01
Monel 400 Round Bar
Solid sections from 6 to 500 mm for shafts, valve stems and machined fittings.
Request Availability →Monel 400 Bar and Rod
Nickel-copper bar and rod for seawater, chemical process, and sour-service equipment, supplied in standard and custom sizes.
NiCu Window Control
Copper is held within the 28.0–34.0% ASTM B164 band and confirmed on the mill certificate for every heat.
Fastener-Grade Bar Option
Bar for F468 and F467 alloy 400 bolting is selected with hardness documented where your project requires it.
Condition-Matched Release
Hot-worked, annealed, stress-relieved or cold-drawn bar is fixed against your machining route before production starts.
PRODUCT OVERVIEW
About Monel 400 Bar and Rod
Monel 400 bar and rod serve pumps, valves, shafts, and fasteners exposed to seawater, hydrofluoric acid systems and reducing chemical media. Monel 400 (UNS N04400, W.Nr. 2.4360) pairs roughly two-thirds nickel with copper in one solid-solution alloy.
Southerly Alloy supplies round bar, rod, and finished sections to ASTM B164 and ASME SB164 in hot-worked, annealed, stress-relieved, and cold-drawn conditions. Where higher strength is required, Monel K-500 bar is quoted as a companion grade.
PRODUCT FEATURES
Key Features of Monel 400 Bar and Rod
Monel 400 is a nickel-copper alloy combining strong seawater resistance with useful strength in annealed and cold-worked conditions. Southerly Alloy supplies UNS N04400 bar and rod to ASTM B164 in hot-worked, annealed, stress-relieved, and cold-drawn conditions, with custom sizes, surface finishes, and mill test documentation. Marine fastener, pump shaft, and heat-exchanger projects are typical buyers of this bar.
Monel 400
Seawater and Salt-Solution Resistance
Performs in flowing and stagnant seawater where many stainless grades pit or crack.
01
Resistance to Reducing Media
Handles hydrofluoric acid, other non-oxidizing media, and alkalis under controlled service conditions.
02
Strength by Cold Work
Cold drawing lifts yield strength from the 25 ksi annealed minimum toward 85 ksi as-worked levels.
03
Toughness at Low Temperature
Retains ductility and impact strength in cryogenic and sub-zero service.
04
Condition Range
Supplied hot-worked, annealed, stress-relieved, or cold-drawn to match the ASTM B164 tables.
05
Size and Section Flexibility
Round, square, hex, and flat bar from stock range up to forged sections.
06
Machining and Fabrication
Machines with standard carbide practice and welds with ERNiCu-7 filler metal.
07
Certification and Traceability
EN 10204 3.1 mill certificates with heat numbers travel with every delivery.
08
WHY CHOOSE US
Why Choose Monel 400
Your Monel 400 enquiry goes to the team that schedules nickel-copper melting and finishing every week. We check your drawing against real mill capability, so tolerance, condition, and finish promises stay realistic. One contact owns your order from quotation to shipment.
01
Specification Compliance
Your grade, condition, diameter, and finish are checked against ASTM B164 before production starts.
02
Quality and Traceability
Heat numbers, EN 10204 3.1 certificates, and PMI records are compiled per delivery.
03
Flexible Supply
One bar or one container load runs through the same qualified nickel-copper route.
04
Responsive Service
Quotations answer with conditions, size, and document commitments, not vague lead times.
MANUFACTURING PROCESS
Reliable Production For Critical Applications
Monel 400 bar and rod are produced from refined nickel and cathode copper melted into the UNS N04400 balance. Each heat is worked and heat-treated to the ordered ASTM B164 condition, with composition and test results recorded against the heat number.
01
Charge Preparation
Refined nickel and copper are weighed to the UNS N04400 balance, with impurity limits set by ASTM B164.
02
Melting
The charge is melted in induction or electric-arc furnaces under practices that limit gas pickup and oxide content.
03
Casting
Molten metal is cast into ingots with solidification controls that limit segregation across the section.
04
Hot Working
Ingots are forged and rolled into billets and bars, refining the cast structure as the section is reduced.
05
Heat Treatment
Annealing or stress relief is applied to the ordered condition to set strength, ductility and machinability.
06
Cold Finishing
Drawing, peeling or centreless grinding brings cold-drawn bar to final diameter, tolerance and surface.
