Bolas de acero para herramientas S-2 (ROCKBIT)
Descripción
S-2 Tool Steel Balls are made from S-2 tool steel and specially heat treated to provide excellent hardness and wear resistance combined with toughness and impact resistance to survive extreme shock loads found in the drilling industry.The balls provide the strength and toughness that is required to withstand heavy force and the abrasion of pulverized rock. These balls also have unusually good wear characteristics due to the materials hardening capabilities.
| Material | AISI | Federal | Military | ASTM | UNS | AMS | Military & Gov’t Stds. |
| S-2 Tool | |||||||
| Steel | S-2 | QQ-T-570 | — | ASTM-A681 | T-41902 | — | — |
| AISI Type S-2 Tool Steel Balls | ||
| SIZE RANGE | ¼” (6.35mm) to 1 ½ “ (38.1mm) | |
| GRADES: | G100-G 200 | |
| CHEMICAL COMPOSITION | ||
| CARBON | 0.45% to 0.55% | |
| MANGANESE | 0.30% to 0.50% | |
| MOLYBDENUM | 0.30% to 0.60% | |
| SILICON | 0.90% to 1.10% | |
| PHOSPHOROUS | 0.030% MAX. | |
| SULPHUR | 0.030% MAX. | |
| VANADIUM | 0.050% MAX. | |
| MECHANICAL PROPERTIES | ||
| TENSILE STRENGTH | 310,000 psi | |
| YIELD STRENGTH | 290,000 psi | |
| ELONGATION IN 2 INCHES | 7% | |
| REDUCTION IN AREA | 25% | |
| MODULUS OF ELASTICITY | 30,000,000 psi | |
| DENSITY | 0.283 lbs/ cubic inch | |
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