Copper Nickel 70/30 Fittings | ASTM B466 UNS C71500 Fittings Supplier

Name: Copper Nickel 70/30 Fittings | ASTM B466 UNS C71500 Fittings Supplier
Brand: Solitaire Overseas

Copper Nickel 70/30 Fittings Manufacturer, Supplier & Exporter

Solitaire Overseas is a reputable manufacturer, supplier, and exporter of Copper Nickel 70/30 Fittings, which is also referred to as CuNi 70/30 Pipe Fittings and Copper Nickel 70/30 Pipe Fittings, and meets the requirements of ASTM B466 / UNS C71500. The fittings are commonly used in marine as well as industrial settings because of their high resistance to corrosion in seawater, biofouling as well as the fabricability.

In addition to our Copper Nickel 70/30 Flanges, Copper Nickel 90/10 Fittings, and Copper Nickel 70/30 Pipes, these fittings are also offered in seamless and welded versions as elbow, tees, reducers, caps and stub end. CuNi 70/30 Pipe Fittings, competitive price and quick delivery anywhere in the world. Contact us.

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Copper Nickel 70/30 Pipe Fittings Specifications

Parameter	Details
Material Grade	Copper Nickel 70/30
Trade Names	CuNi 70/30, Cunifer 70/30, Alloy 715
Type	Welded, Seamless, Fabricated
Welded Size Range	1/2" – 48"
Seamless Size Range	1/2" – 10"
Stock Sizes – Welded	1/2" – 48"
Stock Sizes – Seamless	1/2" – 10"
Schedule Range	SCH 5 – XXS / SCH 10 – SCH 160
Connection Type	Welding
Standards	ASME B16.9, MSS-SP-43, ASME B16.28, ANSI B16.9
Material Standard	ASTM B466, ASME SB 466
UNS No.	C71500
Werkstoff No. (WNR)	2.0882
Radius / Bending Radius	1D, 2D, 3D, 5D, up to 10D
Finish	Polished, Pickled, Mill Finish
Manufacturing Method	Seamless, Welded, Fabricated
Manufacturing Process	Hot Forming, Mandrel Forming
Temperature Range	927 – 1038°C
Melting Point	1170 – 1240°C
Density	8.95 kg/dm³
Testing	Ultrasonic Test, HIC Tested, PMI
Bending Methods	Rotary Draw, Ram-Type, Mandrel, Roll Bending
Forms Available	Tee, Cap, Elbow, Reducer
Documentation	100% Radiography Report, Third Party Inspection Report

Size Chart of CuNi Cross

Size (Inches)	2 × 1-1/4	3/4 × 1/2	2 × 1/2	2-1/2 × –	3 × 2-1/2	1-1/2 × 1/2	1-1/4 × 3/4	1-1/4 × 1	3 × 1-1/4	3 × 1-1/2	1-1/2 × 3/4	1-1/2 × 1-1/4	1-1/4 × 1/2	3-1/2 × 1-1/2	1 × 1/2	1-1/4
Weight (kg)	0.43	0.11	0.36	0.64	1.10	0.26	0.21	0.22	0.85	0.94	0.24	0.28	0.21	1.46	0.16	0.21

Dimensions of Cunifer Reducing Elbow

OD (mm)	Inch	Wall Thickness (mm)	E (mm)	A (mm)	Weight (kg)
88.9	3	2	82.5	34	0.32
193.7	7	2.5	180	75	1.9
76.1	2.5	2	70	29	0.22
368	14	4	352.5	146	11.3
610	24	5	610	253	40.9
419.1	16	4	400	166	16.4
219.1	8	3	210	87	3
159	6	2.5	150	62	1.3
108	4	2.5	100	41	0.58
38	1.25	1.5	32.5	14	0.04
323.9	12	4	305	126	8.6
57	2	1.5	52.5	22	0.10
133	5	2.5	125	52	0.9
508	20	4.5	505	209	28.1
44.5	1.5	1.5	40	17	0.06
457.2	18	4	455	188	20.4
30	1	1.5	30	12	0.02
267	10	3	255	106	4.4

Thickness Chart of CuNi Alloy Stub Ends (Schedule 40)

NPS	Equal Tee	90° Elbow	45° Elbow
8	0.06	0.03	0.02
10	0.03	0.03	0.02
15	0.10	0.08	0.04
20	0.17	0.08	0.04
25	0.29	0.15	0.11
32	0.59	0.26	0.17
40	0.86	0.40	0.23
50	1.28	0.70	0.40
65	2.19	1.40	0.77
80	3.31	2.20	1.08
90	4.08	2.83	1.42
100	5.27	4.47	2.09
150	10.99	10.89	5.44
200	20.91	21.54	10.77
250	35.38	38.56	19.27
300	62.14	59.42	29.71

Testing of Cu Ni Nipple

Testing Methods
Mechanical Testing
Intergranular Corrosion (IGC) Test
Hardness Test
Pitting Resistance Test
Positive Material Identification (PMI)
Chemical Analysis
Flattening Test
Micro & Macro Test

