United Cast Bar Unibar 300 Continuously Cast Iron

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United Cast Bar Unibar 300 Continuously Cast Iron
Categories:	Metal; Ferrous Metal; Cast Iron; Gray Cast Iron
Material Notes:	Unibar 300 is alloyed to achieve the properties, giving excellent wear resistance, strength & heat-treatment response, while still possessing reasonable machinability and an excellent surface finish. Noise and vibration damping are excellent in this grade. Unibar 300 can be hardened by conventional methods, to Rc 50 on the bar surface. Information provided by United Cast Bar Ltd.
Key Words:	EN-1561-GJL-300 GG30; Meehanite GB300.
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Physical Properties	Metric	English	Comments

Density	7.30 g/cc	0.264 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	190 - 260 @Load 3000 kg	190 - 260 @Load 6610 lb	10 mm ball
Tensile Strength	195 MPa @Diameter 150 - 300 mm	28300 psi @Diameter 5.91 - 11.8 in
	210 MPa @Diameter 80.0 - 150 mm	30500 psi @Diameter 3.15 - 5.91 in
	240 MPa @Diameter 40.0 - 80.0 mm	34800 psi @Diameter 1.57 - 3.15 in
	270 MPa @Diameter 20.0 - 40.0 mm	39200 psi @Diameter 0.787 - 1.57 in

Component Elements Properties	Metric	English	Comments
Carbon, C	2.95 - 3.45 %	2.95 - 3.45 %
Iron, Fe	92.63 - 94.26 %	92.63 - 94.26 %	as balance
Manganese, Mn	0.55 - 0.75 %	0.55 - 0.75 %
Phosphorus, P	0.10 - 0.20 %	0.10 - 0.20 %
Silicon, Si	2.1 - 2.9 %	2.1 - 2.9 %
Sulfur, S	0.040 - 0.070 %	0.040 - 0.070 %

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NUNITED03 / 160450

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