W-7
EN 1982 CC493KCuSn7ZnPb
- Wisco’s W-7 is tin bronze also known as red bronze or leaded gunmetal.
- It is the most widely used alloy in the market
- The closest international standards are the ASTM B505 C93200 and RG7 DIN 1705.
- It has an excellent resistance and elongation correlation
- It is a semi-hard material that is resistant to wear, corrosion and sea water. General use.
- Wisco has a large stock of rectangular bars and round solid and hollow bars with immediate availability.
Chemical composition
| % min. | % máx | |
|---|---|---|
| Cua | 81,0 | 85,0b |
| Ni | 2,0 | |
| P | 0,10 | |
| Pb | 5,0 | 8,0 |
| Sn | 6,0b | 8,0 |
| Zn | 2,0 | 5,0 |
| Al | 0,01 | |
| Fe | 0,2 | |
| S | 0,10 | |
| Sb | 0,3 | |
| Si | 0,01 |
a Including nickel
bFor continuous castings and centrifugal castings, the minimum tin content shall be 5,2 % and the
maximum copper content for ingots shall be 86,0 %.
Mechanical properties (Minimum values)
| Moulding process and nomination | Continuous (GC)1 | Centrifugal (GZ) |
|---|---|---|
| Tensile Strength Rm (MPa) |
260 | 260 |
| Yield Point 0,2% Rp0,2 (MPa) |
120 | 120 |
| Elongation 5D A (%) |
12 | 12 |
| HBW (10-1000) | 70 | 70 |
a For pieces with an exterior diameter of ≤ 300 mm. For larger sizes values to be agreed with the order.
Physical properties
| Density kg/dm3 |
8,8 |
|---|---|
| Specific Heat J/(g*K) |
0,356 |
| Thermal Expansion 10-6 K |
18,5 |
| Thermal Conductivity W/(m*K) |
64 |
| Electrical Conductivity MS/m |
7,5 |
Applications
| Product Category | Product | Reason Category | Reason |
|---|---|---|---|
| Automotive | Automotive Fittings | Corrosion Resistance | Corrosion Resistance |
| Automotive Fittings | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Automotive Fittings | Machining Properties | Machinability, Good | |
| Automotive Fittings | Mechanical Properties | Relatively Low Strength | |
| Fasteners | Washers | Corrosion Resistance | Corrosion Resistance |
| Washers | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Washers | Machining Properties | Machinability, Good | |
| Washers | Mechanical Properties | Relatively Low Strength | |
| Industrial | Bearings | Corrosion Resistance | Corrosion Resistance |
| Bearings | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Bearings | Friction & Wear Properties | Anti-Seizing Properties | |
| Bearings | Friction & Wear Properties | Low Coefficient of Friction | |
| Bearings | Friction & Wear Properties | Wear Resistance | |
| Bearings | Machining Properties | Machinability, Good | |
| Bearings | Mechanical Properties | Relatively Low Strength | |
| Bearings for Cranes | Corrosion Resistance | Corrosion Resistance | |
| Bearings for Cranes | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Bearings for Cranes | Friction & Wear Properties | Anti-Seizing Properties | |
| Bearings for Cranes | Friction & Wear Properties | Low Coefficient of Friction | |
| Bearings for Cranes | Friction & Wear Properties | Wear Resistance | |
| Bearings for Cranes | Machining Properties | Machinability, Good | |
| Bearings for Cranes | Mechanical Properties | Relatively Low Strength | |
| Bushings | Corrosion Resistance | Corrosion Resistance | |
| Bushings | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Bushings | Friction & Wear Properties | Low Coefficient of Friction | |
| Bushings | Friction & Wear Properties | Wear Resistance | |
| Bushings | Machining Properties | Machinability, Good | |
| Bushings | Mechanical Properties | Relatively Low Strength | |
| Diesel Engine Wrist Pin Bushings | Corrosion Resistance | Corrosion Resistance | |
| Diesel Engine Wrist Pin Bushings | Corrosion Resistance | Corrosion Resistance por Quimicos Industriales | |
| Diesel Engine Wrist Pin Bushings | Friction & Wear Properties | Anti-Seizing Properties | |
