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Handbook Properties and Selection Nonferrous Alloys and Spl Purpose Mtls (1992) WW Part 6

Tham khảo tài liệu 'handbook properties and selection nonferrous alloys and spl purpose mtls (1992) ww part 6', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Liquidus temperature. 943 C 1730 F Electrical Properties Solidus temperature. 854 C 1570 F Electrical conductivity. Volumetric 11.5 IACS at 20 C 68 F Incipient melting temperature. Pb 315 C 600 F Magnetic Properties Coefficient of linear thermal expansion. 18.5 pm m K 10.3 pin. in. F at 20 to 204 C 68 to 400 F Magnetic permeability. 1.0 Fabrication Characteristics Specific heat. 376 J kg K 0.09 Btu lb F Machinability. 80 of C36000 free-cutting brass Thermal conductivity. 52 W m K 30 Btu ft h F at 20 C 68 F C94300 70Cu-5Sn-25Pb Commercial Names Tensile properties. Typical data for sandcast test bars tensile strength 185 MPa 27 ksi yield strength 90 Common name. High-leaded tin bronze soft bronze 70-525 MPa 13 ksi at 0.5 extension under load elongation 10 in 50 mm 2 in. reduction in area 8 Specifications Compressive properties. Typical compressive strength 76 MPa 11 ksi at permanent set of 0.1 160 MPa 23 ASTM. B 584 B 66 B 271 B 505 B 30 ksi at permanent set of 10 SAE. J462 CA943 Hardness. 48 HB Government. QQ-L-225 Alloy 18 MIL-B-16261 Alloy V Elastic modulus. Tension 72.4 GPa 10.5 X 106 psi Impact strength. Izod 7 J 5 ft lbf Other. Ingot code number 322 Mass Characteristics Chemical Composition Density. 9.29 g cm3 0.336 lb in.3 at 20 C 68 F Composition limits. 68.5 to 73.5 Cu 4.5 to 6.0 Sn 22.0 to 25.0 Pb 0.50 Zn max 0.70 Ni max 0.15 Fe max 0.70 Sb max 0.05 P max 0.08 S max Patternmaker s shrinkage. 11 mm m 1 in. ft Supplementary composition limits. In determining Cu minimum may be calculated as Cu Ni 0.35 Fe max when used for steel-backed bearings. 1.5 P max for continuous castings Thermal Properties Solidus temperature. 900 C 1650 F Incipient melting temperature. Pb 315 C 600 F Applications Specific heat. 376 J kg K 0.09 Btu lb F at 20 C 68 Typical uses. Bearings under light loads and high speed driving boxes railroad bearings F Thermal conductivity. 62.7 W m K 36.2 Btu ft h F at Mechanical Properties 20 C 68 F Electrical Properties Electrical conductivity. .