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Rulon Bearings

Chemical Lead, UNS L51120
Categories: Metal; Nonferrous Metal; Lead Alloy

Material Notes: Composition listed is for ASTM B 29 and UNS specifications. The residual Cu and Ag are indicative of lead ores from southeast Missouri and have beneficial effects on the strength and corrosion resistance.

Key Words: ASTM B29 B749
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Physical PropertiesMetricEnglishComments
Density 11.34 g/cc0.4097 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 4.0 - 6.04.0 - 6.010 mm ball/100 kg load, 10 sec.
Tensile Strength, Ultimate 16.0 - 19.0 MPa2320 - 2760 psi
Tensile Strength, Yield 6.00 - 8.00 MPa
@Strain 0.2 %
870 - 1160 psi
@Strain 0.2 %
Elongation at Break 30 - 60 %30 - 60 %in 50 mm
Modulus of Elasticity 14.0 GPa2030 ksi
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.0000210 ohm-cm0.0000210 ohm-cm
Magnetic Susceptibility -1.20e-7-1.20e-7cgs/g
Critical Magnetic Field Strength, Oersted 802 - 804802 - 804
Critical Superconducting Temperature 7.19 - 7.202 K7.19 - 7.202 K
 
Thermal PropertiesMetricEnglishComments
Heat of Fusion 24.0 J/g10.3 BTU/lb
CTE, linear 29.1 µm/m-°C
@Temperature 20.0 - 100 °C
16.2 µin/in-°F
@Temperature 68.0 - 212 °F
Specific Heat Capacity 0.129 J/g-°C0.0308 BTU/lb-°F
Thermal Conductivity 33.0 W/m-K229 BTU-in/hr-ft²-°F
Melting Point 328 °C622 °F
 
Optical PropertiesMetricEnglishComments
Emissivity (0-1) 0.630.63
Reflection Coefficient, Visible (0-1) 0.620.62589 nm
 
Component Elements PropertiesMetricEnglishComments
As + Sb + Sn <= 0.002 %<= 0.002 %
Bismuth, Bi <= 0.005 %<= 0.005 %
Copper, Cu 0.04 - 0.08 %0.04 - 0.08 %
Iron, Fe <= 0.002 %<= 0.002 %
Lead, Pb >= 99.90 %>= 99.90 %
Silver, Ag 0.0020 - 0.02 %0.0020 - 0.02 %
Zinc, Zn <= 0.001 %<= 0.001 %

References for this datasheet.

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MLPb57 / 12231

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