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Profile
High hardness and dimensional stability make tungsten carbide balls the
preferred choice for precision hydraulic valves, high-load bearings, inertial
navigation systems, ball screws, linear bearings in slideways, gauging and
checking instruments, and meters. Tungsten carbide balls are also used
for ballizing, to work-harden and improve fretting fatigue strength
Tungsten carbide balls are standard for Rockwell testing, and for Brinell
testing of materials in the range of 444-627 HB. Characteristics
Tungsten carbide balls are ideal for applications where extreme hardness
must be accompanied by high resistance to wear and impact. They are
well-suited to elevated temperatures, corrosion, humidity, abrasion,
and poor lubrication conditions. Mechanical Properties
• Ultimate tensile strength 220,000 psi
• Ultimate compressive strength 643,000 psi
• Transverse rupture strength 228,000 psi
• Modulus of elasticity 98,000,000
• Density (approx.) 0.54 lb./in.
• Specific gravity 14.85-15.5
• Electrically conductive slightly magnetic
• Low thermal expansion rate Hardness
Rockwell A 90.5-91.5
Tungsten carbide balls from Hartford are tested using a gage that is
accurate to ±0.0001 (grades 10, 15 and 25) to insure conformance
with ABMA standards, as well as individual customer quality requirements.
Hartford manufactures tungsten carbide balls in 10 standard grades,
in two facilities that allow fast shipment to destinations anywhere in
North America, or Asia. We have substantial custom manufacturing
capacity as well. Let us quote your next application!
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