EnviroBrass® (SeBiLOY®) II Lead-Free Casting Alloy, UNS C89520

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EnviroBrass® (SeBiLOY®) II Lead-Free Casting Alloy, UNS C89520
Categories:	Metal; Nonferrous Metal; Copper Alloy; Brass
Material Notes:	The bismuth and selenium additions take the place of lead in this red brass. The melting and machining behavior make this alloy a plausible substitute for C83600 and C84400 in plumbing applications. Small section size effect on mechanical properties of castings. Hot tearing at abrupt section changes is much reduced versus leaded red brasses. Information from the Copper Development Association.
Key Words:	ASTM B 30 and B 584
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Physical Properties	Original Value	Comments

Density	8.80 g/cc	estimated from C83600
Porosity	0.4 %	Minimal porosity

Mechanical Properties	Original Value	Comments
Hardness, Brinell	>= 68 @Load 500 kg	Sand Cast
	73 @Load 500 kg	Typical, Sand Cast
Tensile Strength, Ultimate	>= 176 MPa	Sand Cast
	215 MPa	Typical, Sand Cast
Tensile Strength, Yield	>= 121 MPa @Strain 0.5 %	Sand Cast
	145 MPa @Strain 0.5 %	Typical, Sand Cast
Elongation at Break	>= 6.0 %	Sand Cast
	10 %	Typical, Sand Cast
Machinability	85 %	Based on C36000 at 100%

Thermal Properties	Original Value	Comments
Melting Point	809 - 1010 °C	long freezing range
Solidus	809 °C
Liquidus	1010 °C
Shrinkage	1.9 - 3.6 %	upon casting

Component Elements Properties	Original Value	Comments
Aluminum, Al	<= 0.005 %
Antimony, Sb	<= 0.25 %
Bismuth, Bi	1.6 - 2.2 %	Bi:Se ratio > 2:1
Copper, Cu	85 - 87 %
Iron, Fe	<= 0.2 %
Lead, Pb	<= 0.25 %	not added intentionally; may be specified lower if required
Nickel, Ni	<= 1.0 %	includes Co content
Other, total	<= 0.5 %
Phosphorus, P	<= 0.05 %
Selenium, Se	0.8 - 1.1 %
Silicon, Si	<= 0.005 %
Sulfur, S	<= 0.08 %
Tin, Sn	5.0 - 6.0 %
Zinc, Zn	4.0 - 6.0 %

Descriptive Properties
Brazing	Good
Casting Fluidity	25 cm at 100F (56C) superheat	Ragone Test
Drossing	Low
Soldering	Excellent

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NSEBIL901 / 147812

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