C31600
PRODUCT DESCRIPTION:. Leaded Commercial Bronze (nickel-bearing)
TEMPERS: H02 Half Hard, H04 Hard
SOLIDS: 3/8″ to 2″ O.D.
HEX: 3/8″ to 2″ O.D.
STANDARD LENGTHS: 144″
Typical Uses
BUILDERS HARDWARE: hardware
ELECTRICAL: connectors
FASTENERS: fasteners, nuts, screws
INDUSTRIAL: screw machine parts
C31600 high copper brass alloy is a high copper content brass alloy with a copper content of up to 85-89%. In addition, C31600 alloy also contains 1.5-3% of aluminum, manganese, iron and other elements. The addition of these elements increases the strength and hardness of the alloy while maintaining its good machinability and corrosion resistance.
C31600 alloy has good electrical conductivity, and its electrical conductivity can be as high as 30-34%IACS. The alloy has a density of 8.8 g/cm³, making it slightly lighter than copper. Its thermal conductivity is high, 122 W/mK, which is about 20% higher than ordinary brass. This allows C31600 alloy to maintain good thermal conductivity in high temperature environments and is widely used in the manufacture of thermal components.
C31600 alloy has a tensile strength of 440-570 MPa and a high elongation of 40-50%. This makes it ideal for manufacturing high-strength, highly corrosion-resistant parts. In addition, C31600 alloy has a hardness (HV) of 120-170, which is slightly harder than ordinary brass.
Similar or Equivalent Specification
| CDA | ASTM | SAE | AMS | Federal | Military | Other |
|---|---|---|---|---|---|---|
| C31600 | B140 B140M | MIL-V-18436 |
Chemical Composition
| Cu% | Pb% | Zn% | Fe% | P% | Ni% | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Chemical Composition according to ASTM B140/B140M-12(2017) Note: Cu + Sum of Named Elements, 99.6% min. Single values represent maximums. | |||||||||||
| 87.50- 90.50 | 1.30- 2.50 | Rem. | 0.10 | 0.04- 0.10 | 0.70- 1.20 | ||||||
Machinability
| Copper Alloy UNS No. | Machinability Rating | Density (lb/in3 at 68 °F) |
|---|---|---|
| C31600 | 80 | 0.320 |
Mechanical Properties
C31600
H02 Half Hard
SIZE RANGE: 1/2″ DIAMETER AND UNDER
| Tensile Strength, min | Yield Strength, at 0.5% Extension Under Load, min | Elongation, in 2 in. or 50 mm min | Rockwell “B” Hardness | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical HRB | |
| 50 | 345 | 30 | 205 | 7 | 61 | |
SIZE RANGE: OVER 1/2″ DIAMETER TO 1″ INCLUSIVE
| Tensile Strength, min | Yield Strength, at 0.5% Extension Under Load, min | Elongation, in 2 in. or 50 mm min | Rockwell “B” Hardness | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical HRB | |
| 45 | 310 | 27 | 185 | 10 | 61 | |
SIZE RANGE: OVER 1″ DIAMETER
| Tensile Strength, min | Yield Strength, at 0.5% Extension Under Load, min | Elongation, in 2 in. or 50 mm min | Rockwell “B” Hardness | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical HRB | |
| 40 | 275 | 25 | 170 | 12 | 58 | |
C31600
H04 Hard
SIZE RANGE: 2″ DIAMETER AND UNDER
| Tensile Strength, min | Yield Strength, at 0.5% Extension Under Load, min | Elongation, in 2 in. or 50 mm min | Rockwell “B” Hardness | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical HRB | |
| 60 | 415 | 50 | 345 | 6 | 72 | |
Physical Properties
Physical Properties provided by CDA | |||||||||||
| US Customary | Metric | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Melting Point – Liquidus | 1900 °F | 1038 °C | |||||||||
| Melting Point – Solidus | 1850 °F | 1010 °C | |||||||||
| Density | 0.32 lb/in3 at 68 °F | 8.86 gm/cm3 at 20 °C | |||||||||
| Specific Gravity | 8.86 | 8.86 | |||||||||
| Electrical Conductivity | 32% IACS at 68 °F | 0.187 MegaSiemens/cm at 20 °C | |||||||||
| Thermal Conductivity | 81 Btu/sq ft/ft hr/°F at 68 °F | 140.2 W/m at 20 °C | |||||||||
| Coefficient of Thermal Expansion 68-572 | 10.2 · 10-6 per °F (68-572 °F) | 17.6 · 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 Elasticity in Tension | 17000 ksi | 117212 MPa | |||||||||
Fabrication Properties
Fabrication Properties provided by CDA | |||||||||||
| Technique | Suitability | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Soldering | Excellent | ||||||||||
| Brazing | Good | ||||||||||
| Oxyacetylene Welding | Not Recommended | ||||||||||
| Gas Shielded Arc Welding | Not Recommended | ||||||||||
| Coated Metal Arc Welding | Not Recommended | ||||||||||
| Spot Weld | Not Recommended | ||||||||||
| Seam Weld | Not Recommended | ||||||||||
| Butt Weld | Fair | ||||||||||
| Capacity for Being Cold Worked | Good | ||||||||||
| Capacity for Being Hot Formed | Poor | ||||||||||
| Machinability Rating | 80 | ||||||||||
Thermal Properties
Thermal Properties provided by CDA *Temperature is measured in Fahrenheit. |
