With a commitment to innovation and advanced manufacturing techniques, we offer a diverse range of rods & pipe tube that meet the unique requirements of our customers and deliver exceptional performance in various applications.
IS:319 Grade-1
IS:319 Grade-1
IS 319 Grade 1 is the premier free-cutting brass alloy governed by the Bureau of Indian Standards (BIS). Engineered primarily for high-speed automated CNC turning, Swiss-screw machining, and repetitive threading operations, it strikes a balance between rapid chip disposal and mechanical strength. With a strictly controlled lead content (typically $1.0\% - 1.5\%$), it delivers smooth surface finishes, excellent dimensional repeatability, and minimal tool wear while retaining enough ductility for moderate cold-working operations.
Chemical Composition
Elements | Min (%) | Max (%) |
Cu | 56.00 | 59.00 |
Pb | 2.00 | 3.50 |
Fe | – | 0.35 |
Total Others | – | 0.70 |
Zn | Remainder | |
Mechanical Properties According To IS 319 GR I (As Per Temper HB)
| Range (mm) | From |
To |
UTS Min (MPa) |
PS Min |
Elongation Min (%) |
Hardness Min (HV) |
Hardness Max (HV) |
|
| Round (Dia) | 6 |
12 |
405 |
– |
4 |
125 |
155 |
|
12 |
25 |
395 |
– |
6 |
120 |
150 |
||
25 |
50 |
355 |
– |
12 |
110 |
140 |
||
50 |
75 |
325 |
– |
17 |
100 |
130 |
||
| Hex (A/F) | 6 |
12 |
405 |
– |
4 |
125 |
155 |
|
12 |
25 |
395 |
– |
6 |
120 |
150 |
||
25 |
50 |
355 |
– |
12 |
110 |
140 |
||
50 |
70 |
325 |
– |
17 |
100 |
130 |
||
| Square (A/F) | 6 |
12 |
405 |
– |
4 |
125 |
155 |
|
12 |
25 |
395 |
– |
6 |
120 |
150 |
||
25 |
50 |
355 |
– |
12 |
110 |
140 |
||
50 |
60 |
325 |
– |
17 |
100 |
130 |
||
| Rectangle (Thickness) | 6 |
12 |
405 |
– |
4 |
125 |
155 |
|
12 |
25 |
395 |
– |
6 |
120 |
150 |
||
25 |
50 |
355 |
– |
12 |
110 |
140 |
||
PHYSICAL PROPERTIES |
|
| Melting Point – Liquidus°F | 1630 |
| Melting Point – Solidus°F | 1610 |
| Densitylb/cu in. at 68°F | 0.306 |
| Specific Gravity | 8.47 |
| Electrical Conductivity% IACS at 68°F | 28 |
| Thermal ConductivityBtu/ 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 CapacityBtu/ lb /°F at 68°F | 0.09 |
| Modulus of Elasticity in Tensionksi | 14000 |
| Modulus of Rigidityksi | 5300 |
FABRICATION PROPERTIES |
|
| Technique | Suitability |
| Brazing | Good |
| 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 | Poor |
| Capacity for Being Hot Formed | Excellent |
| Machinability Rating | 90 |
Need More Details
Get Latest Company Catalogue
