Forging Brass, UNS C37700

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Forging Brass, UNS C37700
Categories:	Metal; Nonferrous Metal; Copper Alloy; Brass
Material Notes:	Excellent Forgeability - the standard against which other copper alloys judged. Fair to excellent corrosion resistance. Excellent hot workability. Fabricated by heading and upsetting, hot forging and pressing, hot heading and upsetting, machining. Applications: forgings and pressings of all kinds. Available as rod and shapes.
Key Words:	CZ120, CZ128, ISO CuZn38Pb2, ISO CuZn39Pb2, CEN CW608N, CEN CW612N, FED QQ-B-626 (discontinued), ASTM-B121, ASTM-B36, ASTM-B16/B16M, ASTM-B124
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Physical Properties	Metric	English	Comments

Density	8.44 g/cc	0.305 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell B	74	74	as drawn, extruded, cold drawn 18%, annealed 1h
	29 @Treatment Temp. 650 °C	29 @Treatment Temp. 1200 °F	extruded, cold drawn 18%, annealed 1h
	30 @Treatment Temp. 600 °C	30 @Treatment Temp. 1110 °F	extruded, cold drawn 18%, annealed 1h
	47 @Treatment Temp. 500 °C	47 @Treatment Temp. 932 °F	extruded, cold drawn 18%, annealed 1h
	58 @Treatment Temp. 400 °C	58 @Treatment Temp. 752 °F	extruded, cold drawn 18%, annealed 1h
	73 @Treatment Temp. 300 °C	73 @Treatment Temp. 572 °F	extruded, cold drawn 18%, annealed 1h
	77 @Treatment Temp. 100 °C	77 @Treatment Temp. 212 °F	extruded, cold drawn 18%, annealed 1h
	78 @Treatment Temp. 200 °C	78 @Treatment Temp. 392 °F	extruded, cold drawn 18%, annealed 1h
Hardness, Rockwell F	78	78	M30 temper
Tensile Strength, Ultimate	360 MPa	52200 psi	M30 temper
	460 MPa	66700 psi	as drawn, extruded, cold drawn 18%, annealed 1h
	350 MPa @Treatment Temp. 600 °C	50800 psi @Treatment Temp. 1110 °F	extruded, cold drawn 18%, annealed 1h
	350 MPa @Treatment Temp. 650 °C	50800 psi @Treatment Temp. 1200 °F	extruded, cold drawn 18%, annealed 1h
	360 MPa @Treatment Temp. 500 °C	52200 psi @Treatment Temp. 932 °F	extruded, cold drawn 18%, annealed 1h
	400 MPa @Treatment Temp. 400 °C	58000 psi @Treatment Temp. 752 °F	extruded, cold drawn 18%, annealed 1h
	440 MPa @Treatment Temp. 300 °C	63800 psi @Treatment Temp. 572 °F	extruded, cold drawn 18%, annealed 1h
	460 MPa @Treatment Temp. 100 °C	66700 psi @Treatment Temp. 212 °F	extruded, cold drawn 18%, annealed 1h
	460 MPa @Treatment Temp. 200 °C	66700 psi @Treatment Temp. 392 °F	extruded, cold drawn 18%, annealed 1h
Tensile Strength, Yield	140 MPa @Strain 0.5 %	20300 psi @Strain 0.5 %	M30 temper
	350 MPa @Strain 0.5 %	50800 psi @Strain 0.5 %	as drawn, extruded, cold drawn 18%, annealed 1h
	100 MPa @Strain 0.5 %, Treatment Temp. 600 °C	14500 psi @Strain 0.5 %, Treatment Temp. 1110 °F	extruded, cold drawn 18%, annealed 1h
	100 MPa @Strain 0.5 %, Treatment Temp. 650 °C	14500 psi @Strain 0.5 %, Treatment Temp. 1200 °F	extruded, cold drawn 18%, annealed 1h
	120 MPa @Strain 0.5 %, Treatment Temp. 500 °C	17400 psi @Strain 0.5 %, Treatment Temp. 932 °F	extruded, cold drawn 18%, annealed 1h
	200 MPa @Strain 0.5 %, Treatment Temp. 400 °C	29000 psi @Strain 0.5 %, Treatment Temp. 752 °F	extruded, cold drawn 18%, annealed 1h
	320 MPa @Strain 0.5 %, Treatment Temp. 300 °C	46400 psi @Strain 0.5 %, Treatment Temp. 572 °F	extruded, cold drawn 18%, annealed 1h
	350 MPa @Strain 0.5 %, Treatment Temp. 100 °C	50800 psi @Strain 0.5 %, Treatment Temp. 212 °F	extruded, cold drawn 18%, annealed 1h
	350 MPa @Strain 0.5 %, Treatment Temp. 200 °C	50800 psi @Strain 0.5 %, Treatment Temp. 392 °F	extruded, cold drawn 18%, annealed 1h
Elongation at Break	29 %	29 %	as drawn, extruded, cold drawn 18%, annealed 1h
	45 %	45 %	in 50 mm, M30 temper
	29 % @Treatment Temp. 100 °C	29 % @Treatment Temp. 212 °F	extruded, cold drawn 18%, annealed 1h
	29 % @Treatment Temp. 200 °C	29 % @Treatment Temp. 392 °F	extruded, cold drawn 18%, annealed 1h
	30 % @Treatment Temp. 300 °C	30 % @Treatment Temp. 572 °F	extruded, cold drawn 18%, annealed 1h
	43 % @Treatment Temp. 400 °C	43 % @Treatment Temp. 752 °F	extruded, cold drawn 18%, annealed 1h
	52 % @Treatment Temp. 500 °C	52 % @Treatment Temp. 932 °F	extruded, cold drawn 18%, annealed 1h
	53 % @Treatment Temp. 600 °C	53 % @Treatment Temp. 1110 °F	extruded, cold drawn 18%, annealed 1h
	53 % @Treatment Temp. 650 °C	53 % @Treatment Temp. 1200 °F	extruded, cold drawn 18%, annealed 1h
Reduction of Area	50 %	50 %	as drawn, extruded, cold drawn 18%, annealed 1h
	50 % @Treatment Temp. 100 °C	50 % @Treatment Temp. 212 °F	extruded, cold drawn 18%, annealed 1h
	50 % @Treatment Temp. 200 °C	50 % @Treatment Temp. 392 °F	extruded, cold drawn 18%, annealed 1h
	52 % @Treatment Temp. 300 °C	52 % @Treatment Temp. 572 °F	extruded, cold drawn 18%, annealed 1h
	55 % @Treatment Temp. 400 °C	55 % @Treatment Temp. 752 °F	extruded, cold drawn 18%, annealed 1h
	58 % @Treatment Temp. 500 °C	58 % @Treatment Temp. 932 °F	extruded, cold drawn 18%, annealed 1h
	59 % @Treatment Temp. 650 °C	59 % @Treatment Temp. 1200 °F	extruded, cold drawn 18%, annealed 1h
	60 % @Treatment Temp. 600 °C	60 % @Treatment Temp. 1110 °F	extruded, cold drawn 18%, annealed 1h
Modulus of Elasticity	105 GPa	15200 ksi
Poissons Ratio	0.35	0.35	Calculated
Machinability	80 %	80 %	UNS C36000 (free-cutting brass) = 100%
Forgeability	100 %	100 %
Shear Modulus	39.0 GPa	5660 ksi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000640 ohm-cm @Temperature 20.0 °C	0.00000640 ohm-cm @Temperature 68.0 °F

