Made of low alloy carbon steel and fully tempered, these balls are distinguished by their remarkable toughness and their increased resistance to wear and impact. They are particularly suitable for demanding applications such as ground perforation. As a specialist for 40 years, Marteau- Lemarie offers these products in stock in France, guaranteeing fast delivery.
Chemical composition of the steel ball S-2 tool steel shock resisting (rockbit)
| Element | C | If | Mn | P | S | Mo | V |
|---|---|---|---|---|---|---|---|
| % | 0,40-0,55 | 0,90-1,20 | 0,30-0,50 | 0.030 max | 0.030 max | 0,30-0,60 | max. 0.50 |
Physical characteristics of the steel ball S-2 tool steel shock resisting (rockbit)
| Ownership | Value | Unit |
|---|---|---|
| Density | 7.72 | g/cm3 |
| Young Module | 200 | GPA |
| Thermal expansion coefficient | 10.8 (DT=0-100°C) | × 10−6 /°C |
| Thermal conductivity | 19 | W/m·K |
| Electrical resistivity | 165 | × 10 - 9 D·m |
| Specific heat | 468 | J/kg·K |
| Relative magnetic permeability | > 500 | — |
| Magnetic behaviour | Ferromagnetic | — |
Hardness and mechanical strength of S-2 steel tool steel shock resisting (rockbit)
| Ownership | Value | Unit |
|---|---|---|
| Hardness | 54-63 | HRC |
| Tensile failure load | 2100-2200 | MPa |
| Tensile failure load | 305-320 | psix10^3 |
| Exercise temperatures | -40/500 | ° C |
| Exercise temperatures | -40/932 | °F |
Available diameters and grades for steel ball S-2 tool steel shock resisting (rockbit)
| Parameter | Value |
|---|---|
| Minimum diameter | 4.5 mm — 3/16′′′ |
| Maximum diameter | 75 mm — 3′′ |
| Grades available | See International Standards |
| Precision standards | ISO 3290-1 / DIN 5401 / AFBMA |
Corrosion resistance of steel ball S-2 tool steel shock resisting (rockbit)
Good resistance in alkaline solutions, good enough in contact with salts or industrial atmospheres, low in contact with water or water vapour, is not resistant to contact with acidic substances.
International Standards for Steel Ball S-2 tool steel shock resisting (rockbit)
| ITA | USA (AISI) | DIN (GER) | AFNOR (FRA) | UK | GOST (RUS) | GB (CHN) | JIS (JPN) |
|---|---|---|---|---|---|---|---|
| – | T41902 | – | – | – | Si-Mo | 55SiMoVA | – |
Applications of steel ball S-2 tool steel shock resisting (rockbit)
Perforations of oil wells and wells in general, devices for offshore oil perforation.
