AISI 420C Stainless Steel Balls AISI440C Hardened Magnetic 1/4" 6.35MM G100
Brand Name:JN
Certification:SGS ISO
Model Number:1/4" 6.35MM
Minimum Order Quantity:500kg
Delivery Time:7-15 days
Payment Terms:T/T, Western Union, MoneyGram,Paypal, L/C, D/A, D/P
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Jinan Shandong China
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XUESHAN ROAD,LICHENG DISTRICT ,JINAN CITY ,SHANDONG ,CHINA
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AISI 420C AISI440C Hardened Stainless Steel Balls
Stainless steel is an alloy of steel which consists of around 89 percent steel, and 11 percent chromium.
The material was developed to handle conventional steel issues with corrosion, and
delivers much greater resistance to both rust and staining.
It is commonly used in manufacturing cutlery, can be used as a
large-scale cladding for buildings,
and is often used to make medical tools, where avoiding rust and keeping implements clean is a high
priority.
Hardened and Non-Hardened Stainless Steel Balls
Our stainless steel balls come in two varieties: hardened, and non-hardened.
Each variety has its own properties and applications, making it
essential to pick the right one for your specific needs.
Hardened stainless steel balls are generally made using Martensitic
processes, which adds carbon to the material
and makes it tougher and harder wearing. They are also usually provided in a passivated condition,
which adds an extra micro-coating to make them even more durable.
These hardened balls tend to be used as industrial bearings, in specialist pumps, pens, cigarette lighters,
and other situations where friction is involved.
Non-hardened stainless steel ballstend to be made via Austenitic processes, which add nickel or
copper to the material.
These materials are often more workable than hardened versions, but have less corrosion resistance,
and they are commonly found in electronic components.
They also come in Carpenter varieties, with excellent resistance to
sulphuric acid,
as well as Nitronic versions that are resistant to magnetization.
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 | - |
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 | Magnetic |
International Standards
| 420C | 440C | |
| USA | AISI420C | AISI440C |
| JAP | - | SUS440C |
| UK | - | - |
| CHN | 4Cr13 | 9Cr18Mo |
| RUS | 40Kh13 | 95X18 |
| ITA | X46Cr13 | X105CrMo17 |
| FRA | Z34C14 | Z100CD17 |
| GER | 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.
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.
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).
440C: 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.
Application
420C: Special bearings, anti-friction bearings, special pumps,
recirculating balls, lighters, pens, automotive seatbelts &
components.
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.
AISI 420C Stainless Steel Balls AISI440C Hardened Magnetic 1/4" 6.35MM G100
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