IS 4413
IS 4413, commonly known as yellow brass, boasts a copper content of no less than 62%. Within the realm of cold forming processes, CuZn37 takes the leading role as the primary brass alloy. While certain brasses with reduced zinc content may exhibit improved cold forming properties, CuZn37 reigns supreme as the most prevalent alloy for cold forming applications.
Several compelling factors contribute to its widespread usage. Firstly, its cost-effectiveness cannot be ignored. The lower price of zinc compared to copper makes CuZn37 a financially attractive choice. Additionally, this alloy’s forming characteristics align seamlessly with the requirements of a diverse range of applications. As a result, IS 4413 stands as a reliable and versatile option for fulfilling various cold forming needs.
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
| Cu | 62.00 | 65.00 |
| Pb | – | 0.30 |
| Fe | – | 0.10 |
| Total Others | – | 0.60 |
| Zn | Remainder | |
MECHANICAL PROPERTIES ACCORDING TO IS 4413 (AS PER TEMPER HB)
| Range (mm) | From | To | UTS Min (MPa) | UTS Max (MPa) | UTS Max (MPa) | PS MinElongation Min (%) | Hardness Min | Hardness Max |
| Round (Dia) | 1.5 | 6 | 460 | 620 | – | – | – | – |
| Hex (A/F) | 3 | 6 | 460 | 620 | – | – | – | – |
| Square (A/F) | 3 | 6 | 460 | 620 | – | – | – | – |
| Rectangle (Thickness) | 3 | 6 | 460 | 620 | – | – | – | – |
| PHYSICAL PROPERTIES | |
| Melting Point – Liquidus°F | 1680 |
| Density lb/cu in. at 68°F | 0.305 |
| Specific Gravity | 8.44 |
| Electrical Conductivity % IACS at 68°F | 27.6 |
| Thermal Conductivity Btu/ 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 Capacity Btu/ lb /°F at 68°F | 0.09 |
| Modulus of Elasticity in Tension ksi | 15000 |
| Modulus of Rigidity ksi | 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 | Not Recommended |
| Butt Weld | Good |
| Capacity for Being Cold Worked | Excellent |
| Capacity for Being Hot Formed | Fair |
| Machinability Rating | 35 |
