ASTM B564 / ASME SB564 Alloy 400 / N04400 Nickel Alloy Weld Neck Flange

ASTM B564 Alloy 400 UNS N04400 Forged Flange RF 1/2 Inch to 80 Inch

About MTSCO

MTSCO is an international supplier specializing in piping systems made of stainless steel, duplex steel, and nickel alloys. Our operations span four key business segments—MT Pipeline, Oilfield Services, MT Wire, and MT Plate—enabling us to provide comprehensive supply solutions for orders involving diverse specifications and large volumes. We hold key international certifications, including ISO, PED, and NORSOK M650. To ensure customer confidence, we have established a rigorous quality traceability system that maintains full transparency and traceability from raw material intake and core processing to final packaging and shipment. Please contact MTSCO for more information.

Specification Table

How Does MTSCO Achieve "Zero-Defect" Quality?

·Raw Material Control
Upon arrival at the facility, raw materials undergo verification of MTCs, material grades, specifications, and batch information, alongside PMI testing as required by the order.

·In-Production Control
Production processes—such as forging, heat treatment, and drilling—are monitored via process cards. Quality Control (QC) personnel document key stages with photographs.

·Pre-Shipment Inspection
Before shipment, we typically inspect appearance, dimensions, sealing surfaces, bolt holes, markings, and packaging integrity. Depending on project requirements, we can also arrange for PMI, PT, UT, mechanical property testing, chemical composition analysis, and third-party inspections by agencies such as SGS, TÜV, or BV.

Package Of Alloy 400 Flange

Product Standard Overview

ASTM B564 is the material standard for nickel alloy forgings, applicable to materials such as Alloy 400 (UNS N04400). For forged flanges, this standard serves as a critical reference for customers during procurement, defining requirements for chemical composition, mechanical properties, heat treatment conditions, and forging quality.

Material Properties of Alloy 400

Alloy 400 (UNS N04400) is a nickel-copper alloy characterized by excellent corrosion resistance and stable mechanical properties. Due to its strong performance in seawater, brine, and various acidic and alkaline environments, it is widely used in marine engineering, chemical processing equipment, and piping connections handling corrosive fluids.

Application Fields

· Seawater transport systems

· Marine engineering piping

· Marine equipment connection lines

· Chemical processing systems

· Brine systems and evaporation equipment

· Heat exchanger and condenser connections

· Corrosive fluid transport systems

· Marine and chemical service piping connections

FAQ

Q1: Can these be purchased together with pipes and fittings?
A1: Yes. MTSCO can supply pipes, tubes, fittings, and flanges together to facilitate consolidated shipping.

Q2: Are Alloy 400 flanges suitable for seawater environments?
A2: Alloy 400 exhibits excellent corrosion resistance in seawater, brine, and certain chemical media; it is commonly used in marine service and seawater system piping.

Q3: What inspections are typically performed on these flanges before shipment?
A3: Standard inspections cover appearance, dimensions, PMI, marking, and packaging condition. PT, UT, or third-party inspections can also be arranged based on project requirements.