Cu-Ni Pipe Reducer Thickness (Schedule 40)

NPS	Reducing & Unequal Tee	Concentric Reducer	Eccentric Reducer
40 × 25	0.76	0.26	0.26
50 × 25	1.10	0.40	0.40
50 × 40	1.15	0.45	0.45
80 × 50	2.91	1.00	1.00
100 × 50	4.48	1.50	1.50
100 × 80	4.64	1.74	1.74
150 × 80	9.68	3.95	3.95
150 × 100	11.94	4.07	4.07
200 × 100	17.98	6.55	6.55
200 × 150	18.82	6.74	6.74

Available Surface Finishes of Nickel Copper Alloy Unequal Tee

Mirror Finish
Sand Blasting
Polished
Mill Finish
Sand Rolling
Bead Blast

Copper Nickel Alloy Short Radius Pipe Elbows – Heat Treatment

Heat Treatment	Temperature Range
Solution Annealing	650°C – 850°C
Annealing	600°C – 700°C
Stress Relieving	300°C – 400°C

DIN Standards of CuNi Cross & Fittings

DIN Standard	Fitting Type
DIN 2615	Tee
DIN 2616	Reducer
DIN 2605	Elbow
DIN 2617	Caps
DIN 2618	Saddle
DIN 28011	Torispherical Heads

Copper Nickel Pipe Fittings Temperature Range

Temperature Range	Maximum Service Temperature
-100°C to 250°C	300°C

Cupro Nickel 70/30 Seamless & Welded Fittings Sizes in Stock

Forms of Pipe Fittings	Seamless Size Range	Welded Size Range	Dimension Standards	Schedules
End Caps	1/8” NB to 24” NB	Up to 42” NB	ASME B16.9, ANSI B16.9, ASME B16.28, ANSI B16.28, ANSI B16.25, MSS SP 75	SCH 5, 5S, 10, 10S, 20, 30, 40, 40S, STD, 60, 80S, XS, 100, 120, 160, XXS
Tees	1/8” NB to 24” NB	Up to 42” NB	Same as above	Same as above
Return Bends	1/8” NB to 8” NB	—	Same as above	Same as above
Reducers	1/8” NB to 24” NB	Up to 42” NB	Same as above	Same as above
Elbows (45°, 90°, 180°)	1/8” NB to 24” NB	Up to 42” NB	Same as above	Same as above
Swage Nipple	2 1/16” to 30”	—	Standard / Custom	As required
Cross	1/8” NB to 8” NB	—	Standard / Custom	As required

HS Code of C71500 Copper Nickel Tee

Grade	HS Code
Copper Nickel 70/30 Pipe Fittings	74122090

Copper Nickel 70/30 Pipe Fittings Types

Nickel Copper Cap Working Pressures

Size (Inch)	Up to 150°C	Up to 100°C
1/4	131	150
1/2	87	100
3/4	79	90
1 1/8	66	75
1 3/8	57	65
2	29	33
3	25	29
4	23.5	27

Bending Radius of Cu-Ni Elbow

Bend Radius	Bend Angle
10 D	90°
3 D	15°
8 D	60°
6 D	45°
5 D	180°
4 D	135°

Standards of Copper Nickel Pipe Fittings

Pipe Fittings	DIN	ASME / ANSI
Reducing Saddles	DIN 86087	—
Equal Tees	DIN 86088	ASME B16.9
Elbows Long Radius	DIN 86090	ASME B16.9
Concentric Reducers	DIN 86089	ASME B16.9
Equal Saddles	DIN 86087	—
Eccentric Reducers	DIN 86089	ASME B16.9
End Caps	DIN 28011	ASME B16.9
Elbows Short Radius	DIN 86090	ASME B16.9
Reducing Tees	DIN 86088	ASME B16.9

Destructive & Non-Destructive Testing of CuNi Alloy Stub Ends

Non-Destructive Testing	Destructive Testing
Liquid Dye Penetrant Testing (DPI)	Ferrite Determination to ASTM E562
Product Material Identification (PMI)	Hardness Testing
Niton XL2 980 Gold Alloy Analyzer	Charpy Impact Testing
Ultrasonic Testing (UT)	Method B - ASTM G28
Radiography	ASTM A262 Practice E Corrosion Test
Fischer Ferrite Testing	Tensile Testing to Applicable Specification
Ultrasonic Testing (UT)	Metallography

