Cast C67600
C67600 manganese bronze is a versatile extruded and drawn alloy known for its high strength and good corrosion resistance. In addition, C676 has a fairly low melting temperature and a moderately low heat capacity.
Information
Product description: Manganese Bronze
TEMPERS: H02 Half Hard, H04 Hard
Solids: 3/4" to 3" O.D.
HEX: Consult Mill
Rectangles: Consult Mill
Standard lengths: 144”
Typical uses
Industrial: gate valve stems, valve balls, welding rod
Similar or equivalent specification
| CDA | ASTM | SAE | AMS | Federal | Military | Other |
|---|---|---|---|---|---|---|
| C67600 | B138 B138M | QQ-B-728 |
Chemical composition
| Cu%1 | Pb% | Sn% | Zn% | Fe% | Mn% |
|---|---|---|---|---|---|
| 57.00-60.00 | 0.50-1.00 | 0.50-1.50 | Rem. | 0.40-1.30 | 0.05-0.50 |
Chemical composition according to ASTM B138/B138M-12(2017)
¹Cu value includes Ag
Note:Single values represent maximums.
Machinability
| Copper alloy UNS no. | Machinability rating | Density (lb / in³ at 68 °F) |
|---|---|---|
| C67600 | 60 | 0.302 |
Mechanical properties
Mechanical properties according to ASTM B138/B138M-11(2017)
H02 Half Hard
Size Range: Up to 1" Inclusive
| Tensile strength, min | Yield strength, at 0.5% extension under load, min | Elongation, in 4x Diameter or Thickness of Specimen, min | Rockwell "B" Hardness | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical HRB | |
| 72 | 496 | 36 | 248 | 13 | 90 | |
Size Range: Over 1" to 2 1/2" Inclusive
| Tensile strength, min | Yield strength, at 0.5% extension under load, min | Elongation, in 4x Diameter or Thickness of Specimen, min | Rockwell "B" Hardness | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical HRB | |
| 70 | 483 | 35 | 241 | 15 | 90 | |
Size Range: Over 2 1/2"
| Tensile strength, min | Yield strength, at 0.5% extension under load, min | Elongation, in 4x Diameter or Thickness of Specimen, min | Rockwell "B" Hardness | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical HRB | |
| 65 | 448 | 32 | 221 | 17 | 90 | |
H04 Hard
Size Range: Up to 1" Inclusive
| Tensile strength, min | Yield strength, at 0.5% extension under load, min | Elongation, in 4x Diameter or Thickness of Specimen, min | Rockwell "B" Hardness | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical HRB | |
| 80 | 552 | 56 | 386 | 8 | ||
Size Range: Over 1" to 2 1/2" Inclusive
| Tensile strength, min | Yield strength, at 0.5% extension under load, min | Elongation, in 4x Diameter or Thickness of Specimen, min | Rockwell "B" Hardness | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical HRB | |
| 76 | 524 | 52 | 359 | 10 | ||
Size Range: Over 2 1/2"
| Tensile strength, min | Yield strength, at 0.5% extension under load, min | Elongation, in 4x Diameter or Thickness of Specimen, min | Rockwell "B" Hardness | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical HRB | |
| 68 | 469 | 45 | 310 | 16 | ||
Physical properties
| US Customary | Metric | |
|---|---|---|
| Melting point - liquidus | 1630 °F | 888 °C |
| Melting point - solidus | 1590 °F | 866 °C |
| Density | 0.302 lb/in³ at 68 °F | 8.36 gm/cm³ at 20 °C |
| Specific gravity | 8.36 | 8.36 |
| Electrical conductivity | 24% IACS at 68 °F | 0.14 MegaSiemens/cm at 20 °C |
| Thermal conductivity | 61 Btu/sq ft/ft hr/°F at 68 °F | 105.65 W/m at 20 °C |
| Coefficient of thermal expansion 68-572 | 11.8 · 10-6 per °F (68-572 °F) | 20.4 · 10-6 per °C (20-300 °C) |
| Specific heat capacity | 0.09 Btu/lb/°F at 68 °F | 377.1 J/kg at 20 °C |
| Modulus of elastic in tension | 15000 ksi | 103422 MPa |
| Modulus of Rigidity | 5600 ksi | 38611 MPa |
Fabrication properties
| Technique | Suitability |
|---|---|
| Soldering | Excellent |
| Brazing | Excellent |
| Oxyacetylene welding | Good |
| Gas shielded arc welding | Fair |
| Spot Weld | Good |
| Capacity for Being Cold Worked | Poor |
| Capacity for Being Hot Formed | Excellent |
| Forgeability Rating | 80 |
| Machinability rating | 30 |