- CAST PRODUCTS
- LEAD-FREE PRODUCTS
- WROUGHT PRODUCTS
The lead content in these alloys is between 7 percent and 30 percent. High-leaded tin bronzes are free cutting and retain favorable thermal conductivity and good lubricity due to the lead content. The high-leaded tin bronzes are ideal for bearing applications where there could be a loss of the lubrication boundary. These alloys perform excellent in unforgiving environments where foreign matter may be present, such as dirt and other foreign materials. The high-leaded alloys are able to envelope foreign matter due to their malleable nature and, in doing so, protect the wear surface of a mating part such as a shaft.
Product Description: High-Leaded Tin Bronze
Solids: 1/2" to 10" OD
Tubes: 1" to 16" OD
Rectangles: Up to 20"
Standard Lengths: 144"
Shape/Form: semi-finished, mill stock or near-net shapes, anode, bar stock, billet/bloom, squares, hex, plate, profile or structural shape, flats/rectangular bar
Industrial: bearings, railroad engine casings, pumps, industrial centrifuges, machine parts, low friction, moderate pressure bushings, railroad applications, acid resisting applications, backs for lined journal bearings for passenger cars, general service bearings for moderate pressure, wearing material for rod bushings, wearing material for wedges, wearing material for shoes, pump impellers for acid mine water, pump bodies for acid mine water, freight car bearings, backs for lined journal bearings for locomotives
Marine: large bearings for ships
QQ-B-1005, COMP 19
|MIL-B-11553, COMP 19||ANTI-ACID METAL|
1Ni value includes Co. 2For continuous castings, P shall be 1.5%, max.
Note: Cu + Sum of Named Elements, 99.0% min. Single values represent maximums.
|Tensile Strength (min)||Yield Strength (at .5% extension under load min)||Elongation (in 2in. or 50mm min, %)||Brinell Hardness (min)||Remarks|
|Melting Point - Liquidus||1730° F||943° C|
|Melting Point - Solidus||1570° F||854° C|
|Incipient Melting||600° F||316° C|
|Density||0.334 lb/in3 at 68° F||9.25 gm/cm3 at 20° C|
|Electrical Resistivity||91.10 ohms-cmil/ft at 68° F||15.15 microhm-cm at 20° C|
|Electrical Conductivity||11% IACS at 68° F||0.066 MegaSiemens/cm at 20° C|
|Thermal Conductivity||30.20 Btu · ft/(hr · ft2 · °F) at 68° F||52.3 W/m at 20° C|
|Coefficient of Thermal Expansion||10.3 · 10-6 per °F (68°-392° F)||17.8 · 10-6 per °C (20°-200° C)|
|Specific Heat Capacity||0.090 Btu/lb/°F at 68° F||377.1 J/kg at 293° C|
|Modulus of Elasticity in Tension||10500 ksi||72400 MPa|
|Oxyacetylene Welding||Not Recommended|
|Gas Shielded Arc Welding||Not Recommended|
|Coated Metal Arc Welding||Not Recommended|
|Treatment||Temp./Time - US||Temp./Time - SI|
|Hot Works Minimum|
|Hot Works Maximum|