Bolas de acero para herramientas S-2 (ROCKBIT)

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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