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Rulon Bearings

308 Stainless steel, cold drawn wire, 25% hardened
Categories: Metal; Ferrous Metal; Heat Resisting; Stainless Steel; T 300 Series Stainless Steel
Key Words: UNS S30800, ASTM A167, ASTM A276, ASTM A314, ASTM A473, ASTM A580, SAE J405 (30308), DIN 1.4303, UNI X 8 CrNi 19 10, JIS SUS 305, JIS SUS 305 J1
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Physical PropertiesMetricEnglishComments
Density 8.00 g/cc0.289 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 266
@Diameter 3.20 - 9.53 mm		266
@Diameter 0.126 - 0.375 in		Converted from Rockwell C hardness.
Hardness, Knoop 283
@Diameter 3.20 - 9.53 mm		283
@Diameter 0.126 - 0.375 in		Converted from Rockwell C hardness.
Hardness, Rockwell C 23 - 28
@Diameter 3.20 - 9.53 mm		23 - 28
@Diameter 0.126 - 0.375 in
Hardness, Vickers 275
@Diameter 3.20 - 9.53 mm		275
@Diameter 0.126 - 0.375 in		Converted from Rockwell C hardness.
Tensile Strength, Ultimate  760 - 895 MPa
@Diameter 0.530 - 3.18 mm		110000 - 130000 psi
@Diameter 0.0209 - 0.125 in
 760 - 895 MPa
@Diameter 3.20 - 9.53 mm		110000 - 130000 psi
@Diameter 0.126 - 0.375 in
 895 - 1140 MPa
@Diameter 0.0510 - 0.510 mm		130000 - 165000 psi
@Diameter 0.00201 - 0.0201 in
Tensile Strength, Yield  515 - 655 MPa
@Diameter 3.20 - 9.53 mm		74700 - 95000 psi
@Diameter 0.126 - 0.375 in
 550 - 825 MPa
@Diameter 0.530 - 3.18 mm		79800 - 120000 psi
@Diameter 0.0209 - 0.125 in
 655 - 895 MPa
@Diameter 0.0510 - 0.510 mm		95000 - 130000 psi
@Diameter 0.00201 - 0.0201 in
Elongation at Break  15 - 20 %
@Diameter 0.0510 - 0.510 mm		15 - 20 %
@Diameter 0.00201 - 0.0201 in		in 50 mm
 15 - 25 %
@Diameter 0.530 - 3.18 mm		15 - 25 %
@Diameter 0.0209 - 0.125 in		in 50 mm
 15 - 25 %
@Diameter 3.20 - 9.53 mm		15 - 25 %
@Diameter 0.126 - 0.375 in		in 50 mm
Tensile Modulus 195 GPa28300 ksi
Izod Impact 135 - 165 J99.6 - 122 ft-lb
Charpy Impact >= 135 J>= 99.6 ft-lb
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity  0.0000720 ohm-cm
@Temperature 20.0 °C		0.0000720 ohm-cm
@Temperature 68.0 °F
 0.000116 ohm-cm
@Temperature 650 °C		0.000116 ohm-cm
@Temperature 1200 °F
 
Thermal PropertiesMetricEnglishComments
CTE, linear  17.3 µm/m-°C
@Temperature 0.000 - 100 °C		9.61 µin/in-°F
@Temperature 32.0 - 212 °F
 17.8 µm/m-°C
@Temperature 0.000 - 315 °C		9.89 µin/in-°F
@Temperature 32.0 - 599 °F
 18.4 µm/m-°C
@Temperature 0.000 - 540 °C		10.2 µin/in-°F
@Temperature 32.0 - 1000 °F
 18.7 µm/m-°C
@Temperature 0.000 - 650 °C		10.4 µin/in-°F
@Temperature 32.0 - 1200 °F
Specific Heat Capacity 0.500 J/g-°C
@Temperature 0.000 - 100 °C		0.120 BTU/lb-°F
@Temperature 32.0 - 212 °F
Thermal Conductivity  15.2 W/m-K
@Temperature 0.000 - 100 °C		105 BTU-in/hr-ft²-°F
@Temperature 32.0 - 212 °F
 21.6 W/m-K
@Temperature 500 °C		150 BTU-in/hr-ft²-°F
@Temperature 932 °F
Melting Point 1400 - 1455 °C2550 - 2651 °F
Solidus 1400 °C2550 °F
Liquidus 1455 °C2651 °F
Maximum Service Temperature, Air 925 °C1700 °FIntermittent
 980 °C1800 °FContinuous Service
 
Component Elements PropertiesMetricEnglishComments
Carbon, C <= 0.080 %<= 0.080 %
Chromium, Cr 20 %20 %
Iron, Fe 66 %66 %
Manganese, Mn <= 2.0 %<= 2.0 %
Nickel, Ni 11 %11 %
Phosphorus, P <= 0.045 %<= 0.045 %
Silicon, Si <= 1.0 %<= 1.0 %
Sulfur, S <= 0.030 %<= 0.030 %

References for this datasheet.

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