IS 319 / 89 - GRADE 1
IS 319 Free Cutting Grade I is the standard grade across the Asian Sub continent for Free Machining Brass. Commonly known as CW614N in Europe, it is the widely used owing to its suitability for high speed machining operations and also for manufacture of complex parts. The ease of brazing/soldering, high corrosion resistance combined with its good strength and a machinability rating of 100% makes it an ideal choice of application in wide range of brass components throughout the industry
Equivalent Specifications:
CZ121 |
CW614N |
CuZn39PB3 |
BS2874 |
BS249 |
Nominal Composition:
Copper |
56 to 58 % |
Lead |
2 to 3.50 % |
Iron |
0.3% Max |
Zinc |
Balance |
Other Impurities excel Fe. |
0.75% Max |
Key Features:
» Machinability rating of 100%.
» Excellent capacity for hot forming.
» Good Corrosion resistance.
» Excellent suitability for Brazing and Soldering.
Yield Stress |
150 MPa Min. |
Tensile Strength |
380 MPa Min. |
Hardness Brinell |
90 to 160 HB |
Elongation |
18 Min. |
Key Features:
IS 319- I/ CW614N/ CZ 121 finds its use in a wide variety of high speed machined components,
architectural products, hinges, locks, butts, screws, nuts and bolts.
IS 319 / 89 - GRADE 2
IS 319 Grade 2 is commonly known as UNS C36000 or CDA360. When machinability is the prime consideration this alloy stands out as a preferred choice. It stands out to be the most economical material for tapping, threading, and milling or turning primarily due to presence of 3% Lead in the material. It has excellent cutting properties with long tool life and excellent surface finish.
Equivalent Specifications:
ASTM B16 |
UNS C36000 |
CuZn36Pb3 |
CW603N |
Nominal Composition:
Copper |
60 to 63 % |
Lead |
2.5 to 3.70 % |
Iron |
0.35% Max |
Zinc |
Balance |
Other Impurities excel Fe. |
0.5% Max |
Key Features:
» Excellent for soft soldering and Brazing
» Good Corrosion resistance.
» Excellent Cutting properties with good machinability.
Yield Stress |
150 MPa Min. |
Tensile Strength |
325 MPa Min. |
Hardness Brinell |
90 to 160 HB |
Elongation |
15 Min. |
Key Features:
Typical applications includes gears, pinions, plumbing ware fittings, adapters, valves and screw machined products.IS 319 / 89 - GRADE 3
IS 319 Grade III has almost the same chemical properties as UNS C36000 but with a lesser percentage of Lead. As compared to the other two grades, the capacity for being cold work for this grade is Fair. It is ideal for Hot formation and has excellent machinability.
Equivalent Specifications:
ASTM B16 |
UNS C36000 |
CuZn36Pb3 |
CW603N |
Nominal Composition:
Copper |
60 to 63 % |
Lead |
0.50 to 1.50 % |
Iron |
0.2% Max |
Zinc |
Balance |
Other Impurities excel Fe. |
0.5% Max |
Yield Stress |
150 MPa Min. |
Tensile Strength |
285 MPa Min. |
Hardness Brinell |
90 to 160 HB |
Elongation |
10 Min. |