 HRC52-55; 420C HRC54-60;
Main features: high hardness, good rust resistance, low price, and wide application;
Application areas: hardware, bearings, motorcycle accessories, home appliance refrigeration equipment accessories, toy accessories, etc.;
Packaging method: carton + pallet, wooden box packaging, small bag packaging, can be packaged according to customer requirements;
G10 420C stainless steel ball is one of the 420C stainless steel balls that Condar can produce. In addition, we also have many other grades of 420C steel balls. G10 is a relatively high-precision grade with strictly controlled indicators and standards.
Steel ball grade: G10
Ball diameter variation: 0.25μm
Spherical error: 0.25μm
Surface roughness: 0.02μm
Ball batch diameter variation: 0.5μm
Ball gauge value spacing: 1μm
Preferred ball gauge value: -9 - +9
The processing technology of stainless steel balls varies according to the raw materials, steel ball specifications, precision grade and production conditions, but the basic processing process is roughly the same, usually including the following types:
(1) Small steel balls (φ3～10mm)
Cold heading → polishing → heat treatment → surface strengthening treatment → hard grinding → initial grinding → fine grinding 1 → fine grinding 2
(2) Small and medium-sized steel balls (φ10～~16mm)
Cold heading → polishing → heat treatment → surface strengthening treatment → hard grinding → initial grinding → fine grinding 1 → fine grinding 2
(3) Medium and large steel balls (φ16～~28mm)
Cold (hot) heading or hot rolling → annealing (for hot heading or hot rolling) → polishing → heat treatment → surface strengthening treatment → hard grinding → Initial grinding - Fine grinding 1 - Fine grinding 2
(4) Large steel balls (φ28~50mm)
Material heating - Hot upsetting or hot rolling - Annealing - Polishing - Heat treatment - Surface strengthening treatment - Hard grinding - Initial grinding - Fine grinding 1 - Fine grinding 2
(5) Extra large steel balls (φ50～φ80mm)
Material heating - Hot cutting - Heating - Hot upsetting - Annealing - Turning and banding - Polishing - Heat treatment - Hard grinding - Initial grinding - Fine grinding 1 - Fine grinding 2
(6) Extra large steel balls (φ80-φ120mm or more)
Material heating - Hot upsetting (forging) - Annealing - Turning and banding - Soft grinding (single grain) - Heat treatment - Hard grinding (single grain) - Initial grinding
|
C |
0.26-0.35% |
|
Cr |
12.0-14.0% |
|
Si |
1.00% |
|
Mn |
1.0% max. |
|
P |
0.035% |
|
S |
0.030% |
|
Mo |
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