CuZn37-C27200 Yellow Brass "63.5%" (CDA 272) EN equivalent is CuZn37 Typical Uses Fasteners: Fasteners, Fasteners Industrial: Cold Headed Parts, Heat Exchanger Shells, Pump Cylinder Liners Standard Grade ASTM B135 C27200 EN 12449 CuZn37 BS 2871 CZ119 GB/T 1527 H63 Cu 62-65 62-64 61-64 62-65 Pb 0.07 0.1 1.0-2.5 0.08 Al 0.05 Sn 0.1 Fe 0.07 0.1 0.15 Ni 0.3 Zn Balance Balance Balance Balance Total impurities 0.3 0.5 Condition H58 R300 O M H80 R370 M M2 R440 Y2 Y Yield Strength N/mm2 220max 200 min 320 min Tensile Strength N/mm2 54 ksi min 300 300 300 min 66 ksi min 370 380 360 min 440 370 min - 440 min Elongation (%) - 45 - 25 - 10 Hardness Hv5 HR30T 53min - 75 max 60-90 HR30T 70min - 130 min 75-110 - - 85-120 - 115 min Typical  use It has good flaring and bending properties, drawability and suitable for plating. Applicable to heat exchanger, curtain rod, sanitary tube, parts for various apparatuses and machinery, antenna rod, etc. Weight Formula Average Wall: (OD-WT) x WT x 0,0267= Kg/m (all sizes in mm)