Made of fast steel AISI M2, these balls offer excellent toughness and increased resistance to abrasion. Their strength makes it an ideal choice for a variety of applications requiring rigorous precision. Thanks to our four-decade expertise, Marteau- Lemarie guarantees a stock available in France for fast delivery.
Chemical composition of steel ball for AISI M2 utensils
| Element | type | C | If | Mn | S | Cr | Mo | V | W |
|---|---|---|---|---|---|---|---|---|---|
| % | Standards | 0,78-0,88 | 0,20-0,40 | 0,20-0,40 | 0.030 max | 3,75-4,50 | 4,50-5,00 | 1,60-2,20 | 5,00-6,75 |
Physical characteristics of steel ball for AISI M2 utensils
| Ownership | Value | Unit |
|---|---|---|
| Density | 8.16 | g/cm3 |
| Young Module | 218 | GPA |
| Thermal expansion coefficient | 10.6 (DT=0-100°C) | × 10−6 /°C |
| Thermal conductivity | 24 | W/m·K |
| Electrical resistivity | 570 | × 10 - 9 D·m |
| Specific heat | 418 | J/kg·K |
| Relative magnetic permeability | > 500 | — |
| Magnetic behaviour | Ferromagnetic | — |
Hardness and mechanical strength of steel ball for AISI M2 utensils
| Ownership | Value | Unit |
|---|---|---|
| Hardness | 62-66 | HRC |
| Tensile failure load | 2300-2500 | MPa |
| Tensile failure load | 334-362 | psix10^3 |
| Exercise temperatures | 0/400 | ° C |
| Exercise temperatures | 32/752 | °F |
Diameters and grades available for AISI M2 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 M2 utensils
M2 balls have the best corrosion resistance among utensils steels, while remaining a material prone to corrosive attacks by aggressive substances.
International standards for steel ball for AISI M2 utensils
| ITA | USA (AISI) | DIN (GER) | AFNOR (FRA) | UK | GOST (RUS) | GB (CHN) | JIS (JPN) |
|---|---|---|---|---|---|---|---|
| HS 6-5-2 | M2/T11302 | 1.3343 | Z85WDCOV06-05-04-02 | BM2 | R6AM | W6Mo5Cr4V2 | SKH51 |
Applications of steel ball for AISI M2 utensils
Special bearings, recirculation screws.
