ASTM B111M C71500 CuNi70/30 Cold-Drawn heat exchanger pipes - Knowledge

Standard Grade: C71500 (70-30 Cu-Ni Alloy, CuNi70/30)

International Equivalents:

UNS: C71500 (ASTM B111M, B122)

EN: CW354H (DIN 17663)

Applicable Standards: ASTM B111M, B122, B151M, B466M

Product Features of ASTM B111M C71500 Copper Heat Exchanger Tube

1. High Corrosion Resistance: Excellent performance in seawater, weak acids, and high-temperature oxidation (corrosion rate ≤0.003 mm/a).

2. Mechanical Excellence: Tensile strength 350-550 MPa, elongation 20-40%, combining toughness and plasticity.

3. Machinability: Supports cold/hot working, welding (TIG/MIG), and deep drawing; surface finish up to Ra 0.1μm.

4. Temperature Adaptability: Design temperature up to 371°C (annealed state), no brittleness at cryogenic conditions.

Common Product Forms & Dimensions of ASTM B111M C71500 heat transfer equipment Copper Tube

Product Form	Size Range	Delivery Condition
Sheet	Thickness: 0.05-1.5mm, Width ≤500mm	Soft (M), Hard (H)
Rod	Diameter: 3-120mm, Length: 2-6m	Drawn, Hot-Rolled
Tube	OD: 2-150mm, Wall Thickness: 0.3-15mm	Cold-Drawn, Half-Hard
Wire	Diameter: 0.05-6.0mm	Coiled or Straight

Chemical Composition of ASTM B111M C71500 electro-heat up copper pipe

Element	Content (%)	Function/Limit
Cu	65.0-70.0	Base material
Ni	29.0-33.0	Enhances corrosion resistance & strength
Fe	0.4-1.0	Improves wear & fatigue resistance
Mn	≤1.0	Enhances machinability
Pb	≤0.05	Strictly controlled
Zn	≤1.0	Impurity limitation

C71500 Copper Nickel Properties

Physical Properties

Property	Value	Remarks
Density	8.94 g/cm³	High density for precision parts
Melting Point	1170-1240°C	Limited castability
Thermal Conductivity	29-33 W/(m·K)	Moderate heat dissipation
Thermal Expansion	13.2-16.2×10⁻⁶/°C (20-300°C)	Excellent thermal stability
Electrical Conductivity	5-7% IACS	Suitable for industrial use

Mechanical Properties

Property	Soft (M)	Hard (H04)
Tensile Strength (σb)	350-480 MPa	550-800 MPa
Yield Strength (σ0.2)	105-205 MPa	250-450 MPa
Elongation (δ10)	20-40%	2-5%
Hardness (HV)	80-130	200-300

Core Advantages of ASTM B111M C71500 Heat Sink Copper Heat Pipe

1. Industry-Leading Corrosion Resistance: Outstanding resistance to pitting and stress corrosion cracking in seawater and chemical media.

2. Multi-Scenario Adaptability: Operates reliably from -100°C to 371°C.

3. High Machining Flexibility: Compatible with welding, cold stamping, and forging.

Product Applications of ASTM B111M C71500 radiator copper pipe

1. Marine Engineering: Seawater cooler pipes, ship propellers, offshore platform components.

2. Chemical Equipment: Distillation towers, reactors, heat exchanger sleeves.

3. Power Industry: Nuclear plant condensers, heat exchangers.

4. Aerospace: Engine components, hydraulic system pipelines.

Key Application Scenarios of ASTM B111M C71500 Copper Heat Exchanger Coil

High-Temperature & High-Pressure Systems: Petrochemical valves, nuclear reactor seals.

Precision Instruments: Aircraft engine parts, deep-sea exploration equipment.

FAQs

1. Q: How does C71500 differ from brass?

A: C71500 offers superior corrosion resistance and strength but at a higher cost.

2. Q: Is C71500 material welding feasible?

A: Yes, but control heat input and use compatible filler wires.

3. Q: Corrosion resistance in acidic environments?

A: Resists weak acids but avoid strong oxidizing acids (e.g., nitric acid).

