Super Alloy Nickel 220 is stocked by 4 North American distributors and produced by 4 large mills. Distributors will offer small quantity buys while mills will generally only sell large quantities, with delivery times anywhere from 10 to 50 weeks depending on size and form required
This material is stocked primarily in Flat Rolled Products by 3 distributors but is also available to a lesser extent in Wire Products, and Bar Products.
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For mill (large volume) production click here
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Specifications
The following specifications cover Super Alloy Nickel 220
Property Results
Chemistry Data : [top]
Carbon
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0.15 max |
Copper
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0.1 max |
Iron
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0.1 max |
Magnesium
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0.08 - 0.01 |
Manganese
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0.2 max |
Nickel
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Balance |
Silicon
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0.01 - 0.05 |
Sulphur
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0.008 max |
Titanium
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0.01 - 0.05 |
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Principal Design Features
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This alloy is very similar to Nickel 205, except with a chemical composition controlled specifically for application as cathodes in electronic tubes.
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Applications
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Cathode plates in electronic tubes.
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Machinability
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The alloy is machinable by conventional means. It is "gummy" in behavior however.
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Forming
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Easily formed by conventional means.
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Welding
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Weldable by all conventional methods.
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Heat Treatment
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May be annealed at 1950 F and air cooled. Otherwise not responsive to heat treatment.
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Forging
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No data, however the good ductility means it is forgeable.
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Hot Working
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See "Forging".
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Cold Working
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Readily cold worked by conventional means.
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Annealing
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Anneal at 1600 F and air cool.
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Hardening
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Hardens by cold work only.
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Physical Data : [top]
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Density (lb / cu. in.)
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0.32
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Specific Gravity
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8.8
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Specific Heat (Btu/lb/Deg F - [32-212 Deg F])
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0.109
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Electrical Resistivity (microhm-cm (at 68 Deg F))
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61
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Thermal Conductivity
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506
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Mean Coeff Thermal Expansion
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7.4
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Modulus of Elasticity Tension
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30
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Mechanical Data : [top]
Form |
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Strip |
Condition |
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Annealed |
Temper |
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70 |
Tensile Strength |
|
67 |
Yield Strength |
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22 |
Elongation |
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47 |
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Form |
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Strip |
Condition |
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Cold Drawn |
Temper |
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70 |
Tensile Strength |
|
88 |
Yield Strength |
|
70 |
Elongation |
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22 |
Rockwell |
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B90 |
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Form |
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Strip |
Condition |
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Hot Rolled |
Temper |
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70 |
Tensile Strength |
|
70 |
Yield Strength |
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30 |
Elongation |
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45 |
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Form |
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Strip |
Condition |
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Test Specimen Annealed |
Temper |
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400 |
Tensile Strength |
|
66 |
Yield Strength |
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20 |
Elongation |
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45 |
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Form |
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Strip |
Condition |
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Test Specimen Annealed |
Temper |
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700 |
Tensile Strength |
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52 |
Yield Strength |
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16.5 |
Elongation |
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61 |
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Form |
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Strip |
Condition |
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Test Specimen Annealed |
Temper |
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1000 |
Tensile Strength |
|
31 |
Yield Strength |
|
13 |
Elongation |
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68 |
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Form |
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Strip |
Condition |
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Test Specimen Annealed |
Temper |
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1200 |
Tensile Strength |
|
21 |
Yield Strength |
|
10 |
Elongation |
|
75 |
|
Form |
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Strip |
Condition |
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Test Specimen Annealed |
Temper |
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1400 |
Tensile Strength |
|
14.2 |
Yield Strength |
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7 |
Elongation |
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90 |
Videos :
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MSO currently has no videos available for this grade.
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