Aluminium Bronze

NES833 DEFD STAN 02-833

This is a nickel aluminium bronze similar to CA104 but manufactured to the requirements of the Ministry of Defence. The MOD stipulate a nickel content that exceeds the iron content to improve the general corrosion performance.

Other requirements include a minimum impact value on sizes above 15mm diameter and a full ultrasonic inspection to conform to Grade 1 material.

This grade has primarily been developed for offshore and marine applications and offers a high strength, an excellent corrosion resistance in seawater and other aggressive media and a high wear and abrasion resistance.

• Aluminium is the main alloying metal added to copper in contrast to standard bronze (copper/tin)
• Higher strength and corrosion resistance compared to other bronzes
• Resistance to corrosion in seawater
• Material reacts with atmospheric oxygen to create a tough layer of aluminium oxide
• Commonly used in the marine sector, oil and petrochemical industries (non sparking environments)
• Used in the manufacture of valves and fasteners

Download our current material list

Material Stocklist.pdf

Chemical Properties

-
-
Min
Max
Cu
Copper
BAL
-
Sn
Tin
10.0
0.10
Pb
Lead
-
0.05
Zn
ZInc
-
0.40
Ni
Nickel
4.5
5.5
Al
Aluminium
8.5
10.0
Fe
Iron
4.0
5.00
Mn
Manganese
0.50
Si
Silicon
-
0.10
-
Impurities
-
0.50

Mechanical Properties

Size Range
Ø mm
0.2%PS
N/mm²
UTS
N/mm²
Elongation
%
Impact Joules
1 1/4
400
700
10
10
6 - 15mm
325
700
12
12
15 - 25mm
320
650
12
12
25 - 100mm
325
700
12
12
100mm+
320
650
12
12