Comparison of hardness of control group self and heat cure acrylic resin at the interval of 7th day and 15th day of disinfection Mean Rockwell Hardness
Value and SD Cold cure Heat cure acrylic resin acrylic resin Control Group 72.99 97.95 7th day 68.99 96.81 15th day 65.88 93.7 Note: Table made from bar graph.
E-mail: firstname.lastname@example.org Table 1: The electrical resistivity and electrical conductivity of the P-40 inserts Condition of cutting Electrical Electrical tool insert, P-40 resistivity Conductivity ohm-m [(ohm-m).sup.-1] Untreated 2.517*[10.sup.-3] 397.2 Normal cryogenic treated 2.159*[10.sup.-3] 463.15 Table 2: The hot hardness of the P-40 inserts Rockwell Hardness
, HRA Temperature [degrees]C P 40 Untreated P40 Normal cryogenic treated Room 84 84 temperature 100 83 83 200 81.5 81.8 300 78 79.2 400 76 76.8 500 71 73 600 59 63
Readings can be in either Brinell hardness or Rockwell hardness
The bottom third of the bit had a Rockwell hardness
of about 62 [R.SUB.C] and then the rest of the drill bit had an average hardness of about 27 [R.SUB.C].
Customers may ask what the "Rockwell hardness
test" figure means; manufacturers may quote it in their literature.
SATurn allows heavy stock removal on straight and outside diameters (ODs) or special form diameters to grinding machine tolerances on virtually any difficult material or Rockwell hardness
. Additional machine options are the high-speed (30,000rpm) spindle version and the ability to feature dual workheads mounted on an index table, facing 180[degrees] from one another.
Traditional Asian cutlery utilizing this mix typically attains a Rockwell hardness
measurement of 62, which ensures that the knife will maintain its edge for an extended time.
For example, the Rockwell hardness
scales are distinguished by the amount of static force applied (e.g., 100kg for Rockwell B compared to 150kg for Rockwell C); the tip shape (e.g., a spherical tip with a diameter of 1.6 mm for Rockwell B compared to a conical tip that has a spherical apex with a radius of 200 [micro]m for Rockwell C); and the tip material (e.g., steel for Rockwell B compared to diamond for Rockwell C) .
Lone Wolf Knives' Tighe Pan knife by Brian Tighe has a blade built to a Rockwell hardness
of C 59-61.
Surface hardness levels increased from 5456 Rockwell Hardness
after carburization to 59-61 Rockwell Hardness
Other properties of the sheet meeting MedRad's requirements include: tensile elongation of 5,800 psi; modulus of elasticity of 347,000 psi; and Rockwell Hardness
The main blade -- double-edged, precision hollow ground (half- or non-serrated options) with a modified spear point -- is of 154 cm high carbon stainless steel alloy showing a resilient non-reflective finish, carries a Rockwell hardness
of 60 and includes ambidextrous steel milled thumb studs (for a full list of features, visit www.mastersofdefense.com).