EnviroBrass® (SeBiLOY®) III Lead-Free Yellow Brass Casting Alloy, UNS C89550

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EnviroBrass® (SeBiLOY®) III Lead-Free Yellow Brass Casting Alloy, UNS C89550
Categories:	Metal; Nonferrous Metal; Copper Alloy; Brass
Material Notes:	The bismuth and selenium additions take the place of lead in this yellow brass. The melting and machining behavior make this alloy a plausible substitute for C85800 in plumbing applications. Medium section size effect on mechanical properties of castings. Hot tearing in permanent mold castings is much reduced versus leaded yellow brass C85800; no hot tearing was observed for samples with Bi < 1.2%. Does exhibit severe hot tearing when superheat is greater than 234°F (130°C). Information from the Copper Development Association.
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Physical Properties	Original Value	Comments

Density	8.40 g/cc	estimated from C85800

Mechanical Properties	Original Value	Comments
Hardness, Brinell	>= 60 @Load 500 kg	Permanent Mold Cast
	63 @Load 500 kg	Typical, Permanent Mold Cast
Tensile Strength, Ultimate	>= 240 MPa	Permanent Mold Cast
	332 MPa	Typical, Permanent Mold Cast
Tensile Strength, Yield	>= 140 MPa @Strain 0.5 %	Permanent Mold Cast
	200 MPa @Strain 0.5 %	Typical, Permanent Mold Cast
Elongation at Break	>= 5.0 %	Permanent Mold Cast
	8.0 %	Typical, Permanent Mold Cast
Machinability	75 %	at Bi = 0.7%; Permanent Mold Cast; Based on C36000 at 100%
	97 %	at Bi = 1.1%; Permanent Mold Cast; Based on C36000 at 100%

Thermal Properties	Original Value	Comments
Melting Point	860 - 892 °C	short freezing range
Solidus	860 °C
Liquidus	892 °C

Component Elements Properties	Original Value	Comments
Aluminum, Al	0.1 - 0.6 %
Antimony, Sb	<= 0.05 %
Bismuth, Bi	0.6 - 1.2 %
Copper, Cu	58 - 64 %
Iron, Fe	<= 0.5 %
Lead, Pb	<= 0.1 %	not added intentionally; may be specified lower if required
Nickel, Ni	<= 1.0 %	includes Co content
Other, total	<= 0.5 %
Phosphorus, P	<= 0.01 %
Selenium, Se	0.01 - 0.1 %
Silicon, Si	<= 0.25 %
Sulfur, S	<= 0.08 %
Tin, Sn	<= 1.2 %
Zinc, Zn	32 - 38 %

Descriptive Properties
Brazing	Good
Casting Fluidity	25 cm at 100F (56C) superheat	Ragone Test
Drossing	Low
Piping Tendency	High
Porosity after Casting	Lower than C85800
Soldering	Excellent

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