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Alloy 42 Manufacturer and Supplier
- 500 Metric Ton / Metric Tons per Month
- Shanghai
- T/T
Product Details
Brand Name: | Brilliance | Place of Origin: | China | Model Number: | BL-0095 |
Type: | Nickel Bar | Application: | Thermostat Rods | Grade: | FeNi42 |
Powder Or Not: | Not Powder | Ni (Min): | 42% |
Product Description
Description:
Alloy 42 is an iron-nickel alloy, consisting of 42% nickel. This controlled expansion alloy has low thermal expansion characteristics over a range of temperatures and has been developed over time with ceramics in mind.
Alloy 42 Properties & Information
Low Thermal Expansion alloys are perfectly suited for use in glass and ceramic seals, providing metallic feed‐throughs from interior to exterior components. Another great use of Alloy 42 is within electrical components. Alloy 42, and similarly Kovar, should always be manufactured according to exact requirements. In ceramics, a low coefficient of thermal expansion (CTE) of must be matched by the feed‐through metal.
Brilliance Special Steel ensures that every alloy is manufactured to provide the ideal coefficient.
Alloy 42 Mechanical Properties
Metallurgical Condition Annealed, Descaled
Yield Strength KSI (MPa) 36 (248)
Tensile Strength KSI (MPa) 71 (490)
Hardness HB
Elongation 50mm >40
Alloy 42 Chemistry
Nickel Ni 42
Iron Fe Balance
Alloy 42 Physical Properties
Co Efficient of Thermal Expansion
30-300°C 10-6/°C 4.0 - 4.7
30-450°C 10-6/°C 6.7 – 7.4
Density g/cm³ 8.15
Curie Temp °F 626, °C 330
Melting Point °F 2597, °C 1425
Modulus of Elasticity at 20°C MPa 148
Specific Heat J/g- °C 0.50
Thermal Conductivity at 20°C J/cm.s.°C 12.5
Resistivity at 0°C Μohm.cm 63
Poisson's coefficient
The History of Alloy 42
Alloy 42 is widely used for military applications. It's hermeticity and attachability to low‐CTE die to low‐CTE lead frames have been cited as 2 main advantages of using Alloy 42. However, when placed into plastic components Alloy 42 has proven to provide disastrous results.
Brilliance Special Steel understands that mismatching can take place with Alloy 42, whether that be a result of surface mount (SM) solder joints connecting materials with different CTEs, or when solder bonds have CTEs that differ from the CTE of solder. We'll work alongside you to ensure that the desired result is found, with little-to-no SM solder joint failures.
Alloy 42 and Kovar not only cause significant global and local thermal expansion mismatches, but are inherently more difficult to solder because of the low solubility of nickel and iron, the main constituents of these alloys. Pull tests of solder joints show that, under the best of circumstances, a solder joint that includes an Alloy 42 or Kovar surface is only half as strong as one made to copper surfaces.
Contact Us
- Changzhou Brilliance Special Steel Co., Ltd.
- Contact nameDavid
- Phone86-519-89986880
- AddressXinbei Changzhou,Jiangsu
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