Working Temperature of Copper Nickel Fittings

16 Bar Rating

Temperature	Rating
38°C	Use 20 bar
50°C	16
75°C	16
100°C	15.7

20 Bar Rating

Temperature	Rating
38°C	20
50°C	19.7
75°C	18.6
100°C	17.3

Nickel Copper Caps Dimensions

NPS	Length (H)	O.D. (D)
1/2	25	21.3
3/4	25	26.7
1	38	33.4
1 1/4	38	42.2
1 1/2	38	48.3
2	38	60.3
2 1/2	38	73
3	51	88.9
3 1/2	64	101.6
4	64	114.3
5	76	141.3
6	89	168.3
8	102	219.1
10	127	273
12	152	323.8
14	165	355.6
16	178	406.4
18	203	457
20	229	508
22	254	559
24	267	610
26	267	660
28	267	711
30	267	762
32	267	813
34	237	864

Cunifer Reducing Elbow – Chemical Composition

Element	Material	Composition
Ni	Nickel	29 – 33% (min.)
Cu	Copper	70%
Fe	Iron	0.4 – 1.0%
Zn	Zinc	1%

Mechanical Properties of CuNi Alloy Stub Ends

Grade	Elongation (E 5,65 VS)	Proof Stress (YS 0.2) (Rp 0.2)	Tensile Strength (UTS) (Rm)	Hardness (HB10 D2)
Cu Ni 70/30	> 30%	> 130 MPa / > 19 ksi	> 350 MPa / > 51 ksi	> 80

Equivalent Material of Copper Nickel Pipe Fittings

JIS H3300	BS2871 {Part 2}	AS1752	DIN17664	DIN 86019 WL2.1972	EEMUA 144	MIL-T-16420K	EN12449
C7060T	CN102	C70600	CuNi10Fe1Mn	CuNi10Fe1.6Mn	7060X	706	CW352H

Bending Method of Cunifer Reducing Elbow

Bending Methods
Rotary Draw Bending
Roll Bending
Ram-Type Bending
Mandrel Bending
Hot Induction Bending

Price List of Copper Nickel 70/30 Fittings

Prices depend on type, size, schedule, and quantity. Request a quote from Solitaire Overseas for best pricing.

Product	Size	Grade / UNS	Price
Copper Nickel 70/30 Pipe Fittings	1/2" – 48"NB	As Per Requirement	Request a Quote
Copper Nickel 70/30 Pipe Fittings	Custom Size	As Per Requirement	Request a Quote

Application Industries of CuNi 70/30 Pipe Fittings

Industry	Application
Marine & Shipbuilding	Seawater piping, cooling systems, desalination
Power Generation	Condenser and heat exchanger tubing
Oil & Gas (Offshore)	Subsea pipelines, platform piping
Chemical Processing	Corrosive fluid handling, reactors
Desalination	Brine and seawater system piping
Defence / Naval	Shipboard systems, torpedo tubes

Why Choose Solitaire Overseas?

Trusted manufacturer, supplier, and exporter with global reach
Mill test certificates and third-party inspection available
Strict quality control as per ASTM, ASME, and ISO standards
Competitive pricing with prompt delivery worldwide
Wide stock availability for urgent and bulk requirements
Custom sizes, grades, and specifications on request
Experienced team ensuring dimensional accuracy and traceability

Frequently Asked Questions (FAQs)

Q1: What is Copper Nickel 70/30 and what are its key properties?

CuNi 70/30 refers to alloy of 70% copper and 30% nickel together with additions of iron and manganese.It has very good corrosion resistance in seawater, tensile strength of 415 MPa minimum, excellent fabricability, biofouling resistance, and excellent weldability, which does not require any special precaution during fabrication.

Q2: What is the standard for CuNi 70/30 Pipe Fittings?

CuNi 70/30 Pipe Fittings are produced in accordance with ASTM B466 and ASME SB466 on seamless fittings and ASTM B467 on those fittings that are to be welded.Dimensions are in compliance with ASME/ANSI B16.9, B16.28, and MSS SP43.UNS is C71500, DIN designation is 2.0882 and EN designation is CuNi30Mn1Fe.

Q3: What is the difference between CuNi 70/30 and CuNi 90/10 fittings?

In CuNi 70/30, the amount of nickel was 30% compared to 10 percent in 90/10.This provides 70/30 with greater resistance to corrosion and erosion in high velocity and polluted sea water, a little higher yield strength, and enhanced adaptability to exacting uses.CuNi 90/10 is less expensive and can be used generally in the marine and industry.

Q4: Can CuNi 70/30 fittings be welded without special precautions?

Yes. Copper Nickel 70/30 fittings are not hard to weld.The typical TIG and MIG welding procedures can be used and no preheat is normally necessary.The alloy can also be cold worked and fabricated with a lot of ease and therefore, installation and maintenance are easily achieved in the field.

Q5: What sizes are available in Copper Nickel 70/30 Pipe Fittings?

Copper Nickel 70/30 Pipe Fittings come in NB sizes 1/2 inch to 48 inch.Up to 10 inch NB seamless fittings are available.Fabricated and welded types range between 1/2 to 48 inch. Schedules range from 5 to XXS. Bend radius includes 1D, 3D, 5D and 10D and sizes are customised upon request.

Get a Quote for Copper Nickel 70/30 Pipe Fittings

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