Copper Nickel 70/30 Flanges

Copper Nickel 70/30 Flanges

Arrow Piping Solutions is one of the leading manufacturers, suppliers, exporters, and distributors of Copper Nickel 70/30 Flanges in India. We offer a wide range of Cu-Ni 70/30 Flange types including Lap Joint Flanges, SORF Flanges, Socket Weld Flanges, Threaded Flanges, Plate Flanges, and Spectacle Blind Flanges. All our products are manufactured in accordance with ASTM B151 and are competitively priced across Mumbai and all over India.

Copper Nickel 70/30 (C71500) is composed of 70% Copper and 30% Nickel, with small additions of iron and manganese to enhance overall strength and corrosion resistance. This alloy is widely used in marine, chemical, and heat exchanger applications due to its excellent resistance to seawater, erosion, and stress corrosion cracking.

Specifications of Copper Nickel 70/30 Flanges

• Specification: ASTM B151 / ASME SB151
• Dimension Standard: ANSI B16.5, BS 1560, BS 10, IS 6392, B-2.1 NPT, API, DIN, JIS, MSS SP 44
• Standard: STM / ASME SB 151 / 160 / 472
• Size: ½” NB to 12” NB
• Class / Pressure: 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, ASA 150#, ASA 300#, DIN ND 6 to ND 40

Equivalent Grades

STANDARD	UNS	DIN
Cupro Nickel 70/30	C71500	2.0882

Chemical Composition

Grade	Cu	Mn	Pb	Ni	Fe	Zn
Cupro Nickel 70/30	65 min	1.0 max	0.05 max	29–33	0.4–1.0	1 max

Mechanical Properties

Density	Melting Point	Tensile Strength	Yield Strength (0.2% Offset)	Elongation
0.323 lb/in³	2260 °F	50000 psi	20000 psi	30%

Stock Sizes and Dimensions

Arrow Piping Solutions maintains a wide stock of Copper Nickel 70/30 Flanges in multiple dimensions, pressure ratings, and thicknesses to meet your project’s specific requirements. Custom sizes are also available on request.

Available Standards & Dimensions

Standard	Class	Diameter	Bolt Circle	Bolts	Bolt Size	Bolt Hole Dia
ANSI 150	150	89	60	4	13	16
ANSI 300	300	95	67	4	13	16
ANSI 600	600	95	67	4	13	16
ANSI 900	900	121	83	4	19	22
PN10	10	95	65	4	M12	14
PN16	16	95	65	4	M12	14

Application Industries