AISI M50 balls, made of fast steel, offer excellent hardness and increased wear resistance, even under high temperature conditions. They are ideal for applications requiring exceptional durability and reliable performance. As a leader in precision ball distribution, Marteau- Lemarie guarantees a stock available in France for fast delivery.
Chemical composition of AISI M50 steel ball
| Element | C | If | Mn | P | S | Cr | Neither | Mo | Cu | Co | V | W |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % | 0,80-0,85 | 0.25 max | 0,15-0,35 | 0.015 max | 0.008 max | 4,00-4,25 | 0.15 max | 4,00-4,50 | max 0.10 | 0.25 max | 0,90-1,10 | 0.25 max |
Physical characteristics of AISI M50 steel ball
| Ownership | Value | Unit |
|---|---|---|
| Density | 7.85 | g/cm3 |
| Young Module | 210 | GPA |
| Thermal expansion coefficient | 11.4 (DT=0-100°C) | × 10−6 /°C |
| Thermal conductivity | 25 | W/m·K |
| Electrical resistivity | 600 | × 10 - 9 D·m |
| Specific heat | 460 | J/kg·K |
| Relative magnetic permeability | > 500 | — |
| Magnetic behaviour | Ferromagnetic | — |
Hardness and mechanical resistance of steel ball for AISI M50 utensils
| Ownership | Value | Unit |
|---|---|---|
| Hardness | 60-65 | HRC |
| Tensile failure load | 2500-2700 | MPa |
| Tensile failure load | 363-391 | psix10^3 |
| Exercise temperatures | 0/425 | ° C |
| Exercise temperatures | 32/797 | °F |
Diameters and grades available for AISI M50 steel ball
| Parameter | Value |
|---|---|
| Minimum diameter | 1 mm — 3/64′′′ |
| Maximum diameter | 150 mm — 6′′′ |
| Grades available | See International Standards |
| Precision standards | ISO 3290-1 / DIN 5401 / AFBMA |
Corrosion resistance of steel ball for AISI M50 utensils
Better corrosion resistance compared to steel for S2 utensils due to the presence of a small percentage of Cr.
International standards for steel ball for AISI M50 utensils
| ITA | USA (AISI) | DIN (GER) | AFNOR (FRA) | UK | GOST (RUS) | GB (CHN) | JIS (JPN) |
|---|---|---|---|---|---|---|---|
| X80MoCrV4 4 | M50/T11350 | 1.3551 | Y80DCV42 16 | BM50 | – | Cr4Mo4V | – |
Applications of steel ball for AISI M50 utensils
Special bearings for aeronautics at high temperatures.
