Alloy 400 pipe (UNS N04400)

Looking for strong Alloy 400 pipes for demanding marine or hydrocarbon environments? We supply high-grade nickel-alloy pipes directly from stock. From single pipe orders to complete tailored piping packages to meet your exact project specs. We deliver the quality and speed your operations require.

High-quality Alloy 400 pipes

Designed for critical piping in corrosive service

Marine resistance

Excels in harsh seawater environments

Strong material performance

Maintains integrity under high stress

Chemical resistance

Highly resistant to aggressive acids

Hydrocarbon service

Proven reliability in petroleum refining

Broad temperature range

Reliable performance up to 1000°F/540°C

Alloy 400 pipes in stock

Responsive Specificatie Tabel
Standard Material Size range Schedules
ASTM/ASME (S)B 165 UNS N04400 ½″ – 6″ Schedule 10S to Schedule 80S

Looking for  Alloy 400 pipe? We hold UNS N04400 seamless pipe in stock for immediate delivery, alongside custom solutions for specific project demands. Every order is backed by the complete certification required for critical applications.

Certified supply & additional information

  • EN 10204 / 3.1 certified
  • Dual certified in accordance with ASTM / ASME
  • Material in compliance to International specification
  • Random lengths or cut-to-length
  • Stock delivery times

Upon request

  • Bevelling
  • Additional testing
  • Third-party inspection

Chemical composition

Alloy 400 (UNS N04400) is a solid-solution nickel-copper alloy, engineered to deliver an exceptional balance of corrosion resistance, strength, and toughness.

The limits below serve as a quick reference. Final material compliance is always verified by the EN 10204 3.1 Mill Test Certificate and your specific order requirements.

Element Limit (%)
Nickel + Cobalt (Ni+Co)63.0 min.
Copper (Cu)28.0 – 34.0
Iron (Fe)2.5 max.
Manganese (Mn)2.0 max.
Carbon (C)0.3 max.
Silicon (Si)0.5 max.
Sulfur (S)0.024 max.

Typical physical and mechanical properties of Alloy 400

The values below give a general indication of the typical physical and mechanical properties associated with Alloy 400. These figures should be treated as typical material data only, since actual values can vary depending on form, size and supply condition.
Property Unit Typical value
Density lb/in³ 0.318
Melting range °F 2370 – 2460
Modulus of elasticity 10³ ksi 26.0
Torsional modulus 10³ ksi 9.5
Poisson’s ratio - 0.32
Thermal conductivity at 70°F Btu-in/h-ft²-°F 151
Specific heat at 70°F Btu/lb-°F 0.102
Electrical resistivity at 70°F µΩ·m 0.511
Tensile strength ksi 70 – 85
Yield strength (0.2% offset) ksi 25 – 45
Elongation % 35 – 50

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Mail us

sales@maass-special-alloys.com

Call us

+31 (0)30 8200 370