07
Surface Preparation
Pickling, polishing or rough turning delivers the finish your drawing calls for.
08
Inspection and Release
Chemistry, tensile properties, dimensions and surface are verified against the purchase specification before release.
Manufacturing Facility
MANUFACTURING CAPABILITY
Advanced Production For Nickel Alloy Products
Monel 400 bar and rod are produced in standard and custom diameters, with condition, finish, and cut length agreed before production. The figures below show the melting, working, and inspection capacity behind that commitment. Mixed-condition orders run as one campaign.
20,000+ m²
Factory Area
melting, forging, drawing and inspection workshops on one site.
50+
Production Machines
equipment covering hot working, cold finishing, and final inspection.
600 Tons
Monthly Capacity
nickel-copper and nickel alloy bar output across standard and custom sizes.
30+
Technical Engineers
metallurgists who confirm condition, tolerance, and documentation needs at quotation.
4
Delivery Conditions
hot-worked, annealed, stress-relieved, and cold-drawn bar from one route.
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
Monel 400 bar leaves the works only after the ordered ASTM B164 requirements are demonstrated on the heat. Composition is checked by spectrometer, mechanical tests are run on the delivered condition, and dimensions are checked against your drawing. Records stay with the material for incoming verification.
01
Material Verification
Spectrometer analysis confirms the UNS N04400 balance before bar enters production.
02
Dimensional Inspection
Diameter, straightness, and length are measured to the applicable B164 tolerance class.
03
Testing and Inspection
Tensile, hardness, and, where specified, UT or PMI are run on the ordered condition.
04
Certification and Traceability
EN 10204 3.1 documents link every bar back to its heat number.
PRODUCT FORMS
Available Product Forms
Round bar and rod carry most Alloy 400 enquiries, with square, hex, flat and forged sections covering fabrication and machining needs. Each form below is a separately quoted product.
02
Monel 400 Round Rod
Smaller-diameter stock drawn to controlled straightness for precision machining.
Request Availability →
03
Monel 400 Bright Bar
Cold-drawn bright surface for automatic lathes and appearance-critical parts.
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04
Monel 400 Cold-Drawn Bar
Higher strength from the as-drawn condition, with stress relief where straightness matters.
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05
Monel 400 Hex Bar
Hexagonal sections sized across flats for nuts, bolting, and multi-flat parts.
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06
Monel 400 Square and Flat Bar
Square and rectangular sections cut to your width, thickness, and length.
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07
Monel 400 Forged Bar
Larger diameters and custom sections with a controlled wrought structure.
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08
Centreless-Ground Rod
Ground diameter and straightness for shafting, spindles, and precision components.
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APPLICATIONS
Engineered For Demanding Industries
Monel 400 bar is specified where seawater, non-oxidizing acids, or alkali solutions defeat stainless steels. Most Monel 400 bar work reaches us through marine, chemical, and hydrocarbon projects. Fastener makers and machine shops buy rod for sour-service and seawater bolting.
Discuss Your Application →
01
Marine Shafts and Hardware
Propeller shafts, pump shafts, and rudder stock exposed to seawater flow.
02
Seawater Fasteners
Studs, bolts, and nuts machined from bar for splash-zone and immersion service.
03
Chemical Process Equipment
Valve stems, pump components and mixer shafts in reducing and alkaline media.
04
Hydrofluoric Acid Systems
Hardware for HF handling where specified by qualified process design.
05
Oil and Gas Sour Service
Wellhead and valve components for H2S-bearing service with hardness limits agreed.
06
Heat-Exchange and Boiler Parts
Bars machined into tubesheet, baffle and fixture components in steam service.
07
Pump and Valve Machining Stock
Rod supplied for high-volume machining of impellers, sleeves and trim.
08
Brine and Salt-Handling Plant
Fixtures, supports and fasteners in evaporators and salt concentration systems.
TECHNICAL INFORMATION
Technical Specifications
Detailed technical information including chemical composition, mechanical properties, standards and available dimensions.
