Rod, wire, pipe, sheet, strip made of CuZn37 (2.0321)
All brasses can be divided into two-component (simple) and multi-component (special). Two-component brass CuZn37 (2.0321) contains about 63% of copper and 34−37% of zinc. Such brass possesses good strength characteristics, corrosion resistance. It is malleable material.
It is used in part of cryogenic techniques; for brazing, gas welding and carbon steel deposit welding. ;
Percentage composition GOST 15527−2004
|Cu||Zn||Pb%||Fe%||P%||Sb% and Bi%|
|62−65%||34,22−37,5%||≤ 0.07%||≤ 0.2%||≤ 0.001%||0,005% and 0,002%|
Two-component brasses mainly consist of copper, zinc and residual elements in small quantity. Level of zinc saturation concentration in copper at low temperature is not more than 39%. It decreases at temperature raise, and at 905 °C, it equals 32%. That is why brass that contains less than 39% of zinc has single-phase zinc solution structure in copper. If to add a bigger zinc quantity into molten copper, zinc will not completely solve. That is why brass will be very hard and brittle after solidification. Duplex alloys have high strength, but low plasticity in comparison to single-phase brasses. If zinc quantity is up to 30%, alloy strength increases without loss of plasticity. Then plasticity decreases a little.
Mechanical properties (t° 20° С)
|Range of products||GOST||
|Cold-rolled soft band||931−90||290−400||38|
|Cold-rolled soft band||931−90||410−570||8|
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