Description
Naval Brass C46400 is nominally composed of 60% copper, 39.2% zinc and 0.8% tin. As is typical of brass alloys with the duplex alpha + beta structure, C46400 has good strength and rigidity. By substituting tin for an equal quantity of zinc, a high corrosion resistance to seawater is achieved. The addition of tin also gives the alloy an inherent resistance to dezincification, thereby further inhibiting the impingement by seawater at higher than normal temperatures. The alloy is also noted for its resistance to wear, fatigue, galling, and stress corrosion cracking.
Application
Equivalent Specification
Chemical Composition
| Elements | |||||
|---|---|---|---|---|---|
| Cu(1) | Pb | Sn | Zn | Fe | |
|
(1) Cu + Sum of Named Elements 99.6% min. |
|||||
| Min (%) | 59.0 | 0.50 | |||
| Max (%) | 62.0 | 0.20 | 1.0 | Rem | 0.10 |
Mechanical Properties
| Form | Temper | Temper Code | Tensile Strength (ksi) |
YS-0.5% Ext (ksi) |
Elongation (%) |
Rockwell B scale | Rockwell 30T scale | Shear Strength (ksi) |
Torsion Modulus (ksi) |
Izod (ft-lbs) |
Reduction of Area (%) |
Ultimate Tensile Strength in Shear (ksi) |
Section Size (in) |
Cold Work (%) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| * Measured at room temperature, 68°F (20°C). | ||||||||||||||
| Flat Products | 1/4 Hard | H01 |
70 Typ |
17 Typ |
75 Typ |
68 Typ |
43 Typ |
0.04 | ||||||
| As Hot Rolled | M20 |
55 Typ |
25 Typ |
50 Typ |
55 Typ |
55 Typ |
40 Typ |
1 | ||||||
| Light Anneal | O50 |
60 Typ |
28 Typ |
45 Typ |
58 Typ |
56 Typ |
41 Typ |
0.25 | ||||||
| Light Anneal | O50 |
62 Typ |
30 Typ |
40 Typ |
60 Typ |
57 Typ |
41 Typ |
0.04 | ||||||
| Soft Anneal | O60 |
58 Typ |
25 Typ |
49 Typ |
56 Typ |
55 Typ |
40 Typ |
0.25 | ||||||
| Flat Products & Rod | Soft Anneal | O60 |
58 Typ |
49 Typ |
40 Typ |
0.24 | ||||||||
| Soft Anneal | O60 |
56 Typ |
25 Typ |
47 Typ |
60 Typ | 40 Typ |
2 | |||||||
| Soft Anneal | O60 |
57 Typ |
25 Typ |
47 Typ |
60 Typ | 40 Typ |
1 | |||||||
| Soft Anneal | O60 |
58 Typ |
27 Typ |
45 Typ |
60 Typ | 40 Typ |
0.24 | |||||||
| Flat Products, Rod & Bar | 1/4 Hard | H01 |
69 Typ |
27 Typ |
50 Typ | 43 Typ |
1 | 8 | ||||||
| 1/4 Hard | H01 |
67 Typ |
40 Typ |
35 Typ |
50 Typ | 43 Typ |
2 | 8 | ||||||
| 1/4 Hard | H01 |
70 Typ |
48 Typ |
25 Typ |
50 Typ | 43 Typ |
0.24 | 10 | ||||||
| 1/4 Hard | H01 |
70 Typ |
58 Typ |
17 Typ |
43 Typ |
0.04 | ||||||||
| Light Anneal | O50 |
62 Typ |
30 Typ |
40 Typ |
41 Typ |
0.04 | ||||||||
| Light Anneal | O50 |
63 Typ |
30 Typ |
40 Typ |
55 Typ | 42 Typ |
0.24 | |||||||
| Light Anneal | O50 |
60 Typ |
28 Typ |
45 Typ |
41 Typ |
0.24 | ||||||||
| Light Anneal | O50 |
62 Typ |
28 Typ |
43 Typ |
55 Typ | 42 Typ |
2 | |||||||
| Light Anneal | O50 |
63 Typ |
30 Typ |
40 Typ |
55 Typ | 42 Typ |
1 | |||||||
| Rod | 1/2 Hard | H02 |
75 Typ |
20 Typ |
82 Typ |
44 Typ |
1 | 20 | ||||||
| 1/2 Hard | H02 |
80 Typ |
57 Typ |
20 Typ |
85 Typ |
45 Typ |
0.25 | 20 | ||||||
| 1/4 Hard | H01 |
70 Typ |
48 Typ |
25 Typ |
80 Typ |
43 Typ |
0.25 | 10 | ||||||
| 1/4 Hard | H01 |
69 Typ |
46 Typ |
27 Typ |
78 Typ |
43 Typ |
1 | 8 | ||||||
| 1/4 Hard | H01 |
67 Typ |
40 Typ |
35 Typ |
75 Typ |
43 Typ |
5.7 Typ | 2 | 8 | |||||
| Light Anneal | O50 |
63 Typ |
30 Typ |
40 Typ |
60 Typ |
42 Typ |
1 | |||||||
| Light Anneal | O50 |
62 Typ |
28 Typ |
43 Typ |
60 Typ |
42 Typ |
2 | |||||||
| Light Anneal | O50 |
63 Typ |
30 Typ |
40 Typ |
60 Typ |
42 Typ |
0.25 | |||||||
| Soft Anneal | O60 |
58 Typ |
27 Typ |
45 Typ |
56 Typ |
40 Typ |
0.25 | |||||||
| Soft Anneal | O60 |
56 Typ |
25 Typ |
47 Typ |
55 Typ |
40 Typ |
2 | |||||||
| Soft Anneal | O60 |
57 Typ |
25 Typ |
47 Typ |
55 Typ |
40 Typ |
1 | |||||||
| Rod & Bar | 1/2 Hard | H02 |
75 Typ |
20 Typ |
45 Typ | 44 Typ |
1 | 20 | ||||||
| 1/2 Hard | H02 |
80 Typ |
57 Typ |
20 Typ |
45 Typ | 45 Typ |
0.24 | 20 | ||||||
| Tube | Hard Drawn | H80 |
88 Typ |
18 Typ |
95 Typ |
35 | ||||||||
Physical Properties
| Melting Point - Liquidus°F | 1650 |
|---|---|
| Melting Point - Solidus°F | 1630 |
| Densitylb/cu in. at 68°F | 0.304 |
| Specific Gravity | 8.41 |
| Electrical Conductivity% IACS at 68°F | 26 |
| Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F | 67 |
| Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) | 11.8 |
| Specific Heat CapacityBtu/ lb /°F at 68°F | 0.09 |
| Modulus of Elasticity in Tensionksi | 15000 |
| Modulus of Rigidityksi | 5600 |
Fabrication Properties
| Technique | Suitability |
|---|---|
| Soldering | Excellent |
| Brazing | Excellent |
| Oxyacetylene Welding | Good |
| Gas Shielded Arc Welding | Fair |
| Coated Metal Arc Welding | Not Recommended |
| Spot Weld | Good |
| Seam Weld | Fair |
| Butt Weld | Good |
| Capacity for Being Cold Worked | Fair |
| Capacity for Being Hot Formed | Excellent |
| Forgeability Rating | 90 |
| Machinability Rating | 30 |
Thermal Properties
| Treatment | Minimum* | Maximum* | ||
|---|---|---|---|---|
| * Temperature is measured in Fahrenheit. | ||||
| Annealing | 800 | 1100 | ||
| Hot Treatment | 1200 | 1500 | ||