Chemical Composition
The limits below follow ASTM B164 for UNS N04400 bar and rod, with nickel as the balance of the melt. Tighter impurity ranges can be melted if your specification calls for them. The mill test certificate governs final acceptance.
| Element | Content |
|---|---|
| Nickel (Ni) plus Cobalt (Co) | 63.0% min. |
| Copper (Cu) | 28.0–34.0% |
| Iron (Fe) | 2.5% max. |
| Manganese (Mn) | 2.0% max. |
| Carbon (C) | 0.30% max. |
| Silicon (Si) | 0.50% max. |
| Sulfur (S) | 0.024% max. |
Mechanical Properties
Minimums are taken from ASTM B164 for UNS N04400 rod and bar and change with condition and section size. Cold-drawn as-worked values apply to rounds under 1/2 inch; stress-relieved values cover 1/2 to 3-1/2 inch rounds. Confirm the ordered condition at quotation.
| Condition / Section | Tensile Strength, min. | Yield Strength (0.2%), min. | Elongation, min. |
|---|---|---|---|
| Hot-worked, rounds to 305 mm (12 in.) | ≥80 ksi (552 MPa) | ≥40 ksi (276 MPa) | 30% |
| Hot-worked, annealed, all sizes | ≥70 ksi (480 MPa) | ≥25 ksi (170 MPa) | 35% |
| Cold-worked, stress-relieved, rounds 12.7–88.9 mm (1/2–3-1/2 in.) | ≥87 ksi (600 MPa) | ≥60 ksi (415 MPa) | 20% |
| Cold-worked, as-worked, rounds under 12.7 mm (1/2 in.) | ≥110 ksi (760 MPa) | ≥85 ksi (585 MPa) | 8% |
Requirements above follow the ASTM B164 mechanical tables; the applicable edition and the ordered condition decide final acceptance.
Physical Properties
Typical room-temperature values below support design calculations rather than acceptance testing. Monel 400 is only slightly ferromagnetic at ambient temperature, and the Curie range sits just above normal working temperatures.
| Property | Value |
|---|---|
| Density | Approx. 8.80 g/cm³ |
| Melting range | Approx. 1300–1350 °C |
| Modulus of elasticity | Approx. 179 GPa |
| Thermal conductivity at 20 °C | Approx. 21.8 W/m·K |
| Specific heat at 20 °C | Approx. 427 J/kg·K |
| Electrical resistivity at 20 °C | Approx. 0.51 µΩ·m |
| Thermal expansion, 20–100 °C | Approx. 13.9 µm/m·K |
| Curie temperature | Approx. 21–49 °C |
| Magnetic behaviour | Slightly ferromagnetic at ambient temperature |
Standards
ASTM B164 is the governing product specification for bar and rod, with ASME SB164 used in pressure equipment. The designations below are equivalent identifiers for cross-reference, not separate approvals. Quote the standard together with condition and section in your inquiry.
| Standard / Designation | Scope |
|---|---|
| ASTM B164 | Nickel-copper alloy rod, bar and wire — UNS N04400 |
| ASME SB164 | ASME edition for rod, bar and wire |
| SAE AMS 4675 | Nickel-copper alloy bars, forgings and rings |
| UNS N04400 | Material designation for Monel 400 |
| W.Nr. 2.4360 / NiCu30Fe | European designation for Monel 400 |
| JIS NW 4400 | Japanese designation |
| BS 3076 NA13 | British nickel-copper bar standard |
| DIN 17743 / DIN 17752 | Nickel-copper wrought alloys — chemistry and bar |
Dimensions
Ranges below reflect normally produced sections; exact availability depends on condition, finish and quantity, confirmed at quotation. Tolerances follow ASTM B164 for the ordered condition. State diameter, section, length and finish in the inquiry.
| Product Form | Typical Supply | Length |
|---|---|---|
| Round Bar | 6–500 mm dia. | Cut to length or random |
| Round Rod | 3–50 mm dia. | Cut to length |
| Bright Bar | 6–150 mm dia. | Cut to length or random |
| Square Bar | 10–150 mm | Cut to length or random |
| Hex Bar | 10–150 mm A/F | Cut to length or random |
| Flat Bar | 3–100 mm thick × 10–300 mm wide | Cut to length |
| Forged Bar | 100–500 mm dia. or forged section | Cut to length |
| Precision-Ground Rod | 3–100 mm dia., tight tolerance | Cut to length |
Diameters and lengths outside these ranges are reviewed against the production route before quotation.
