These martensitic stainless steel balls are distinguished by their excellent corrosion resistance, while offering solid mechanical characteristics, particularly in terms of hardness and impact resistance. They are ideal for applications subject to demanding conditions. With over 40 years of expertise, Marteau-Lemarie guarantees immediate availability in our stock in France.
Chemical composition of AISI 431 stainless steel ball
| Element | C | If | Mn | P | S | Cr | Neither |
|---|---|---|---|---|---|---|---|
| % | 0,200 max | 1.00 max | 1.00 max | 0.040 max | 0.030 max | 15,00-17,00 | 1,25-2,50 |
Physical characteristics of AISI 431 stainless steel ball
| Ownership | Value | Unit |
|---|---|---|
| Density | 7.75 | g/cm3 |
| Young Module | 208 | GPA |
| Thermal expansion coefficient | 10.8 (DT=0-100°C) | × 10−6 /°C |
| Thermal conductivity | 25.1 | W/m·K |
| Electrical resistivity | 710 | × 10 - 9 D·m |
| Specific heat | 460 | J/kg·K |
| Relative magnetic permeability | > 700 | — |
| Magnetic behaviour | Not soaked | — |
Hardness and mechanical resistance of AISI 431 stainless steel ball
| Ownership | Value | Unit |
|---|---|---|
| Hardness | 44-54 | HRC |
| Tensile failure load | 1550-1750 | MPa |
| Tensile failure load | 225-253 | psix10^3 |
| Exercise temperatures | 0/400 | ° C |
| Exercise temperatures | 32/752 | °F |
Available diameters and grades for AISI 431 stainless steel ball
| Parameter | Value |
|---|---|
| Minimum diameter | 2.5 mm — 3/32′′′ |
| Maximum diameter | 75 mm — 3′′ |
| Grades available | See International Standards |
| Precision standards | ISO 3290-1 / DIN 5401 / AFBMA |
Corrosion resistance of AISI 431 stainless steel ball
Good corrosion resistance in contact with organic acids, acids and weak bases, alkaline solutions, steam, industrial and marine atmospheres.
International standards for AISI 431 stainless steel ball
| ITA | USA (AISI) | DIN (GER) | AFNOR (FRA) | UK | GOST (RUS) | GB (CHN) | JIS (JPN) |
|---|---|---|---|---|---|---|---|
| X 16 CrNi 1 | 431 | 1.4057 | Z 15 CN 16 02 | 431 S 29 | 20172 | 1Cr17Ni2 | SUS 431 |
Applications of AISI 431 stainless steel ball
Special pumps and valves, jobs in the aeronautics, food, naval sector.
