Products
STAINLESS STEEL BALLS
AISI 440-C
This kind of magnetic material offers the advantage of higher through hardness than other stainless steel materials, as well as a considerable resistance to corrosion against water, steam, oil, gasoline (petrol) and alcohol.
All balls can be passivated.
The high hardness, grade of surface finish, and extremely accurate tolerances ensure that this type of steel is suitable material to stainless steel precision ball bearings, oil refinery valves, ball-point pens and other rigid environmental applications.
Diameters: from mm 0,50 to mm 150
Precision grades:
Grades 5-10-16-20-28-40-80-100-200-500-700-1000 as per ISO 3290-DIN 5401-AFBMA
Equivalent materials to international standards:
AISI 440-C-W1.4125-AFN Z100CD17-DIN X105CrMo17-JIS SUS440C
| CHEMICAL COMPOSITION % * | ||||||
| C | Si | Mn | P | S | Cr | Mo |
| 0,95 / 1,20 | 1,00 max | 1,00 max | 0,04 max | 0,02 max | 16.00/ 18,00 | 0,40 / 0,80 |
Average through hardness index: HRC 57-65
Mechanical properties: *
| CRITICAL TENSILE STRENGHT: | 200 kgf/mm2 |
| COMPRESSION STRENGHT: | 193,2 kgf/mm2 |
| MODULUS OF ELASTICITY: | 20,397 kgf/mm2 |
| SPECIFIC WEIGHT: | 7,70 kgf/mm2 |