| Diesel Engine Wrist Pin Bushings | Friction & Wear Properties | Low Coefficient of Friction | |
| Diesel Engine Wrist Pin Bushings | Friction & Wear Properties | Wear Resistance | |
| Diesel Engine Wrist Pin Bushings | Machining Properties | Machinability, Good | |
| Diesel Engine Wrist Pin Bushings | Mechanical Properties | Relatively Low Strength | |
| Fittings | Corrosion Resistance | Corrosion Resistance | |
| Fittings | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Fittings | Machining Properties | Machinability, Good | |
| Fittings | Mechanical Properties | Relatively Low Strength | |
| Forging Press Toggle Lever Bearings | Corrosion Resistance | Corrosion Resistance | |
| Forging Press Toggle Lever Bearings | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Forging Press Toggle Lever Bearings | Friction & Wear Properties | Anti-Seizing Properties | |
| Forging Press Toggle Lever Bearings | Friction & Wear Properties | Low Coefficient of Friction | |
| Forging Press Toggle Lever Bearings | Friction & Wear Properties | Wear Resistance | |
| Forging Press Toggle Lever Bearings | Machining Properties | Machinability, Good | |
| Forging Press Toggle Lever Bearings | Mechanical Properties | Relatively Low Strength | |
| Fuel Pump Bushings | Corrosion Resistance | Corrosion Resistance | |
| Fuel Pump Bushings | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Fuel Pump Bushings | Friction & Wear Properties | Anti-Seizing Properties | |
| Fuel Pump Bushings | Friction & Wear Properties | Low Coefficient of Friction | |
| Fuel Pump Bushings | Friction & Wear Properties | Wear Resistance | |
| Fuel Pump Bushings | Machining Properties | Machinability, Good | |
| Fuel Pump Bushings | Mechanical Properties | Relatively Low Strength | |
| General Purpose Bushings | Corrosion Resistance | Corrosion Resistance | |
| General Purpose Bushings | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| General Purpose Bushings | Friction & Wear Properties | Anti-Seizing Properties | |
| General Purpose Bushings | Friction & Wear Properties | Low Coefficient of Friction | |
| General Purpose Bushings | Friction & Wear Properties | Wear Resistance | |
| General Purpose Bushings | Machining Properties | Machinability, Good | |
| General Purpose Bushings | Mechanical Properties | Relatively Low Strength | |
| Hydraulic Press Main Lining | Corrosion Resistance | Corrosion Resistance | |
| Hydraulic Press Main Lining | Corrosion Resistance | Corrosion Resistance por Quimicos Industriales | |
| Hydraulic Press Main Lining | Friction & Wear Properties | Anti-Seizing Properties | |
| Hydraulic Press Main Lining | Friction & Wear Properties | Wear Resistance | |
| Hydraulic Press Main Lining | Machining Properties | Machinability, Good | |
| Hydraulic Press Main Lining | Mechanical Properties | Relatively Low Strength | |
| Hydraulic Press Main Lining | Corrosion Resistance | Corrosion Resistance | |
| Hydraulic Press Main Lining | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Hydraulic Press Main Lining | Machining Properties | Machinability, Good | |
| Hydraulic Press Main Lining | Mechanical Properties | Relatively Low Strength | |
| Hydraulic Press Main Lining | Pressure Tight | Relatively Low Strength | |
| General Purpose Bushings | Corrosion Resistance | Corrosion Resistance | |
| General Purpose Bushings | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| General Purpose Bushings | Friction & Wear Properties | Low Coefficient of Friction | |
| General Purpose Bushings | Friction & Wear Properties | Wear Resistance | |
| General Purpose Bushings | Machining Properties | Machinability, Good | |
| General Purpose Bushings | Mechanical Properties | Relatively Low Strength | |
