Description
IS 4170 is a lead-free material that, despite its lack of lead content, is well-suited for machining thanks to its structural composition. It can serve as a cost-effective alternative to traditional lead-containing machining brass, particularly in cases where there are no stringent demands for mechanical properties and corrosion resistance.
Chemical Composition
Mechanical Properties According To IS 4170 (As Per Temper M)
| Range |
From |
To |
UTS Min (Kg/mm²) |
PS Min (Kg/mm²) |
Elongation Min (%) |
Hardness Min |
Hardness Max |
| Round (Dia) |
1.5 |
75 |
35 |
– |
25 |
– |
– |
| Hex (A/F) |
3 |
70 |
35 |
– |
25 |
– |
– |
| Square (A/F) |
3 |
60 |
35 |
– |
25 |
– |
– |
| Rectangle (Thickness) |
3 |
50 |
35 |
– |
25 |
– |
– |
| PHYSICAL PROPERTIES |
| Melting Point – Liquidus°F |
1660 |
| Melting Point – Solidus°F |
1650 |
| Density lb/cu in. at 68°F |
0.303 |
| Specific Gravity |
8.39 |
| Electrical Conductivity % IACS at 68°F |
28 |
| Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F |
71 |
| Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) |
11.6 |
| Specific Heat Capacity Btu/ lb /°F at 68°F |
0.09 |
| Modulus of Elasticity in Tension ksi |
15000 |
| Modulus of Rigidity ksi |
5600 |
| PHYSICAL PROPERTIES |
| Melting Point – Liquidus°F |
1660 |
| Melting Point – Solidus°F |
1650 |
| Density lb/cu in. at 68°F |
0.303 |
| Specific Gravity |
8.39 |
| Electrical Conductivity % IACS at 68°F |
28 |
| Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F |
71 |
| Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) |
11.6 |
| Specific Heat Capacity Btu/ lb /°F at 68°F |
0.09 |
| Modulus of Elasticity in Tension ksi |
15000 |
| Modulus of Rigidity ksi |
5600 |
