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C3602
C3602
JIS C3602 (governed by Japanese Industrial Standard JIS H 3250) is a medium-leaded brass alloy engineered to occupy the middle ground in the Japanese free-machining brass series. Formulated with 59.0% to 63.0% copper and a controlled 1.5% to 2.5% lead content, it balances rapid chip fragmentation during high-speed CNC turning with the mechanical toughness needed for light-to-moderate cold deformation, such as knurling, thread rolling, and staking.
Chemical Composition
Elements | Min (%) | Max (%) |
Cu | 59.00 | 63.00 |
Pb | 1.80 | 3.70 |
Sn+Fe | – | 1.20 |
Fe | – | 0.30 |
Zn | Remainder | |
Mechanical Properties According To H3250 JIS C3602 (As Per Temper BD)
Range |
From |
To |
UTS Min (N/mm²) |
PS Min |
Elongation (%) |
Hardness Min |
Hardness Max |
|
| Round (Dia) | 1.5 |
75 |
315 |
– |
– |
75 |
– |
|
| Hex (A/F) | 3 |
70 |
315 |
– |
– |
75 |
– |
|
| Square (A/F) | 3 |
60 |
315 |
– |
– |
75 |
– |
|
| Rectangle (Thickness) | 3 |
50 |
315 |
– |
– |
75 |
– |
|
PHYSICAL PROPERTIES |
|
| Melting Point – Liquidus°F | 1650 |
| Melting Point – Solidus°F | 1630 |
| Densitylb/cu in. at 68°F | 0.307 |
| Specific Gravity | 8.5 |
| Electrical Conductivity% IACS at 68°F | 26 |
| Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F | 67 |
| Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) | 11.4 |
| Specific Heat CapacityBtu/ lb /°F at 68°F | 0.09 |
| Modulus of Elasticity in Tensionksi | 14000 |
| Modulus of Rigidityksi | 5300 |
FABRICATION PROPERTIES |
|
| 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 | Fair |
| Capacity for Being Hot Formed | Fair |
| Machinability Rating | 100 |
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