Shandong JinNai International Trade Co., Ltd.
Shandong JinNai International Trade Co., Ltd.
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1/8" Inch 3.175MM SUS420 Stainless Steel Bearing Balls G25 For Surgical
High precision grade G25
Finest quality AISI 420 stainless steel
Manufactured in China
Product description
The finest quality 420 Stainless steel produced in accordance with the highest industry standards.
These high precision G25 ball bearings are hot forged from bar stock.
Modern furnaces with precisely controlled atmospheres and temperatures are used for heat treating
to assure uniform hardness and proper microstructure for each Stainless steel ball.
Throughout the manufacturing process, statistical process control assures tolerance accuracy,
fine surface finish and consistent high quality.
Stainless steel balls afford the advantage of maximum hardness combined with corrosion-resisting properties.
This hardness, together with precise geometry and fine surface finish, makes them especially useful for bearing
and Valve applications where severe environmental conditions may occur.
1-Basic Information
| Material | AISI 201,304,316,420,430,440 |
| Size Range | 0.1mm - 200mm |
| Grade | G10 G16 G28 G100 G200 G500 G1000 |
| Corrosion Resistance | Corrosion Resistance |
2-Chemical Composition
| Material | C | Si | Cr | Mn | P | S | Ni |
| 420 | 0.15 % Max | 1% Max | 12%~14% | 1% Max | 0.040% Max | 0.03% Max | - |
| 430 | 0.12% Max | 1% Max | 16%~18% | 1% Max | 0.040% Max | 0.03% Max | - |
| 440 | 0.95%~1.2% | 1% Max | 16%~18% | 1% Max | 0.40% Max | 0.03% Max | - |
3-Mechanical Properties
| Material | Density | Hardness | Tensile Strength | Magnetic |
| 420 | 7.75 g/cm³ | 48~55 HRC | 95,000~250,000 psi | Magnetic |
| 430 | 7.73 g/cm³ | 52~60 HRC | 107,000~140,000 psi | Magnetic |
| 440 | 7.70 g/cm³ | 56~65 HRC | 275,000~285,000 psi |
International Standards
| 201 | 304 | 316 | 420C | 440C | |
| USA | AISI201 | AISI304 | AISI316 | AISI420C | AISI440C |
| JAP | SUS201 | SUS304 | SUS316 | - | SUS440C |
| UK | 201S01 | 304S15 | 316S16 | - | - |
| CHN | 1Cr17Mn6Ni5N | 0Cr18Ni9 | 0Cr17Ni12Mo2 | 4Cr13 | 9Cr18Mo |
| RUS | 14Ch18N4G4L | 08KH18N10 | 08KH16N11M3 | 40Kh13 | 95X18 |
| ITA | - | X5CrNi18-10 | X5CrNiMo1712 | X46Cr13 | X105CrMo17 |
| FRA | Z12CMN17-07Az | Z7CN18-09 | Z6CND17.11 | Z34C14 | Z100CD17 |
| GER | 1.4372 | 1.4301 | 1.4401 | 1.4034 | 1.4125 |
Feature
420C: Martensitic hardened stainless steel balls, they feature good hardness, corrosion resistance,
wear and abrasion resistance. Balls are provided in the passivated condition.
Corrosion Resistance
420C: Good corrosion resistance in industrial atmosphere, freshwater, steam, alcool, ammonium,
several oilfield products and organic compounds, dairy products, mild acid environments.
Fairish in foodstuff and alkaline solutions. Fair in salt atmosphere.
It does not resist in contact with sea water and strong acids (even if diluted).
Application
420C: Special bearings, anti-friction bearings, special pumps, recirculating balls, lighters, pens, automotive seatbelts & components.
