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Rulon Bearings

Nickel-Chromium-silicon Iron, heat-resistant gray iron
Categories: Metal; Ferrous Metal; Cast Iron; Alloy Cast Iron

Material Notes: Austenite matrix structure as cast.

Nicrosilal

Key Words: Heat-resistant gray iron nickel-chromium-silicon iron, Nicrosilal, austenitic
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Physical PropertiesMetricEnglishComments
Density 7.34 - 7.45 g/cc0.265 - 0.269 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 110 - 210110 - 210
Tensile Strength 140 - 310 MPa20300 - 45000 psi
Compressive Strength 480 - 690 MPa69600 - 100000 psi
Charpy Impact, Unnotched 110 - 200 J
@Diameter 30.5 mm
81.1 - 148 ft-lb
@Diameter 1.20 in
Test bar broken on 6 in (152 mm) supports
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.000150 - 0.000170 ohm-cm0.000150 - 0.000170 ohm-cmaverage
 
Thermal PropertiesMetricEnglishComments
CTE, linear 12.6 - 16.2 µm/m-°C
@Temperature 21.0 °C
7.00 - 9.00 µin/in-°F
@Temperature 69.8 °F
Thermal Conductivity 30.0 W/m-K208 BTU-in/hr-ft²-°F
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 1.8 - 2.6 %1.8 - 2.6 %
Chromium, Cr 1.8 - 5.5 %1.8 - 5.5 %
Copper, Cu <= 10 %<= 10 %
Iron, Fe 49 %49 %
Manganese, Mn 0.40 - 1.0 %0.40 - 1.0 %
Molybdenum, Mo <= 1.0 %<= 1.0 %
Nickel, Ni 13 - 43 %13 - 43 %
Phosphorus, P <= 0.10 %<= 0.10 %
Silicon, Si 5.0 - 6.0 %5.0 - 6.0 %
Sulfur, S <= 0.10 %<= 0.10 %
 
Descriptive Properties
Transverse Breaking Load820 to 1130 kgAs-cast 30.5 mm (1.2 in.) diameter bar; 457 mm (18 in.) span
Transverse Deflection7 to 35 mm (0.3 to 1.4 in)As-cast 30.5 mm (1.2 in.) diameter bar; 457 mm (18 in.) span

References for this datasheet.

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