Monel 400
Resistant to high-temperature seawater and steam corrosion
Resistant to corrosion from rapidly flowing brackish water or seawater
Excellent resistance to stress corrosion cracking in most freshwaters
Especially resistant to deoxygenated hydrochloric and hydrofluoric acid corrosion
Offers some corrosion resistance to hydrochloric and sulfuric acids at moderate temperatures and concentrations, but is rarely the preferred material for these acids
Resistant to neutral and alkaline salt corrosion
Resistant to chloride-induced stress corrosion cracking
Good mechanical properties over a temperature range from sub-zero to 1020°F (540°C)
Highly resistant to alkalis
As a leading supplier and manufacturer in China, GNEE Steel provides cost-effective nickel-based alloy products.
- Send E-mail: ss@gneesteel.com
- Tel: +8615824687445
Gnee Super Alloy (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of monel 400 in China. If you're going to wholesale high quality monel 400 made in China, welcome to get free sample from our factory. Good service and reasonable price are available.
Monel 400 Description
Gnee Steel Monel 400 Description
Monel 400 is a nickel-copper alloy that is resistant to corrosion from seawater and high-temperature steam, as well as salt solutions and alkaline solutions.
Monel 400 is a nickel-copper alloy with excellent corrosion resistance in a variety of media. Monel 400 is characterized by good overall corrosion resistance, good weldability, and medium to high strength. This alloy has been used in a variety of applications. It exhibits excellent corrosion resistance to rapidly flowing brackish water or seawater. Under deoxygenated conditions, it has particularly strong resistance to hydrochloric and hydrofluoric acids. The alloy is slightly magnetic at room temperature. Monel 400 is widely used in the chemical, petroleum, and marine industries.
Monel 400 Available Shape
Monel 400 Seamless Pipe
Monel 400 Plate
Monel 400 Pipe Fitting
Monel 400 Bar
Monel 400 ASTM Standard
| Specification | Title |
| B163 |
Seamless Nickel and Nickel Alloy Condenser and Heat-Exchanger Tubes |
| B366 |
Nickel Alloy Fittings |
| B127 |
Nickel-Copper Alloy (UNS N04400) Plate, Sheet, and Strip |
| B164 |
Nickel-Copper Alloy Rod, Bar |
| B165 |
Nickel-Copper Alloy (UNS N04400) Seamless Pipe and Tube |
| B725 |
Nickel Copper Alloy (UNS N04400) Pipe |
| B730 |
Nickel Copper Alloy (UNS N04400) Tube |
Nickel 400 Alloy Specification
Equivalent Standards
| Country/Standard | Equivalent Grade |
|---|---|
| USA (ASTM) | UNS N04400 |
| Germany (DIN) | 2.4360 |
| Japan (JIS) | NW 4400 |
| UK (BS) | NA 13 |
| France (AFNOR) | NU 30 |
| China (GB) | NS 111 |
Alloy 400 Chemical Composition
| Element | Content (%) |
|---|---|
| Nickel, Ni | 64.0 |
| Copper, Cu | 31.0 |
| Iron, Fe | ≤ 2.5 |
| Manganese, Mn | ≤ 2.0 |
| Silicon, Si | ≤ 0.5 |
| Carbon, C | ≤ 0.3 |
| Sulphur, S | ≤ 0.02 |
Nickel Based 400 Alloy Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 8.8 gm/cm3 | 0.318 lb/in3 |
| Melting Point | 1300 – 1350 °C | 2370 – 2460 °F |
Monel 400 Mechanical Properties
| Forms & Condition | Tensile Strength | Yield Strength (0.2% Offset) | Elongation, % | Hardness | |||
|---|---|---|---|---|---|---|---|
| Ksi | MPa | Ksi | Mpa | Brinell (3000 - Kg) | Rockwell B | ||
| Rod and Bar | |||||||
| Annealed | 75-90 | 517-620 | 25-50 | 172-345 | 60-35 | 110-149 | 60-80 |
| Cold-Drawn, Stress-Relieved | 84-120 | 579-827 | 55-100 | 379-690 | 40-22 | 160-225 | 85-20C |
| Plate | |||||||
| Hot-Rolled, As-Rolled | 75-95 | 517-655 | 40-75 | 276-517 | 45-30 | 125-215 | 70-96 |
| Hot-Rolled, Annealed | 70-85 | 482-586 | 28-50 | 193-345 | 50-35 | 110-140 | 60-76 |
| Sheet | |||||||
| Annealed | 70-85 | 482-586 | 30-45 | 207-310 | 45-35 | - | 65-80 |
| Cold-Rolled, Hard | 100-120 | 690-827 | 90-110 | 621-758 | 15-2 | 93 min.a | |
| Tube and Pipe, Seamless | |||||||
| Cold-Drawn, Annealed | 70-85 | 482-586 | 25-45 | 172-310 | 50-35 | - | 75 max.a |
| Cold-Drawn, Stress-Relieved | 85-120 | 586-827 | 55-100 | 379-690 | 35-15 | - | 85-100a |
Corrosion Resistance of Monel 400
Monel 400 alloy is virtually immune to chloride stress corrosion cracking in typical environments. Generally, it exhibits very good corrosion resistance in reducing environments but poorer resistance under oxidizing conditions. It is not suitable for oxidizing acids such as nitric and nitrous acids. However, it is resistant to most alkalis, salts, water, foodstuffs, organic substances, and atmospheric environments at both ambient and elevated temperatures.