| Hydraulic Press Stuffing Box | Corrosion Resistance | Corrosion Resistance | |
| Hydraulic Press Stuffing Box | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Hydraulic Press Stuffing Box | Friction & Wear Properties | Anti-Seizing Properties | |
| Hydraulic Press Stuffing Box | Friction & Wear Properties | Low Coefficient of Friction | |
| Hydraulic Press Stuffing Box | Friction & Wear Properties | Wear Resistance | |
| Hydraulic Press Stuffing Box | Machining Properties | Machinability, Good | |
| Hydraulic Press Stuffing Box | Mechanical Properties | Relatively Low Strength | |
| Machine Parts | Conductivity (Thermal) | Thermal Conductivity | |
| Machine Parts | Corrosion Resistance | Corrosion Resistance | |
| Machine Parts | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Machine Parts | Friction & Wear Properties | Anti-Seizing Properties | |
| Machine Parts | Friction & Wear Properties | Wear Resistance | |
| Machine Parts | Machining Properties | Machinability, Good | |
| Machine Parts | Mechanical Properties | Relatively Low Strength | |
| Machine Tool Bearings | Corrosion Resistance | Corrosion Resistance | |
| Machine Tool Bearings | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Machine Tool Bearings | Friction & Wear Properties | Anti-Seizing Properties | |
| Machine Tool Bearings | Friction & Wear Properties | Low Coefficient of Friction | |
| Machine Tool Bearings | Friction & Wear Properties | Wear Resistance | |
| Machine Tool Bearings | Machining Properties | Machinability, Good | |
| Machine Tool Bearings | Mechanical Properties | Relatively Low Strength | |
| Main Spindle Bearings | Corrosion Resistance | Corrosion Resistance | |
| Main Spindle Bearings | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Main Spindle Bearings | Friction & Wear Properties | Anti-Seizing Properties | |
| Main Spindle Bearings | Friction & Wear Properties | Low Coefficient of Friction | |
| Main Spindle Bearings | Friction & Wear Properties | Wear Resistance | |
| Main Spindle Bearings | Machining Properties | Machinability, Good | |
| Main Spindle Bearings | Mechanical Properties | Relatively Low Strength | |
| Pump Fixtures | Corrosion Resistance | Corrosion Resistance | |
| Pump Fixtures | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Pump Fixtures | Machining Properties | Machinability, Good | |
| Pump Fixtures | Mechanical Properties | Relatively Low Strength | |
| Pump Impellers | Corrosion Resistance | Corrosion Resistance | |
| Pump Impellers | Corrosion Resistance | Corrosion Resistance aguas salobres | |
| Pump Impellers | Corrosion Resistance | Corrosion Resistance por Quimicos Industriales | |
| Pump Impellers | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Pump Impellers | Corrosion Resistance | Corrosion Resistance por Productos Petrolíferos | |
| Pump Impellers | Friction & Wear Properties | Wear Resistance | |
| Pump Impellers | Machining Properties | Machinability, Good | |
| Pump Impellers | Mechanical Properties | Relatively Low Strength | |
| Pumps | Corrosion Resistance | Corrosion Resistance | |
| Pumps | Corrosion Resistance | Corrosion Resistance aguas salobres | |
| Pumps | Corrosion Resistance | Corrosion Resistance por Quimicos Industriales | |
| Pumps | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Pumps | Friction & Wear Properties | Wear Resistance | |
| Pumps | Machining Properties | Machinability, Good | |
| Pumps | Mechanical Properties | Relatively Low Strength | |
| Pumps | Pressure Tight | Relatively Low Strength | |
| Roll Neck Bearings | Corrosion Resistance | Corrosion Resistance | |
| Roll Neck Bearings | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Roll Neck Bearings | Friction & Wear Properties | Low Coefficient of Friction | |
