Precision nickel iron alloy 42 4J42 invar 42 Feni42 hot forged round rod flat bar

Alloy 42 is a 41% nickel-iron controlled expansion alloy which has been used in a wide variety of glass-to-metal sealing applications. It exhibits a low and normally consistent coefficient of thermal expansion over the range 20-300oC. This enables its use in glass-to-metal or ceramic-to-metal sealing applications and in tooling for aerospace composites. Invar 42 also has a coefficient of thermal expansion matched to silicon, and ceramic materials such as alumina, beryllia, and vitreous glass compounds. It can be found as a sealing material in semiconductor packages, electronic tubes, CRT electron guns, microelectronic components, thermostat rods, vacuum devices, and electric industrial lamps.

Products Details

Our company Principle is  " Quality first, Customer first". CHANGZHOU DLX ALLOY CO, LTD was established in 2002 and has got Iso9001 International Quality Management System Certificate and SGS Certificate. Our factory is professional in researching and producing special alloy material. From melting, drawing, heat treatment, finishing and testing .We offer nickel-based, copper-based, and iron-based alloys, including super alloy, welding materials, anti-corrosion alloy, precision alloy, FeCrAl alloy, NiCr alloy, CuNi alloy, thermocouple and Foam Metal etc, in the form of wire, strip, ribbon, bar, tube, plate.Could you help to design the product? Yes, we have excellent R&D team, OEM/ODM orders   Do you provide free samples? Yes, we can provide a free sample for testing,buyer should bear all the shipping costs.   What is your payment terms? T/T,L/C,D/A,D/P,Western Union,MoneyGram,Paypal   What is the lead time? Usually sample lead time is 7 days after payment has been confirmed.

ASTM

UNS

Werkstoff

EN

 

 

 

 

F30

K94100

1.3917

FeNi 42

Alloy 42

Nilo 42

Invar 42

4J42

 Melting and inflection points
Alloy Melting point Inflection point
°C °F °C °F
Alloy 42 1435 2615 370 700
  Thermal conductivity at 20°C (68°F)
Alloy W/m°C Btu in/ft²h °F
Alloy 42 10.5 72.8
  Electrical resistivity
Temperature Microhm cm (ohm.circ mil/ft)
°C °F Alloy 42
20 68 61 (367)
100 212 70 (421)
200 392 87 (523)
300 572 101(608)
400 752 110 (662)
500 932 116 (698)
600 1112 120 (722)
 We can supply type of : wire, ribbon,strip, bar, sheet 1.Cold rolled strips: 0.03~0.l0×180~250mm >0.10~1.00×10~250mm >1.00~2.50×100~250mm 2. Cold drown wires: 0.l0~6.00mm 3. Hot rolled flat products: 4.50~20.0×50~250mm 4. Hot forged bars: Φ20.0~100.0mm / bar

C

Si

Mn

P

S

Ni

Al

Cr

Co

Fe

≤0.05

≤0.30

≤0.80

≤0.025

≤0.025

40-42

≤0.10

≤0.10

≤0.50

Bal

 Our company Principle is  " Quality first, Customer first". CHANGZHOU DLX ALLOY CO, LTD was established in 2002 and has got Iso9001 International Quality Management System Certificate and SGS Certificate. Our factory is professional in researching and producing special alloy material. From melting, drawing, heat treatment, finishing and testing .We offer nickel-based, copper-based, and iron-based alloys, including super alloy, welding materials, anti-corrosion alloy, precision alloy, FeCrAl alloy, NiCr alloy, CuNi alloy, thermocouple and Foam Metal etc, in the form of wire, strip, ribbon, bar, tube, plate.

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