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KN BALL     

CN

EN

China Steel Ball and Leading  Manufacturer Enterprise  

Chrome steel ball, Stainless steel ball, low carbon steel ball, high carbon steel ball

             KN Steel Ball                                                                                                     Production in ISO/TS16949:2009

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Chrome steel   AISI52100 100Cr6  Gcr15  

Bearing steel  balls are hardened and tempered through their entire diameter to insure uniform structure and hardness. Ball hardness is controlled within a range of HRC 60 - 67 as measured on a parallel surface.

CHEMICAL ANALYSIS

MECHANICAL PROPERTIES

Carbon

0.98 to 1.10%

Tensile Strength

325,000 psi

Chromium

1.30 to 1.60%

Yield Strength

295,000 psi

Manganese

0.25 to 0.45%

Elongation in two inches

5%

Silicon

0.15 to 35%

Reduction in area

8%

Phosphorus

0.025% Max

Modulus of elasticity

29,500,000 psi

Sulfur

0.025% Max

Density

.283 lbs./cu. In.

Nickel

0.25% Max

   

Molybdenum

0.10% Max

 

Carbon Steel

Item

C%

Si%

Mn%

P%

S%

Hardness

AISI 1010

0.08~0.13

0.30Max

0.50Max

0.07Max

0.06Max

HRC 58-64

AISI 1015

0.13~0.18

0.10~0.30

0.30~0.60

0.04Max

********

AISI 1045

0.43~0.50

0.10~0.30

0.60~0.90

0.04Max

0.05Max

AISI 1085

0.83~0.88

0.10~0.30

0.30~0.70

0.04Max

0.04Max

Stainless steel  offer excellent corrosion resistance in organic, acid, industrial and marine environments. The non magnetic properties combined with exceptionally high toughness at all temperatures make these steels an excellent selection with many applications. AISI 316 stainless steel offers superior corrosion resistance due to the higher nickel and molybdenum content.

Chemical Composition

 

302

304

316

Carbon

0.15% max.

0.08% max.

0.08% max.

Chromium

17.00 to 19.00%

18.00 to 20.00%

16.00 to 18.00%

Manganese

2.0% max.

2.0% max.

2.0% max.

Silicon

1.0% max.

1.0% max.

1.0% max.

Nickel

8.00 to 10.00%

8.00 to 10.50%

10.00 to 14.00%

Molybdenum

-

-

2.00 to 3.00%


Mechanical Properties

 

302

304

316

Tensile strength

90,000 - 185,000 psi

84,000 - 185,00 psi

84,000 - 185,000 psi

Yield Strength

40,000 - 140,000 psi

42,000 - 140,000 psi

42,000 - 140,000 psi

Elongation in two inches (Annealed)

50%

55%

50%

Modulus of elasticity

28,000,000 psi

28,000,000 psi

28,000,000 psi

Annealed hardness (Rockwell B)

75 - 90

75 - 90

75 - 90

Cold worked hardness (Rockwell C)

25 - 39

25 - 39

25 - 39

Density

.286 lbs./cu.in.

.286 lbs./cu.in.

.288 lbs./cu.in.

440-C Stainless Steel (Martensitic) Balls AISI

440-C stainless steel balls exhibit excellent toughness and hardness properties and offer good corrosion resistance. This material is used extensively in bearing applications where precise tolerances and surface finishes are required.

Chemical Composition

Carbon

.95 to 1.20%

Chromium

16.00 to 18.00%

Manganese

1.0% max.

Silicon

1.0% max.

Molybdenum

.75% max.

Phosphorus

.04% max.

Sulphur

.03% max.



Mechanical Properties
440-C balls are uniformly heat treated in conformance to MIL-H-6875. The balls are hardened and tempered to a Rockwell "C" hardness of 58 to 65.

Tensile strength

285,000 psi

Yield strength

275,000 psi

Elongation in two inches

2%

Reduction in area

10%

Modulus of elasticity

29,000,000 psi

Density

.277 lbs./cu. in.

Material is also customized for user's purpose.

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