General Information
Chemical Composition
Physical Properties
Mechanical Properties
General Information
Monel R405 is the free machining version of Monel 400. It is a nickel-copper alloy with a controlled amount of sulfur added to provide sulfide inclusions that act as chip breakers during machining. Like Monel 400, alloy R-405 is resistant to sea water and steam at high temperatures as well as to salt and caustic solutions. Monel R405 is a solid solution alloy that can only be hardened by cold working. This nickel alloy exhibits characteristics like good corrosion-resistance, good weldability and high strength. A low corrosion rate in rapidly flowing brackish or seawater combined with excellent resistance to stress corrosion cracking in most freshwaters, and its resistance to a variety of corrosive conditions led to its wide use in marine applications and other non-oxidizing chloride solutions. This nickel steel alloy is particularly resistant to hydrochloric and hydrofluoric acidswhenthey are de-aerated. As would be expected from its high copper content, alloy R-405is rapidly attacked by nitric acid and ammonia systems.

The characteristics of Monel R405

Good machinability and is recommended for use with automatic screw machines
Resistant to seawater and steam at high temperatures
Excellent resistance to rapidly flowing brackish water or seawater
Excellent resistance to stress corrosion cracking in most freshwaters
Particularly resistant to hydrochloric and hydrofluoric acids when they are de-aerated
Offers some resistance to hydrochloric and sulfuric acids a modest temperatures and concentrations, but is seldom the material of choice for these acids
Excellent resistance to neutral and alkaline salt
Resistance to chloride induced stress corrosion cracking
High resistance to alkalis

Standard Inventory Specifications

UNS N04405
ASTM B 164

Common Trade Names

MONEL Alloy R-405
Alloy 405
Alloy R-405

Common Applications of R405

Alloy R-405 is chiefly used for automatic-screw-machine stock and it not generally recommended for other applications. Screw machine stock for fasteners and similar high production run items.
Meter and valve parts
Fasteners
Screw machine products

Chemical Composition

R405 Chemical Composition

Element

Percent by Weight

Ni

Nickel

(Plus Cobalt) 63.0 min.

C

Carbon

0.3 maximum

Mn

Manganese

2.00 maximum

Fe

Iron

2.5 maximum

S

Sulfur

0.025 – 0.060

Si

Silicon

0.5 maximum

Cu

Copper

28.0 – 34.00

Physical Properties

Physical Properties of R405 Bar


Density, g/cm³	8.80
Density, lb/in³	0.318
Melting Range °F	2370-2460
Melting Range °C	1300-1350
Modules of Elasticity	10³ ksi
Tension	26.0
Compression	26.0
Torsion	9.5
Poisson’s Ration	0.32
Curie Temperature °F	70-120
Curie Temperature °C	21-49

Mechanical Properties

Mechanical Properties of R405 Bar

Condition	Tensile Strength, ksi	Yield Strength (0.2% offset) ksi	Elongation %	Hardness Brinell	Hardness Rockwell B
Annealed	70-85	25-40	50-35	110-140	60-76
Hot Finished	75-90	35-60	40-30	130-170	72-86
Cold Drawn, As Drawn	85-115	50-105		160-245	85-23C

R405 Pipes
R405 Fittings
R405 Bars
R405 Sheets & Plates
R405 Coils & Strips
R405 Wires

R405 Seamless Pipe
Standard: ASTM, JIS, DIN, EU…
Grade: R405…
Size: OD: Φ4-Φ1219mm; WT:…
Introduction: Wisine its production capacity of stainless steel seamless pipe, roughly 2100 tons per month. As per your requirement…