Nickel Aluminium Bronze Globe Valve

Nickel Aluminium Bronze is Copper alloy based material with the addition of;

Aluminium (Al)

Iron (Fe)

Nickel (Ni)

Manganese

These materials are also known as Aluminium Bronze or NAB

Common Material Specifications

Cu Al9 Fe5 Ni5

ASTM B148 UNS C95800

BS1400: AB2

EN1982: CC333G

Others

ASTM B148 UNS C95500 (10/4/2)

ASTM B148 UNS C95400 (11/4)

ASTM B148: 10 alloys in total

ASTM B62

ASTM B61

ASTM B150 C63200

Typical Properties

Tensile 580-640 N/mm2

Yield 240-250 N/mm2

Elongation 13- 15%

Hardness HB140

Density 7.6 g/cm3

Good castability, reasonable bearing material, easy machining, high strength

P/T Ratings Shipham SPT01 19 bar for class 150

EN1759-3:2003 15.5 bar class 150

Corrosion Properties

Good for seawater service

Especially good for pitting corrosion, stress corrosion and corrosion fatigue

Good fouling resistance

Additional Uses & Comments

Variety of wrought specifications available, good for trim material

Low magnetic permeability

Non-sparking; can be used for oxygen service

Reasonable thermal and electrical conductivity

Good Castabilty with suitable design

Weldable

Can be heat treated to improve seawater corrosion properties

Cautions

Low modulus of elasticity, but good yield stress

Raised face flanges non-standard

High temperature use

Observe pressure ratings at higher temperatures

Should not be used in polluted / H2S containing seawater (in common with 316 Stainless)