440C Stainless steel ball is a type of modern steel and famous for its high corrosion resistant, wear resistance, strength and hardness qualities among all the stainless alloys, capable of attaining (after heat treatment) the highest hardness (60 HRC). It has good resistance to the atmosphere, fresh water and mild acids. It has best resistance in the hardened, tempered and passivated condition. It allows creating a smooth polished surface and Razor sharp edges. It is being used in rolling element bearings, valve seats, casters, ball bearings and valve parts.
420 is a martensitic stainless steel with 12% Chromium which is sufficient to give good corrosive resistance properties. .It's best corrosive resistance is when hardened and surface is ground or polished. It has good ductility in the annealed condition but can be hardened up to 500HB (highest of the chromium grades) due to its excellent harden-ability, it is capable of getting hardened up to 56 HRC Rockwell or higher. Martensitic Grades are known for high hardness and allowances must be made for poor weld ability and usually allowances for a final harden and temper treatment. 420 steel is magnetic and welding is not recommended. Material will not pass the 72 hours salt bath test.
316 stainless steel is Austenitic stainless steel with features similar to AISI 302/304/304L series, but they can be anti-magnetic and, above all, the addition of molybdenum offers greater chemical resistance, particularly in sulfuric acid concentration. All balls can be annealed and passivated. The most common applications include their use in the chemical, paper and textile industries (valves, pumps and bearings).
Basic Info.Model NO.:1mm 25mm
Original:Changzhou, Jiangsu, China
Material:AISI304 AISI 316
Sizes:1-30mm......
Hardness:HRC25-39
Precision:G100 G200
Checking:100% Sorted
Surface:Bright, Zero Defect
Certification:ISO 9001:2008
Safe:RoHS SGS
Package:10kg of Each Carton
Export Markets:Global
Product Description
Qingdao Fuqin Imp. & Exp. Co., Ltd. It is aprofessional export company for the manufactures.The morther companies are steel ball and roller plants.The steel ball plant was founded in 1998. It is professional ball manufacturer.We have received ISO9001.The roller plant was found in 2000. It is professional roller manufacturer. We have received ISO/TS16949.
Carbon steel balls
Caption:The Applications
Light duty bearing,Conveyer belt,
Bicycle parts,Automobile parts,
Slide bearing,Caster wheels,
Computer peripheral products,
Toys,Metal milling,Hand tools and etc.
Detail:
Low Carbon-AISI 1010-1015
-1mm~30mm
G16~G1000
Chrome steel balls
Caption:The Applications
Bearing/Automotive
Cosmetics/Construction
Body,Jewelry/Heavy Equipment
Hunting cartridge
Detail:
Chrome steel - GCr15/100Cr6/AISI 52100/SUJ-2
Chemical Composition
| Material | C% | Si% | Mn% | Cr% | Cu% |
| 52100 | 0.98~1.10 | 0.15~0.35 | 0.25~0.45 | 1.30~1.60 | |
| GCr15 | 0.95~1.05 | 0.15~0.35 | 0.25~0.45 | 1.40~1.65 | 0.25 |
| GCr15 SiMn | 0.95~1.05 | 0.45~0.75 | 0.95~1.25 | 1.40~1.65 | 0.25 |
| 100Cr6 | 0.93~1.05 | 0.15~0.35 | 0.25~0.45 | 1.35~1.60 | |
| SUJ2 | 0.95 or 1.10 | 0.15 or 0.35 | 0.50 max | 1.30~1.60 |
Stainless steel ball
Caption: The Applications
For 300 series
Trigger sprayers,Bearings,Dispenser valves,
Body jewelry lotion pumps,Aerospace,Quick
Disconnect couplings
For 400 series
Bearing applications,Valve applications,
Locking mechanisms,Fasteners,Quick
Detail:
Stainless steel - AISI 302/304/304L/316/316L
-AISI 420/420C/430/440C
Chermical Composition
| AISI Number | C% | Si% | Mn% | Cr% | Ni% | Mo% | P% | S% | property |
| AISI 304 | 0.07 MAX | 1.00 MAX | 2.00 MAX | 17.0~ 19.0 | 8.0~ 10.5 | 0.045 MAX | 0.03 MAX | Slightly magnetic,flat surface HRC 25min. | |
| AISI 316 | 0.07 MAX | 1.00 MAX | 2.00 MAX | 16.5~ 18.5 | 10.5~ 13.5 | 2.00~ 2.50 | 0.045 MAX | 0.03 MAX | Better corrosion resistance than SS304 specially against Sulfuric acid and ink/bleach/nitric |
| AISI 420 | 0.07~ 0.25 | 1.00 MAX | 1.00 MAX | 12.0~ 14.0 | 0.045 MAX | 0.03 MAX | Magnetic,steel. flat surface HRC 50min, better corrosion resistant | ||
| AISI 430 | 0.08 MAX | 1.00 MAX | 1.00 MAX | 15.5~ 17.5 | 0.045 MAX | 0.03 MAX | Ferritic stainless steel,better corrosion resistant than 3series at higher temperature | ||
| AISI 440 | 0.95~ 1.20 | 1.00 MAX | 1.00 MAX | 16.0~ 18.0 | 0.045 MAX | 0.02 MAX | Martensite,fair corrosion to water,alcohol,oil and food product. |
Plastic balls
Materials and Characteristics
| Item | POM | PA66 | PP | Delrin AF |
| Material | Polyacetal | Nylon 66 | Polypropylene | 20% Teflon+80% Delrin |
| Density(g/cc) | 1.42 | 1.14 | 0.91 | 1.50 |
| Hardness Rockwell R scale | 120 | 110 | 90 | 115 |
| Wear resistant (kgf/cm2) | 0.37 | 0.18 | 385~560 | 0.19 |
| Heat Resistance (C) | 160~170 | 180~230 | 120 | 340 |
Factory tour inspection
PACKAGING
Step 1: Weighing stainless steel balls. Usually the weight is about 10kg.
Step 2: Sealed plastic bags
Step 3: Put sealed plastic bags into small boxes.
Step 4: Each box has the label, including material, Lot No. size, quantity, grade, date......
Step 5: Each box directly put into mooden case.
Service
We would like to offer you services as:
- Instant improvement and design of products
- Quick response to the prices
- Complete inspection report
- Traceable
- Perfect logistic
We hope that our products can offer better quality support for you!