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Different Raw Materials used in Bimetal Bushings
| TYPE SPECIFICATION |
NOMINAL % COMPOSITION |
PROPERTIES | APPLICATION | |
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HF - 2 SAE 792
ISO: Cu Pb 10 Sn 10 |
80.0 Cu 10.0 Sn 10.0 Pb |
High physicals, excellent resistance to pounding and shock, high load capacity, good wear resistance |
Piston pin, steering, track rollers, cylinders, rock shaft, axle bushings, wear plate, high-impact thrust washers (hard shaft desirables) |
| HF - 3 SAE 798 |
84.0 Cu 4.0 Sn 8.0 Pb 4.0 Max. Zn |
Good shock, load capacity & corrosion resistance, somewhat lower physical strength than HF - 2 | General purpose bushing material, spring eye, rocker arm, utility bushings (hard shaft desirables) | |
| HF - 16 SAE 799
ISO: Cu Pb 24 Sn 4 |
72.0 Cu 3.5 Sn 23.0 Pb 3.0 Max. Zn |
Combines good friction, embeddability, compatibility with medium load capacity, will accept higher surface speed and load | Heavy-duty camshaft, electric motor, automatic transmission, hydraulic pump, gear changers | |
| RS-21 Solid Wrough SAE 791 ISO: Cu Sn 5 Zn 4 |
88.0 Cu 4.0 Sn 4.0 Pb 4.0 Zn |
Good fatigue, corrosion resistance, shock and load capacity, for low surface speed | Oscillating components, piston pin, controls, electric motors, some automatic transmission parts | |
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H-35 SAE 480 |
65.0 Cu 35.0 Pb |
Good frictional, lubricity, conformability, more resistant to fatigue than babbitt | Pumps, small electric motors, not for corrosive environment |
| H-35 LT SAE 482 |
65.0 Cu 28.0 Pb 7.0 Sn |
Good fatigue, comformability, and corrosion resistance | Intermediate-duty engines, pumps | |
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H-24 SAE 49 ISO: Cu Pb 24 Sn |
74.5 Cu 24.5 Pb 1.0 Sn |
Very high fatigue and very good corrosion resistance | Heavy-duty engines, pumps, compressors for soft and hard shafts |
| H-116
ISO: Cu Pb 24 Sn 4 |
73.0 Cu 23.75 Pb 35 Sn |
Higher fatigue and very good corrosion resistance | Primarily for heavy-duty engines with top load and durability requirements (hard shafts) | |
| H-14 | 83.0 Cu 14.0 Pb 3.0 Sn |
Highest fatigue with improved corrosion resistance | Highest load capacity for diesel engines (hard shaft) | |
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B-100 Tin Base SAE 12 ISO: Sn Sb 8 Cu 4 |
89.0 Sn 3.5 Cu 7.5 Sb |
Soft, good embeddability, corrosion resistance and lubricity |
Camshafts, low-load engines, motors, pumps, refrig. compressors (hard and soft shafts) |
| L-100 Lead Base SAE 13 ISO: Pb Sb 10 Sn 6 |
84.0 Pb 6.0 Sn 10.0 Sb |
Soft, good embeddability, lubricity, conformability, less corrosion resistance |
Same as above except not used in corrosive environment | |
| L-200 Lead Base (Fortified) SAE 15 ISO: Pb Sb 15 Sn As |
83.0 Pb 1.0 Sn 15.0 Sb 1.0 As |
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| L-300 Lead Base SAE 14 ISO: Pb Sb 15 Sn 10 |
75.0 Pb 10.0 Sn 15.0 Sb |
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A-100 SAE 781 ISO: Al Si 4 Cd |
95.0 Al 4.0 Si 1.0 Cd |
Superior corrosion resistance, good fatigue resistance | Medium-duty engines, automatic transmission bushings-(less overlay)(soft and hard shafts) |
| A-200 SAE 782 ISO: Al Cd 3 Cu Ni |
95.0 Al 3.0 Cd 1.0 Cu 1.0 Ni |
Superior corrosion resistance, good fatigue resistance | Medium-and heavy-duty engines, pumps (soft and hard shafts) | |
| A-250 | 93.5 Al 3.0 Cd 1.0 Cu 1.0 Ni 1.5 Mn |
Superior corrosion resistance, highest fatigue resistance | Primarily for heavy-duty engines with top load and durability requirements (use with hard shafts) | |
| A-300 SAE ISO: Al Sn 6 Cu |
90.75 Al 6.25 Sn 1.50 Si 1.00 Cu 0.50 Ni |
Superior corrosion resistance, good fatigue resistance | Maximum-duty engines, pumps, automatic transissions, piston pins (hard shafts desired) | |
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AT-20+ SAE 783 ISO: Al Sn 20 Cu |
79.0 Al 20.0 Sn 1.0 Cu |
Good fatigue, corrosion and conformability characteristics | Medium-load engines, pumps,compressor, electric motors (hard and soft shafts) |
| AL-6 | 89.5 Al 6.0 Pb 4.0 Si 0.5 Sn |
Good fatigue, corrosion and conformability characteristics, excellent compatibility | Medium-load engines, pumps,compressor, electric motors, automatic transmission (hard and soft shafts) |