NES 833 Part 2
Chemical Composition NES 833 Part 2
Element |
% by weight |
|
|
Not Less than |
Not More than |
Aluminum (see Note 1) |
8.5 |
10.0 |
Iron (see Note 2) |
4.0 |
5.0 |
Nickel (see Note 2) |
4.5 |
5.5 |
Manganese |
|
0.50 |
Copper |
Remainder |
|
Impurities |
||
Zinc |
|
0.40 |
Lead |
|
0.05 |
Tin |
|
0.10 |
Silicon |
|
0.10 |
Magnesium |
|
0.05 |
Total Impurities |
|
0.50 |
NOTE 1 - Aluminum to at least commercially pure 99.7% with maximum magnesium level of 0.05 % is to be used |
||
NOTE 2 - Nickel content is to be greater than iron content. |
Mechanical Properties
Typical mechanical properties of the alloy are
Grade |
NES 833 Part 2 |
Tensile Strength (MPa) |
680 |
Proof Stress 0.2% (MPa) |
325 |
Elongation A5 (%) |
17 |
Physical Properties |
|
Density |
7.5 gm / cm3 |
Electrical Resistivity |
0.172 x 10-6 oms |
Thermal Conductivity |
42 W/m.k at 20oC |
NES 833 Part 2 has high corrosion resistance; particularly in marine environments. It also has excellent resistance to cavitations erosion. It largely retains its strength and hardness upto 400o C. It is also resistant to high temperature scaling up to 1000oC.
The dimensional Accuracy & Tolerance of our fastener products are as per the relevant international standards.
Our fasteners are widely used by marine project industries like Ship Building, Pressure Vessels and Heat Exchanger manufacturers, Marine application valve manufacturers and so on.
We are one of the leading manufacturers of high precision NAB (Nickel Aluminum Bronze) fasteners in India.
GOVIND METAL CO.
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