These balls are martensitic in nature and they have a good corrosion resistance. As a standard practice at the Tolia group all stainless steel balls are supplied in a passivated condition.
Applications :
- These balls are used in various applications and are used as a cheaper alternative to the AISI 420C material.
Chemical composition
|
Type
|
%C
|
%Si
|
%Mn
|
%P
|
%S
|
%Cr
|
| 420 |
0.16-0.25 |
1.00 max |
1.50 max |
0.040 max |
0.030 max |
12.00-14.00 |
International Standards and material codes
|
USA
|
GER
|
FRA
|
UK
|
RUS
|
CHN
|
JAP
|
| 420A |
1.4021 |
Z 20 C 13 |
420 S 37 |
20 Kh 13 |
2Cr13 |
420J1 |
Technical Properties
|
Property
|
Type
|
U.o.M.
|
Values
|
U.o.M.
|
Values
|
| Hardness |
Mechanical |
[HRC] |
48 - 58 |
- |
- |
| Ultimate tensile strength |
Mechanical |
[MPa] |
1700 - 1900 |
[psix10^3] |
250 - 275 |
Size Range/ Grade selection
| Product |
Size Range |
U.o.M. |
Grade Capabilities |
| Balls |
3.00 mm to 76.20 mm |
[mm] |
GR.20 to GR.2000 as per any international standard. |
| Comparison Chart- Material Corrosion Resistance |
Material
|
CORROSION RESISTANCE |
| Air |
Water |
Food |
Liquor |
Dilute Acid |
Conc. Acid |
Chemical |
| Industrial Atmosphere |
Salt Air |
Wet Steam |
Domestic Water |
Sea Water |
Food Product |
Fruit & Veg. Juice |
Dairy Product |
Hot Sulfate |
Dye |
HCL |
H2SO4 |
HNO3 |
Phosphoric |
H2SO4 |
HNO3 |
Phosphoric |
Ammonia |
Alkaline Salt |
| AISI-E-52100 |
3 |
← |
4 |
4 |
← |
← |
← |
← |
← |
← |
← |
← |
← |
← |
← |
← |
← |
2 |
3 |
| AISI-420 |
2 |
4 |
1 |
1 |
← |
3 |
3 |
2 |
← |
3 |
← |
← |
← |
← |
← |
← |
← |
2 |
3 |
| AISI 420C |
2 |
4 |
1 |
1 |
← |
3 |
3 |
2 |
← |
3 |
← |
← |
← |
← |
← |
← |
← |
2 |
3 |
| AISI 440C |
2 |
3 |
2 |
2 |
← |
2 |
2 |
3 |
← |
4 |
← |
← |
← |
← |
← |
← |
← |
3 |
2 |
| AISI 304/302 |
2 |
1 |
1 |
1 |
1 |
1 |
2 |
2 |
1 |
4 |
2 |
2 |
2 |
2 |
😑 |
2 |
2 |
1 |
1 |
| AISI 316 |
2 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
2 |
4 |
← |
2 |
1 |
2 |
1 |
1 |
1 |
1 |
2 |
| AISI 1085 |
3 |
← |
4 |
4 |
← |
← |
← |
← |
← |
← |
← |
← |
← |
← |
← |
← |
← |
2 |
3 |
1=Excellent 2 = Good 3 = Fair 4 = Poor
← Will not withstand corrosion
😑 Varies
* = satisfactory only over 75% concentration
