Nov 16 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Other Designations
Fabrication and Heat Treatment
Machinability
Forming
Welding
Heat Treatment
Forging
Hot Working
Cold Working
Annealing
Hardening
Applications
Introduction
Super alloys have good creep and oxidation resistance. They are also known as high performance alloys, and can be formed in different shapes. They can be strengthened by work hardening, precipitation hardening, and solid-solution hardening. They have the ability to function at very high temperatures and under severe mechanical stress, and also where high surface stability is required. Cobalt-based, nickel-based, and iron-based alloys are three types of super alloys.
Nickelvac 400™ is a nickel-copper alloy having resistance to sea water corrosion, different kinds of acids and other corrosive media. The following datasheet gives an overview of Nickelvac 400™.
Chemical Composition
The chemical composition of Nickelvac 400™ is given in the following table.
|
Element |
Content (%) |
|
Nickel, Ni |
66 |
|
Copper, Cu |
31 |
|
Iron, Fe |
1.2 |
|
Manganese, Mn |
1 |
|
Silicon, Si |
0.25 |
|
Carbon, C |
0.15 |
|
Sulfur, S |
0.01 |
Physical Properties
The following table shows the physical properties of Nickelvac 400™.
|
Properties |
Metric |
Imperial |
|
Density |
8.83 g/cm³ |
0.319 lb/in³ |
|
Melting point |
1330°C |
2425°F |
Mechanical Properties
The mechanical properties of Nickelvac 400™ are outlined in the following table.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
551 MPa |
79900 psi |
|
Yield strength (at strain 0.200%) |
241 MPa |
35000 psi |
|
Elongation at break |
40% |
40% |
|
Reduction of area |
70% |
70% |
|
Hardness, Rockwell B |
70 |
70 |
Other Designations
Other designations that are equivalent to Nickelvac 400™ include:
|
AMS 4574 |
AMS 4731 |
ASTM B165 |
ASTM F467 |
DIN 2.4366 |
|
AMS 4575 |
ASTM B127 |
ASTM B366 |
ASTM F468 |
MIL N-24106 |
|
AMS 4675 |
ASTM B163 |
ASTM B513 |
ASTM F96 |
MIL T-1368 |
|
AMS 4730 |
ASTM B164 CLASS A |
ASTM B564 |
DIN 2.4360 |
MIL T-23520 |
|
QQ N281 |
|
|
|
|
Fabrication and Heat Treatment
Machinability
Nickelvac 400™ can be machined using conventional machining methods which are used for iron-based alloys. Machining operations are performed using commercial coolants. High-speed operations such as grinding, milling or turning, are performed using water-based coolants.
Forming
Nickelvac 400™ can be formed using all conventional techniques
Welding
Nickelvac 400™ is welded using gas-tungsten arc welding, shielded metal-arc welding, gas metal-arc welding, and submerged-arc welding methods
Heat Treatment
Nickelvac 400™ does not respond to heat treatment.
Forging
Nickelvac 400™ has good forgeability.
Hot Working
Nickelvac 400™ has good hot working capacity.
Cold Working
Nickelvac 400™ can be cold worked using standard tooling.
Annealing
Nickelvac 400™ is annealed at 927°C (1700°F). It can be stress-relief annealed at 566°C (1050°F) for 1 to 2 hours followed by cooling.
Hardening
Nickelvac 400™ is hardened by cold working.
Applications
Nickelvac 400™ is used in chemical plant equipments as they have good corrosion resistance. They are also used in pumps, marine fixtures, and piping systems for sea water applications.