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ASTM B127 Monel 404 Plate
Monel 404 is a nickel-copper alloy specifically engineered for electronic and electrical applications. With controlled composition and low magnetic permeability, it is particularly suitable for sealed electronic components, waveguides, and cryogenic applications. The alloy maintains excellent brazing and soldering characteristics while offering good corrosion resistance in mild environments.
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Product Parameters
Product NameASTM B127 Monel 404 Plate
Thickness0.5mm – 10mm
Width1000–2000mm
LengthCustomized
Chemical Composition

(Ni)(Cu)(Fe)(Mn)(Si)(C)(S)(Al)(Ti)
Monel 400
(UNS N04400)		63% min28–34%≤2.5%≤2.0%≤0.5%≤0.3%≤0.024%--
Monel 401
(UNS N04401)		43–46%53–55%≤0.5%≤0.25%≤0.25%≤0.15%≤0.01%--
Monel 404
(UNS N04404)		52–57%44–46%≤0.5%≤0.1%≤0.1%≤0.15%≤0.01%-
Monel 450
(UNS N04450)		63% min28–34%≤2.5%≤1.5%≤0.5%≤0.25%≤0.025%-
Monel K-500
(UNS N05500)		63% min27–33%≤2.0%≤1.5%≤0.5%≤0.25%≤0.01%2.3–3.15%
(Time-limited enhancement)		0.35–0.85%
(Time-limited enhancement)
Monel R-405
(UNS N04405)		63% min28–34%≤2.5%≤2.0%≤0.5%≤0.3%0.025–0.06% (Easy to cut)--
Physical Properties
PropertyValue
Density8.91 g/cm³
Melting Range1300-1350°C
Electrical Resistivity49.0 μΩ·cm
Thermal Conductivity22 W/m·K
Magnetic Permeability≤1.001
Coefficient of Thermal Expansion13.9 μm/m·°C (20-100°C)
Manufacturing Process
Raw Material Preparation:
High-purity nickel and copper (>99.9%)
Melting & Casting:
Vacuum Induction Melting (VIM)
Continuous casting into billets
Hot Working:
Forging at 900-1100°C
Hot rolling to intermediate sizes
Cold Working:
Cold drawing/rolling with intermediate anneals
Final annealing at 700-850°C
Special Processing:
Ultra-clean melting for electronic grades
Controlled atmosphere annealing
Quality Control:
Eddy current testing for wires
Ultrasonic inspection for critical components
Applications
Electronics Industry:
Hermetic seals for transistors/diodes
Lead frames for IC packaging
Waveguide components
Energy Sector:
Cryogenic electrical contacts
Superconducting magnet components
Specialty Engineering:
Bellows for precision instruments
Ceramic-to-metal seals
Glass sealing applications
Key Advantages
Ultra-low magnetic permeability
Excellent brazeability
Consistent thermal expansion characteristics
Good cryogenic performance


Product Display

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Product Application

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Product Packaging

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Factory Display
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FAQ

Q:Can I get samples before order ?

A:Yes, of course. Usually our samples are free,we can produce by your samples or technical drawings.

Q:Can I go to your factory to visit?

A:Of course, we welcome customers from all over the world to visit our factory.

Q:How can I get a quotation from you ?

A:You can leave us message, and we will reply every message in time. Or we may talk on line.

Q:What product information do I need to provide?

A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.

Q:Does the product have quality inspection before loading?

A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we accept the third party inspection absolutely.

Q:What are the advantages of your company?

A:（1）More Than 30 year's Experience

（2）The company is a modern steel enterprise group integrating precision manufacturing, spot warehousing, international logistics, and product deep processing.

（3）World-class production equipment, product quality that meets international certifications, and timely and thoughtful after-sales service

（4）Never stop product research and development and innovation to create high-quality products that meet the global standards.

（5）Integrity business philosophy, the highest quality products, the most reasonable prices, and a global marketing network.

Q:How do we trust your company?

A:We specialise in steel business for years as golden supplier on Alibaba, headquarter locates in liaocheng, Shandong province, you are welcome to investigate in any ways, by all means, you could place an order in Alibaba with trade assurance which could secure your payment.

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