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Super Alloy HASTELLOY(r) C-4 alloy |
Related Metals: |
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Nicrofer 6619 hMo(tm)
HASTELLOY(r) C-4 alloy(tm)
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Specifications: |
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ASTM B574
ASTM B575
ASTM B619
ASTM B622
ASTM B626
DIN 2.4610
UNS N06455 |
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Chemistry Data |
Carbon |
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0.015 max |
Chromium |
|
14 - 18 |
Cobalt |
|
2 max |
Iron |
|
3 max |
Manganese |
|
1 max |
Molybdenum |
|
14 - 17 |
Nickel |
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Balance |
Phosphorus |
|
0.04 max |
Silicon |
|
0.08 max |
Sulphur |
|
0.03 max |
Titanium |
|
0.7 max |
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General Information |
Principal Design Features |
Alloy C-4 is a wrought nickel-chromium-molybdenum alloy for high temperature use with good corrosion resistance. |
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Applications |
This alloy is used to manufacture chemical process equipment, especially for process use at high temperatures where stainless steels do not have adequate strength and/or corrosion resistance. |
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Machinability |
Machinable by conventional techniques. |
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Forming |
Readily formed by conventional methods. |
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Corrosion Resistance |
Excellent cold and hot corrosion resistance to a great variety of chemical media, especially chlorine media. Media Concentration & Temp. Corrosion Rate mils per year Nitric acid 10% boiling 7.1 as welded |
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Welding |
All of the common methods of welding apply to this alloy. However excessive heat input should be avoided and submerged arc or oxy-acetylene welding should not be used as they can degrade corrosion resistance. |
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Heat Treatment |
Solution annealed at 1950 F and rapid quench. This is the normal condition in which product forms are supplied. |
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Forging |
The alloy can be hot forged at temperatures of 2150 F to 1750 F. |
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Hot Working |
Can be hot worked or hot extruded similar to stainless steels. |
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Cold Working |
Readily cold worked by conventional means. |
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Annealing |
Solution anneal at 1950 F followed by rapid quench. |
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Aging |
May be aged (after solution heat treatment) at 1200 F for 10 hours to somewhat improve ductility and yield strength without adversely affecting the ultimate tensile strength. |
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Hardening |
Hardened by cold working only, but normally used in the solution annealed condition. |
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Physical Data |
Density (lb / cu. in.) |
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0.312 |
Specific Gravity |
|
8.64 |
Specific Heat (Btu/lb/Deg F - [32-212 Deg F]) |
|
0.102 |
Electrical Resistivity (microhm-cm (at 68 Deg F)) |
|
748 |
Melting Point (Deg F) |
|
2600 |
Thermal Conductivity |
|
79 |
Mean Coeff Thermal Expansion |
|
6 |
Modulus of Elasticity Tension |
|
30.8 |
