Nickel Alloy R405

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Fabrication and Heat Treatment
     Machinability
     Welding
     Heat Treatment
     Forging
     Cold Working
     Annealing
Other Designations
Applications

Introduction

Alloy R405 is a nickel-copper alloy with excellent corrosion resistance in an extensive range of marine and chemical environments. It has good mechanical properties from subzero temperatures up to about 480°C. The alloy is slightly magnetic at room temperature. It has excellent resistance to chloride ion stress corrosion cracking.

The following datasheet will provide an overview of nickel alloy R405.

Chemical Composition

The chemical composition nickel alloy R405 is outlined in the following table.

Element Content (%)
Nickel, Ni 63
Copper, Cu 28-34
Iron, Fe 2.5
Manganese, Mn 2
Silicon, Si 0.5
Carbon, C 0.3
Sulfur, S 0.025-0.06

Physical Properties

The following table shows the physical properties of nickel alloy R405.

Properties Metric Imperial
Density 8.80 g/cm3 0.318 lb/in3
Melting point 1300-1350°C 2370-2460°F

Mechanical Properties

The mechanical properties of nickel alloy R405 are displayed in the following table.

Properties Metric Imperial
Tensile strength 487-586.05 MPa 70-85 ksi
Yield strength 172.4-275-8 MPa 25-40 ksi
Elongation at break 35-50% 35-50%

Thermal Properties

The thermal properties of nickel alloy R405 are given in the following table

Properties Metric Imperial
Thermal expansion co-efficient (@-180°C/-300°F) 11.1 µm/m°C 6.1 µin/in°F
Thermal conductivity 16.5 W/mK 113 BTU.in/hrft².°F

Fabrication and Heat Treatment

Machinability

Nickel alloy R405 can be machined using high-speed tool steel.

Welding

Nickel alloy R405 can be welded using standard welding methods.

Heat Treatment

The alloy may be annealed, but it does not respond to heat treatment.

Forging

The alloy cannot be forged due to high sulfur content.

Cold Working

The alloy can be readily cold worked, especially in screw machine operations.

Annealing

Annealing of nickel alloy R405 can be performed at 927°C (1700°F) and air cooled.

Other Designations

Other designations that are equivalent to nickel alloy R405 include the following:

  • ASTM F468
  • ASTM B164 CLASS B
  • AMS 4674
  • ASTM F467
  • QQ N281

Applications

The following are the list of applications of nickel alloy R405:

  • Fasteners
  • Meter and valve parts
  • Screw machine products
  • Brine heaters, sea water scrubbers in tanker inert gas systems
  • Propeller and pump shafts
  • Feed water and steam generator tubing.

Tell Us What You Think

Do you have a review, update or anything you would like to add to this article?

Leave your feedback
Submit