Description
IS 2704 takes the lead as the standard material for machining. These alloys also shine in hot stamping, especially when the forged parts undergo extensive post-forging machining. They are the ideal choice for applications that involve minimal cold working with minimal reduction, such as knurling. Thanks to their remarkable ductility, these materials are exceptionally well-suited for crafting wires, rods and sections.
Chemical Composition
Mechanical Properties According To IS 2704 (As Per Temper HB)
| Range (Imm) |
From |
To |
UTS Min (MPa) |
UTS Max (MPa) |
PS Min |
Elongation Min (%) |
Hardness Min (HV) |
Hardness Max (HV) |
| Round (A/F) |
1.5 |
6 |
400 |
490 |
– |
20 |
131 |
150 |
| Hex (A/F) |
3 |
6 |
400 |
490 |
– |
20 |
131 |
150 |
| Square (A/F) |
3 |
6 |
400 |
490 |
– |
20 |
131 |
150 |
| Rectangle (Thickness) |
6 |
12 |
400 |
490 |
– |
20 |
131 |
150 |
| PHYSICAL PROPERTIES |
| Melting Point – Liquidus°F |
1700 |
| Melting Point – Solidus°F |
1630 |
| Density lb/cu in. at 68°F |
0.306 |
| Specific Gravity |
8.47 |
| Electrical Conductivity % IACS at 68°F |
26 |
| Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F |
67 |
| Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) |
11.3 |
| 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 |
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 |
70 |
