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Available only in german language |
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Sturm Präzision GmbH
Hochsträß 3
78727 Oberndorf
Germany
Phone: +49 (0)7423-86930
info@sturm-praezision.de |
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Balls
| We almost can supply all kinds and sizes of Balls. |
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| From low quantities up to big quantities and even only one piece, everything is possible. |
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| Supplyable Balls from our assortment ... |
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| Material Nr. 1.3505. AISI 521000. 100Cr6. |
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| This is an oil hardening steel which is universally used by the ball and roller bearing industry. The steel has high hardness and good resistance to deformation with excellent wear resistance. Through hardened. |
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| Hardness: |
60~66 HRC |
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| Size Range: |
Diameter 0,50mm until 100mm |
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| Standard Grades: |
G20, G28, G100, G500, G1000 |
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| Mechanical Properties: |
Tensile Strenght 228kgf/mm2
Yield Strenght 207kgf/mm2
Modulus of Elasticity 20748,6 kgf/mm2
Density 7,83 gf/cm3
Max operating temperature 900°F/468°C |
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| Composition: |
C 0,95~1,1%. Cr 1,30~1,60%. Mn 0,25~0,50%. Si 0,15~35%.
P max.0,03%. Sulphur max.0,025%. |
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| PDF-Download: |
Degree and form accuracy DIN 5401 |
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| AISI 420 (Martensitic) |
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| Balls of this material are used in applications where the more rigid corrosion resistance requirement can be relaxed. Fair resistance to fresh water, steam, oil, gasoline, blood, perspiration, alcohol and foodstuffs. Will not pass 40 hours salt spray test. |
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| Hardness: |
52 ~ 55HRC |
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| Size Range: |
Diameter 1mm until 100mm |
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| Standard Grades: |
G28, G100, G500, G1000 |
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| Mechanical Properties: |
Tensile Strenght 65 kg/cm2 |
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| Composition: |
C 0,28~0,36%. Cr 12~14%. Si max.0,8%. Mn max.1%. |
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| AISI440 (Martensitic) |
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| These balls give maximum hardness with good corrosion resistance to fresh water, steam, crude oil, gasoline, alcohol, blood, perspiration and foodstuff. In addition this material is ferro-magnetic and makes a fair permanent magnet. |
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| Hardness: |
58 ~ 65HRC |
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| Size Range: |
Diameter 2mm until 100mm |
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| Standard Grades: |
G20, G28, G100, G500 |
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| Mechanical Properties: |
Tensile Strenght 200 kgf/mm2
Yield Strenght 193,2 kgf/mm2
Modulus of Elasticity 20397 kg/mm2
Density 7,70 gf/cm3 |
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| Composition: |
C 0,95 ~ 1,20%. Cr 16 ~ 18%. Si 1%.
Mn max.1%. P 0,04%. S 0,03%. Mo 0,075%. |
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| Material Sandvik H6N, ISO K20. |
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| These materials have a unique combination of properties of high compressive strength, hardness and resistance to wear and an ability to withstand shock and impact. Typical applications are valves, flowmeters, ball screws, ball pens, and linear bearings. |
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| Hardness: |
90,5 ~ 91,5 Hra |
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| Size Range: |
Diameter 2mm until 50mm |
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| Standard Grade: |
G20 |
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| Mechanical Properties: |
Transverse Rupture Stenght MNm2 2600.
Compressive Strenght MNm2 6870.
Modulus of Elasticity GNm2 830.
Density 14,968/cm3. |
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| Composition: |
Tungsten Carbide 94%. Cobalt 6%. |
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| Ceramic ball silicon nitride |
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| Material Si3N4 |
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| Material suitable for very high loads, high speeds, high temperatures and long life. The density of 3.2grams per cc is outstanding, being 40% of the weight of normal steels. Also no lubrication is required. Possible application: nonmagnetic bearings, valves. |
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| Hardness: |
78 HRC |
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| Size Range: |
Diameter 2mm untill 20mm |
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| Standard Grades: |
G10, G16, G20, G28 |
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| Mechanical Properties: |
Density 3.2gram per cc.
Maximum working temperature 1100°C. |
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| We certainly have also your desired product in the assortment |
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| Caused by different sizes and variations we cannot introduce our whole assortment on our Internet pages. So if you miss your desired product, please send us an inquiry by email. We certainly can help you ... |
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