Surface Finishes
Finish is selected for the next operation, whether machining allowance, fabrication or a finished appearance. Availability depends on diameter, condition and order quantity. Each finish is agreed with the order, not assumed from stock.
| Surface Condition | Typical Use |
|---|---|
| Hot-worked (as-rolled or forged) | Parts that will be machined to size |
| Annealed and pickled | Scale-free surface for fabrication |
| Cold drawn | Close diameter control with a bright surface |
| Stress relieved | Straightness and dimensional stability for drawn bar |
| Peeled | Uniform diameter with machined skin for further turning |
| Centreless ground | Tight diameter and straightness for shafting |
| Polished | Reduced roughness for product-contact and visible parts |
| Rough turned | Controlled machining allowance on large or forged bar |
TECHNICAL DOCUMENTATION
Download Technical Datasheet
Get detailed information including specifications, standards, dimensions and material properties.
HOW TO START
Start Your Order in 6 Simple Steps
One coordinator keeps your Monel 400 order moving from first message to shipment. Specification changes are agreed in writing before material is cut. Most quotations carry a confirmed lead time, and trial quantities help you verify a size first.
1
Send an Inquiry
Give the grade, ASTM B164 condition, diameter, length, quantity and finish.
2
Review Requirements
We match the ordered condition, tolerance and finish to the production route.
3
Receive a Quotation
Price and lead time come from size, quantity, condition and documents.
4
Confirm the Order
Grade, dimensions, inspection level and delivery terms are recorded before cutting.
5
Production and Inspection
The heat is worked, heat-treated and tested to the specified condition.
6
Shipment and Delivery
Certificates and export documents ship with the bar; terms are confirmed with you.
What Our Clients Say
Feedback from buyers and engineers who source nickel alloy materials from Southerly Alloy.
★★★★★
“The Monel 400 round bar we ordered for seawater pump shafts arrived with EN 10204 3.1 certificates, and the as-supplied diameters machined clean without any rework.”
★★★★★
“Cold-drawn Monel 400 rod came within drawing tolerance in both batches, and the heat analysis on the certificate matched the UNS N04400 limits for our incoming review.”
★★★★★
“We ran a one-bar trial of stress-relieved bar before the full order; straightness and surface were as agreed, so the production batch followed immediately.”
CERTIFICATIONS & QUALITY DOCUMENTATION
Certifications & Quality Documentation
Our production and inspection processes are certified to international standards, and every delivery ships with EN 10204 3.1 mill test certificates.
ISO 9001:2015
Quality Management System
PED 2014/68/EU
Pressure Equipment Directive
ASTM / ASME
Material Standards Compliance
EN 10204 3.1
Mill Test Certificates
FAQ
Frequently Asked Questions
Which ASTM specification covers Monel 400 bar and rod?
ASTM B164 / ASME SB164.
What is your MOQ for Monel 400 bar?
One bar for most stock diameters.
What are your trade terms for Monel 400 bar?
Mainly FOB; EXW and CIF can be quoted as well.
How is the price of Monel 400 bar calculated?
Mainly on weight, with the copper share fixed at the quotation date.
What is the lead time for Monel 400 bar?
7-15 days for stock sizes; about 25 days for custom diameters.
Do you provide EN 10204 3.1 or 3.2 certificates?
Yes. 3.1 comes with every heat; 3.2 is arranged on request.
Can Monel 400 bar be supplied for fastener production?
Yes. Monel 400 bar can be supplied for fastener production, subject to the specified material condition and mechanical requirements. Hardness and material documentation can be provided for ASTM F467 and F468 applications as required.
Can you arrange third-party inspection or PMI?
Yes. PMI, hardness, and third-party witness can all be booked.
Can I get Monel 400 bar in custom diameters?
Yes. Drawing, peeling, and grinding cover sizes outside the stock range.
What export documentation is included?
CI, PL, B/L, and MTC with every shipment; origin certificates on request.
REQUEST FOR QUOTATION
Need A Custom Alloy Solution?
Send the grade, ASTM B164 condition, diameter, quantity, and finish, and we will reply with price, lead time, and certificates in one message. Specifications are fixed before production, so the bar you approve is the bar that arrives.
Monel 400 bar and rod are available in stock sizes or produced to your drawing, with single-bar trials accepted for many common diameters.