| Roll Neck Bearings | Friction & Wear Properties | Wear Resistance | |
| Roll Neck Bearings | Machining Properties | Machinability, Good | |
| Roll Neck Bearings | Mechanical Properties | Relatively Low Strength | |
| Rolling Mill Bearings | Corrosion Resistance | Corrosion Resistance | |
| Rolling Mill Bearings | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Rolling Mill Bearings | Friction & Wear Properties | Low Coefficient of Friction | |
| Rolling Mill Bearings | Friction & Wear Properties | Wear Resistance | |
| Rolling Mill Bearings | Machining Properties | Machinability, Good | |
| Rolling Mill Bearings | Mechanical Properties | Relatively Low Strength | |
| Thrust Washers | Corrosion Resistance | Corrosion Resistance | |
| Thrust Washers | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Thrust Washers | Friction & Wear Properties | Wear Resistance | |
| Thrust Washers | Machining Properties | Machinability, Good | |
| Thrust Washers | Mechanical Properties | Relatively Low Strength | |
| Trunion Bearings | Corrosion Resistance | Corrosion Resistance | |
| Trunion Bearings | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Trunion Bearings | Friction & Wear Properties | Low Coefficient of Friction | |
| Trunion Bearings | Friction & Wear Properties | Wear Resistance | |
| Trunion Bearings | Machining Properties | Machinability, Good | |
| Trunion Bearings | Mechanical Properties | Relatively Low Strength | |
| Water Pump Bushings | Corrosion Resistance | Corrosion Resistance | |
| Water Pump Bushings | Corrosion Resistance | Corrosion Resistance aguas salobres | |
| Water Pump Bushings | Corrosion Resistance | Corrosion Resistance por Quimicos Industriales | |
| Water Pump Bushings | Friction & Wear Properties | Anti-Seizing Properties | |
| Water Pump Bushings | Friction & Wear Properties | Low Coefficient of Friction | |
| Water Pump Bushings | Friction & Wear Properties | Wear Resistance | |
| Water Pump Bushings | Machining Properties | Machinability, Good | |
| Water Pump Bushings | Mechanical Properties | Relatively Low Strength |
Closest international standards
| Area | Standars | Alloy | Code |
|
Status | |
|---|---|---|---|---|---|---|
| Europe | BS 1400 | LG4 | In force | |||
| DIN 1705 | CuSn5ZnPb (Rg7) | Annulled | ||||
| NFA 53707 | UE7 | Annulled | ||||
| USA | ASTM B505 | C93200(SAE 660) | In force | |||
| ASTM B271 | C93200(SAE 660) | In force | ||||
| Australia | AS 1565 | C93200 | In force | |||
| Japan | JIS H5121 | CAC407C | In force | |||
| JIS H5120 | CAC407 | In force | ||||
| ISO | 1338 | CuSn7Pb6Zn4 | Annulled | |||
| Germany | DIN 1705 : 1981 | CuSn7ZnPb | 2.1090 | Rg 7, GC-Rg 7, GZ- Rg 7 | ||
| Australia | AS 1565 : 1996, AS 2738-3 : 1984-00 | C92410A | C92410A | 87/ 7/ 3/ 3 Leaded gunmetal | ||
| Australia | AS 1565 : 1996 | C93200 | C93200 | Leaded gunmetal SAE 660 | ||
|
Denmark |
DS 3001 : 1978 | Rodgods 5426 | 5426 | Rodgods 5426 [ Rg 7 ] | ||
| Spain | UNE 37-103-2 : 1981 | CuSn7Zn4Pb6 | C-3530 | |||
| Europe | EN 1982 : 1998 | CuSn7Zn2Pb3-C | CC492K | |||
| Europe | EN 1982 : 1998 | CuSn7Zn4Pb7-C | CC493K | |||
|
Finland |
SFS 2207 : 1977 | CuSn7Pb6Zn3 | ||||
|
France |
NF A 53-707 : 1987 | CuSn7Pb6Zn4 | ||||
| ISO | ISO 1338 : 1977 | CuSn7Zn3Pb7 | BS ZN 4 // Bronzo allo zinco | |||
| Italy | UNI 7013-7 : 1972 | |||||
| Portugal | NS 16525 : 1977 | CuSn7Pb6Zn3 | Rodmetall Stopelegering | |||
| Portugal | NP 1585 : 1978 | CuSn7Pb6Zn4 | ||||
| UK | BS 1400 : 1985 | CuSn7Pb3Zn3 | LG4 | 87/7/3/3 Leaded gunmetal CuSn7 | ||
|
Switzerland |
VSM 10810-1 : 1973 | CuSn7Pb6Zn4 | Rg 7 | |||
| USA | ASTM B 584 : 1999 | C93200 | C93200 | High-lead tin bronze SAE 660 |
Optional thermal treatments available on clients’ request
- Stabilised