Global Steel Supply & Processing
UNS N04400 | ASTM B127-25 | NICKEL-COPPER ALLOY
CORROSION-RESISTANT PLATE PROCUREMENT
Source Alloy 400 plate with the grade, temper, thickness and traceability your fabricator requires. Send a material list, inspection scope and destination for a quotation tailored to your order.
Review ASTM B127 plate specifications ↓Confirm the correct rolled-plate standard, mill condition, size and material documents before your equipment enters fabrication.
| Commercial designation | Monel 400 / Alloy 400 |
| UNS / material reference | N04400 / W.Nr. 2.4360 |
| Alloy family | Solid-solution nickel-copper alloy |
| ASTM plate specification | ASTM B127-25 — rolled nickel-copper plate, sheet and strip |
| ASME material reference | ASME SB-127, when specified for code-related equipment |
| Plate conditions | Annealed or as-rolled, subject to applicable plate specification and purchase order |
| Dimensions | Thickness × width × length; actual size range confirmed during quotation |
| Surface condition | Finish, scale condition and cleaning requirements specified by order |
| Edges and flatness | Specify cut edge, surface condition, flatness and tolerance requirements |
| Reference density | Approx. 8.84 g/cm³ (ATI plate data) |
| Quality documents | MTC / heat analysis / mechanical testing / PMI as requested |
| Delivery information | Quantity, destination, shipping terms and inspection requirements |
Alloy 400 plate availability, producer, origin, stock condition and delivery scope are confirmed per order. Company-scale production and inventory figures describe the combined steel business.
Grade condition changes mechanical performance. The values shown here represent ATI's listed annealed-plate requirements; the ordered ASTM edition and MTC govern material acceptance.
Reference tensile range of 485–585 MPa; specify annealed material where forming and ductility are key to the fabrication plan.
Hot-rolled, as-rolled plate typically shows higher strength. Request the applicable test acceptance values and material condition in the quotation.
Confirm the tensile testing, permissible dimensions and code requirements on the purchase order and material certificate.
Confirm heat-specific chemistry through your mill test certificate. Values below summarize the published ATI plate chemistry in mass percent.
| Element | Composition, wt.% |
|---|---|
| Nickel (Ni) | 63.0–70.0 |
| Copper (Cu) | 28.0–34.0 |
| Iron (Fe) | ≤ 2.50 |
| Manganese (Mn) | ≤ 2.00 |
| Cobalt (Co) | ≤ 1.00 |
| Silicon (Si) | ≤ 0.50 |
| Carbon (C) | ≤ 0.30 |
| Sulfur (S) | ≤ 0.024 |
Plan plate condition and preparation around your fabrication requirements, including finish, nominal thickness, straight edges and tolerance.
Specify surface finish, cleaning level and protective handling appropriate to the project.
Specify cut edges, flatness and dimensions for the receiving fabricator.
Match the alloy to the medium and service exposure. Use the operating conditions in your RFQ to support material and fabrication review.
Commonly specified for selected marine components and water-handling equipment; review flow, crevice conditions and fouling risk.
Used in suitable alkaline and selected acid-handling systems where chemistry and process conditions support Alloy 400 selection.
Established uses include certain hydrofluoric acid operations. Concentration, aeration and temperature remain critical engineering inputs.
Alloy 400 plate may be specified for engineered assemblies where corrosion performance, formability and traceability shape the material schedule.
Plate components for selected seawater service, marine plant and fluid-handling assemblies.
Nickel-copper alloy plate parts for vessels, heat exchangers and process skids.
Specified plate details for marine water-handling and auxiliary equipment.
Plate blanks for selected chemical processing vessels and equipment assemblies.
Custom plate parts and partitions for engineered heat-transfer equipment.
Fabricated housings and plate details specified by equipment manufacturers.
Corrosion-resistant plate items for selected petroleum and chemical plant service.
Cut sizes and prepared blanks supplied to project drawings and test requirements.
Specify the plate condition and size around forming, welding and machining plans. Alloy 400 is commonly fabricated into equipment parts using procedures suited to nickel-copper materials.
Estimate mass from nominal size and the ATI plate density of 8.84 g/cm³. Use measured and agreed shipment weight for final commercial documents.
Formula: thickness (mm) × width (mm) × length (mm) × 0.00000884 = kg per plate. Estimate uses nominal thickness and density.
Include cut sizes, quantity, material condition and inspection scope. We can review the material list alongside delivery and packing instructions.
Coordinate a project-based nickel-copper plate enquiry with a steel supply partner experienced in documentation, packing and export procurement.
Our actual annual production reaches 8 million metric tons across the company-wide steel business.
Manufacturing ↗Our regular combined inventory totals 1 million metric tons of steel. Monel 400 plate is checked separately by size, condition and origin.
Steel Inventory ↗Specify MTC, heat analysis, mechanical acceptance data and optional PMI for your equipment records.
Quality Control ↗Align grade, quantities, inspection scope, protective packing and destination in one purchase enquiry.
Request plates, blanks or cut profiles to match your equipment drawing. Processing methods and achievable tolerances are confirmed from the plate thickness and part geometry.
Identify the verification records your project requires for material acceptance and traceable fabricated parts.
Share an itemized material list to confirm available dimensions, quantity, origin, condition and the documentation associated with your request.
ASTM B127 and the requested material condition.
Thickness, width, length and quantity for each item.
MTC, testing, PMI and any project acceptance requirements.
Delivery terms, destination port, packaging and timing.
Grade-specific stock and material availability are verified against your requested dimensions and condition.
Choose a handling and packing plan appropriate to finished nickel-copper plate surfaces, shipment size and destination.
Different nickel alloy families address different service media and temperature requirements. Compare the grades before completing a project material schedule.
ASTM B127-25 covers rolled nickel-copper alloy UNS N04400 plate, sheet and strip. Specify plate dimensions, condition, testing and certificate requirements when ordering.
Annealed plate is supplied for ductility and fabrication needs, while as-rolled material has condition-specific mechanical properties. Select the condition by your design and purchase specification.
Alloy 400 is used in selected marine, alkaline and reducing chemical environments. Suitability depends on fluid chemistry, oxidizing contaminants, aeration, temperature, flow and equipment design.
Send ASTM B127 / UNS N04400, dimensions, quantity, material condition, MTC or PMI requests, packing requirements and destination port.
Send your required grade, dimensions, quantity and destination. Our team will review the inquiry.
