B427 C90800 - ASTM B427-2021

Grade	B427 C90800
Corresponding Standard	ASTM B427-2021 Gear Bronze Alloy Castings
Classification	Copper and Copper Alloys

B427 C90800 Chemical Element Composition Content (%)

Component	Fe	Si	P	S	Ni ^②	Cu ^①	Pb	Al	Zn	Sn	Sb
Minimum Value	-	-	-	-	-	85	-	-	-	11	-
Maximum Value	0.15	0.005	0.3	0.05	0.5	89	0.25	0.005	0.25	13	0.2

① Cu+Ni
② Including Co

◎ Cu+Named Elements ≥ 99.4%

B427 C90800 Mechanical Properties

Casting method	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
Static or Centrifugally Chill Cast	≥345	Rp0.5 ≥193	≥12	≥95
Sand cast	≥241	Rp0.5 ≥117	≥10	≥65

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!