Composed of super duplex stainless steel, these balls have a diphasic microstructure of diphasic and ferrite, offering exceptional mechanical resistance and enhanced protection against corrosion, even in chemically aggressive environments. Choose these balls for demanding applications in the chlorinated environment. Marteau-Lemarie, your expert, guarantees a stock available in France and fast delivery.
Chemical composition of super duplex stainless steel ball 2507
| Element | C | If | Mn | P | S | Cr | Neither | N | Mo | Cu |
|---|---|---|---|---|---|---|---|---|---|---|
| % | 0.030 max | 0,80 max | 1.20 max | 0.035 max | 0.020 max | 24,00-26,00 | 6,00-8,00 | 0,240-0,320 | 3,00-5,00 | max. 0.50 |
Physical characteristics of the super duplex stainless steel ball 2507
| Ownership | Value | Unit |
|---|---|---|
| Density | 7.79 | g/cm3 |
| Young Module | 200 | GPA |
| Thermal expansion coefficient | 13 (DT=0-100°C) | × 10−6 /°C |
| Thermal conductivity | 15 | W/m·K |
| Electrical resistivity | 825 | × 10 - 9 D·m |
| Specific heat | 475 | J/kg·K |
| Relative magnetic permeability | 33 | — |
| Magnetic behaviour | Slightly ferromagnetic | — |
Hardness and mechanical resistance of super duplex stainless steel ball 2507
| Ownership | Value | Unit |
|---|---|---|
| Hardness | 25-40 | HRC |
| Tensile failure load | 750-950 | MPa |
| Tensile failure load | 109-137 | psix10^3 |
| Exercise temperatures | -80/300 | ° C |
| Exercise temperatures | -112/572 | °F |
Diameters and grades available for super duplex stainless steel ball 2507
| Parameter | Value |
|---|---|
| Minimum diameter | 1 mm — 3/64′′′ |
| Maximum diameter | 100 mm — 4′′ |
| Grades available | G100-200-300-500-600-700-1000 |
| Precision standards | ISO 3290-1 / DIN 5401 / AFBMA |
Corrosion resistance of super duplex stainless steel ball 2507
Good corrosion resistance by pitting, pore, stress, erosion and under stress in the presence of even hot chlorides. Good resistance to generalized corrosion in contact with hydrochloric acid and diluted sulphuric acid, acetic acid, citric acid, formic acid, oxalic acid.
International standards of super duplex stainless steel ball 2507
| ITA | USA (AISI) | DIN (GER) | AFNOR (FRA) | UK | GOST (RUS) | GB (CHN) | JIS (JPN) |
|---|---|---|---|---|---|---|---|
| X2CrNiMoN25-7-4 | F53/S32750 | 1.4410 | Z3 CN 25.06 Az | 2507 | 08226 | 2507 | 2507 |
Applications of super duplex stainless steel ball 2507
Special pumps and valves for applications in the chemical, energy, marine, petrochemical and gas industries under extremely aggressive conditions.