Types of products GNEE can provide

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Product name	Copper/brass/bronze pipe
Material	Copper,Pure Copper,Red Copper,Brass,Phosphor Bronze,Nickel-Copper
Grade	Copper:C11000 C10200 C1100 C1220 T2 CU-OF CU-SF Brass:C28000 C27400 C27000 C26000 C24000 CuZn40 CuZn35 CuZn30 Phosphor Bronze:C52100 C51900 Nickel Copper:C70600 CuNi10 CuNi30
Size	Outside diameter 2-800mm; wall thickness 1-220mm; Length 1- 6m; All sizes can be according to customer's requirements.
Hardness	1/16 hard,1/8 hard,3/8 hard,1/4 hard,1/2hard,full hard
Surface	Polished,bright,oiled,hair line,brush,mirror,or as required
Apllication	Construction, industrial, decoration
Service	Custom service
Price terms	CFR,FOB,CIF,Ex-work,CNF
Classification of copper materials	copper wire, copper rod, copper strip, copper plate, copper tube, copper, bronze, phosphor bronze, materials include: H96 (C2100), H90 (C2200), H80 (C2400), H70 (C2600), H68 (C2680), H65 (2700), H63 (C2720), H62 (C2800), HP59-1 brass rod, H62 brass plate, C1100 copper plate, T3 copper plate, copper rod, copper plate and copper strip, T2 copper plate, phosphor bronze C5102, C5210, C5191, C1220, C1040, C111, brass strip C2680, C2200, C2720, C2600, C2620, pure copper C1020, C1100, brass strip, C1201, C1220, copper foil, brass foil, GB states include O, 1/2H, 1/4H, 3/4H, H, EH, SH, specializing in the production of brass tubes (H62, H65, H68, H70, H85), copper tubes, copper strips, copper rods, and copper plates with diameters ranging from 2 to 219. (T2, TP2, TU2), aluminum tube (1060, 6063), tin brass tube (HSN70-1A), aluminum brass tube (HAL77-2), nickel white copper tube (B10, BFE10-1-1), tin bronze tube (QSN6.5-0.1, QSN4-0.3), electric furnace coil, air conditioning coil, plastic coated copper tube, copper rod, copper tube, brass tube, copper busbar, various copper water pipes and accessories, undertake various copper doors, copper handrails and other copper decoration projects.

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Products name	Copper/Brass/Bronze alloy Bar
Material	C10100,C10200,C10300,C10400,C10500,C10700,C10800,C10910,C10920,C10930, C11000,C11300,C11400,C11500,C11600,C12000,C12200,C12300,C12500,C14200, C14420,C14500,C14510,C14520,C14530,C17200,C19200,C21000,C23000,C26000, C27000,C27400,C28000,C33000,C33200,C37000,C44300,C44400,C44500,C60800, C63000,C65500,C68700,C70400,C70600,C70620,C71000,C71500,C71520,C71640, C72200,C86300,C83600,C95400,C95500,C95800, H59,62,H65,H68,H70,H80,H85,H90,H96, T1,T2,T3,TU1,TU0,TU2,TP1,TP2,TAg0.1,etc
Size	Thickness	2mm-200mm or customized
	Width	10mm-600mm or customized
	Length	200mm-6000mm or customized
Surface	Mill,polished,bright,oiled,hair line,brush,mirror,sand blast,or as required.
Application	With high conductivity,copper flat bar can be widely used in: Blade terminal or cable inside the electricity cabinet,gasket for heavy machinery, bearing bush with low revolving speed.,etc.
standard	GB/T4423-2007, JISH3250-2006, JISH3300-2006, ASTM B152M,B152,B187,B133,B301,B196,B441,B465 etc.
Package	Standard export package (bundled by strip,wrapped with plastic bag,wooden case or as customers' requirement.)

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copper plate/sheet/coil

Description	copper plate/copper sheet
Other Standards	ASTM A276, A484, A479, A580, A582, JIS G4303, JIS G4311, DIN 1654-5,DIN 17440,GB/T 1220
Material	Copper (C10200,C11000,C10100,C10200,C12000,)C11600, Brass(C21000,C22000,C23000,C24000,C26000,C27000,C27200,C27400,C2800, C31400,C33000,C35600,C37100,C36000,C35300,C37100,C37700,C37710,C37000, C68700,C41100,C44300,C46200.C46400,C26130,C65600,) Bronze(C50500,C51100,C52100,C60800,C61000,C61900,C63010,C62300, C63000,C63280,C63020,C17200,C17000,C17500,C17510,C18200,C18100,C18200, C16200,C19400,C14500) Cupronickel(C70400,C71000,C71300,C71500,C70400,C70600,C75200,C77000, C75400,C79000,C79200)
Specifications	thickness:0.1~20mm,width:1~2500mm
Price Term	EX-Work, FOB, CFR, CIF
Payment Term	T/T, L/C, Western Union
Delivery Time	According to customer' s quantity
Main Market	Europe,South America, Africa ,Oceania ,such as : USA,Germany,India,.,Dubai,Vietnam,Ireland,Singapore,etc

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copper wire

Product name	Copper Wire
Grade	C10100,C10200,C10300,C10400,C10500,C10700,C10800,C10910,C10920,C10930,C11000,C11300,C11400,C11500,C11600,C12000,C12200,C12300,C12500,C14200,C14420,C14500,C14510,C14520,C14530,C17200,C19200,C21000,C23000,C26000,C27000,C27400,C28000,C33000,C33200,C37000,C44300,C44400,C44500,C60800,C63020,C65500,C68700,C70400,C70620,C71000,C71500,C71520,C71640,C72200,T1,T2,T3,etc
Standard	JIS ASTM DIN EN ISO
Diameter	0.3-5mm/custom
Length	custom
Surface	mill,polished,bright,mirror,hair line,brush,checkered,antique,sand blast,etc
Application	Building, industry etc
Payment Terms	T/T or L/C at sight
Delivery time	5-15 days after receiving L/C or deposit
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Testing equipment	Three-coordinate measuring machine, 2.5 Dimension measuring instrument, inside micrometer, outside micrometer, electronic height gauge,Thread go and no-go gauges, external thread ring gauges, electronic calipers, pin gauges
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