Thermal Properties	Metric	English	Comments
CTE, linear	20.7 µm/m-°C @Temperature 20.0 - 300 °C	11.5 µin/in-°F @Temperature 68.0 - 572 °F
Specific Heat Capacity	0.380 J/g-°C	0.0908 BTU/lb-°F
Thermal Conductivity	120 W/m-K @Temperature 20.0 °C	833 BTU-in/hr-ft²-°F @Temperature 68.0 °F
Melting Point	880 - 895 °C	1620 - 1640 °F
Solidus	880 °C	1620 °F
Liquidus	895 °C	1640 °F
Annealing Point	427 - 593 °C	800 - 1100 °F

Processing Properties	Metric	English	Comments
Annealing Temperature	425 - 600 °C	797 - 1110 °F
Hot-Working Temperature	650 - 825 °C	1200 - 1520 °F

Component Elements Properties	Metric	English	Comments
Copper, Cu	58 - 62 %	58 - 62 %
Iron, Fe	<= 0.30 %	<= 0.30 %
Lead, Pb	1.5 - 2.5 %	1.5 - 2.5 %
Other, total	<= 0.50 %	<= 0.50 %
Zinc, Zn	39 %	39 %

References for this datasheet.

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Overview of materials for Brass

MC37700b1 / 11253

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