This nickel alloy is susceptible to corrosion in sulfur-containing gases above approximately 700°F, and molten sulfur will also corrode the alloy at temperatures above approximately 500°F.
Monel 400 has roughly the same corrosion resistance as pure nickel, but due to its superior machinability, it offers higher maximum operating pressures and temperatures at a lower cost.
Applications of Monel 400
Marine engineering
Chemical and hydrocarbon processing equipment
Gasoline and freshwater storage tanks
Crude oil distillers
Deaerating heaters
Boiler feedwater heaters and other heat exchangers
Valves, pumps, shafts, pipe fittings, and fasteners
Industrial heat exchangers
Chlorinated solvents
Crude oil distillation columns
Comparison of Monel 400 with other alloys in the same series.
| Element / Property | Monel 400 | Monel R-405 | Monel K-500 |
|---|---|---|---|
| Chemical Composition (wt %) | |||
| Nickel (Ni) | 63 min. | 63 min. | 63 min. |
| Copper (Cu) | 28 - 34 | 28 - 34 | 27 - 33 |
| Manganese (Mn) | 2 max. | 2 max. | 1.5 max. |
| Iron (Fe) | 2.5 max. | 2.5 max. | 2 max. |
| Sulfur (S) | 0.024 max. | 0.025 to 0.060 | 0.01 max. |
| Silicon (Si) | 0.5 max. | 0.5 max. | 0.5 max. |
| Aluminum (Al) | 0 | 0 | 2.3 to 3.15 |
| Titanium (Ti) | 0 | 0 | 0.35 to 0.85 |
| Physical Properties | |||
| Density (g/cm³) | 8.8 | 8.8 | 8.44 |
| Curie Temperature (°C) | 21 - 49 | 28 - 34 | - |
| Electrical Resistivity @ 100°C (μΩ·m) (Annealed) | 0.537 | 0.537 | 0.618 |
| Thermal Linear Expansion @ 100°C (μm/m·°C) | 14.2 | 14.2 | 13.7 |
| Thermal Conductivity @ 100°C (W/m·°C) (Annealed) | 24 | 24 | 19.4 |
| Specific Heat @ 100°C (J/kg·°C) (Annealed) | 445 | 445 | 448 |
| Property / Alloy | Monel 400 | Monel R-405 | Monel K-500 |
|---|---|---|---|
| Mechanical Properties | |||
| Hardening Method | Cold drawn & stress relieved | As cold drawn | Hot finished & aged |
| Tensile Strength (MPa) | 579 to 827 | 586 to 793 | 695 to 1310 |
| Yield Strength (0.2% Offset) (MPa) | 379 to 690 | 345 to 724 | 690 to 1034 |
| Elongation (%) | 22 to 40 | 15 to 35 | 20 to 30 |
| Hardness (Rockwell) | 20 to 85 B | 23 to 85 B | 27 to 38 C |
| Melting Point (°C) | 1300 to 1350 | 1300 to 1350 | 1315 to 1350 |
Nickel Based Alloy 400 Packaging
GNEE Group Alloy 400 Product Packaging
monel Alloy 400 Testing
GNEE Group Nickel Alloy 400 Testing
About Gnee Steel
Gnee Steel is a professional manufacturer of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy 800, Incoloy 800H/HT, Incoloy 825, Monel 400, Monel K500, and other high-temperature alloy materials. We specialize in the production and sales of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power generation, automotive, nuclear energy, and other fields, and we can provide customized alloy material solutions according to customer needs. For inquiries about alloy material prices or customized alloy material solutions, please feel free to contact us via email at ss@gneesteel.com to obtain a quotation.
FAQ
Q: What is Monel 400 material?
A: Monel 400 is a nickel-copper alloy that is resistant to corrosion from seawater and high-temperature steam, as well as salt solutions and alkaline solutions. Monel 400 is a nickel-copper alloy that exhibits excellent corrosion resistance in a variety of media.
Q: What is the chemical composition of Monel 400 alloy?
A: Monel 400 alloy contains approximately 63% nickel, 28-34% copper, and small amounts of iron, manganese, and other elements, giving it corrosion resistance in harsh environments.
Q: What is the difference between 400 and 316 stainless steel?
A: Monel 400 alloy exhibits excellent corrosion resistance in reducing environments (such as acidic or alkaline environments). On the other hand, 316 stainless steel performs better in oxidizing environments and has superior resistance to pitting and crevice corrosion in environments rich in chloride ions.
Q: What are the main applications of Monel 400 alloy?
A: Due to its durability in corrosive and high-temperature environments, Monel 400 alloy is widely used in marine components, chemical equipment, aerospace, and the oil and gas industry.
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