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K94100 / Invar 42 Nickel Iron Special Alloys For Automotive With Curie Temperature 360℃

China Machinery Metal Jiangsu Co., Ltd.

K94100 / Invar 42 Nickel Iron Special Alloys For Automotive With Curie Temperature 360℃

Brand Name : CMMC

Model Number : As per specification

Certification : ISO, PED, AS etc.

Place of Origin : CMMC in CHINA

MOQ : Negotiable

Price : Negotiable

Payment Terms : D/P, L/C, T/T

Supply Ability : 300 metric tons per month

Delivery Time : 60-90 days

Packaging Details : Water prevent, seaworthy transport, mill's export standard packing

Material : UNS K94100, a binary nickel-iron alloy containing 42% nickel

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Nickel iron alloy 42 (K94100, Invar 42) semi-products for automotive and industrial electric lamp bulbs

1 PRODUCT

Nickel iron alloy 42 (UNS K94100, W.Nr. 1.3917, Invar 42) bar, tube, strip, wire, forging for automotive and industrial electric lamp bulbs.

Alloy 42 is available in following standard semi-finished forms:

Sheet

Delivery condition: Hot or cold rolled, heat treated, descaled or pickled

Strip

Delivery condition: Cold rolled, heat treated, pickled or bright annealed

Bar and Rod

Delivery condition: Forged, rolled, drawn, heat treated, oxidized, descaled or pickled, turned, peeled, ground or polished

Wire (profile, round, flats, square)

Delivery condition: Drawn bright, ¼ hard to hard, bright annealed in rings, containers, on spools and headstocks

Wire rod

Delivery condition: hot rolled (dia.5.5mm to 40mm)

Others

Other shapes and dimensions such as discs, rings, seamless pipes and forgings can be requested.

2 EQUIVALENT DESIGNATION

W.Nr. 1.3917, Ni42, FeNi42(AFNOR), Nilo® alloy 42, Invar® 42, 4J42, UNS K94100

3 OVERVIEW

Alloy 42 is a binary nickel-iron alloy containing 42% nickel. It has a low, and nominally constant, coefficient of expansion over the range 20-300°C (85-570°F).

4 APPLICATION

Alloy 42 is used for tooling for aerospace composites, thermostat rods, for semi-conductor lead frames, in thermostatic bi-metal strip, and for metal to glass and ceramic-to-metal sealing applications in microelectronic components, vacuum devices, automotive and industrial electric lamp bulbs, transformer and capacitor bushings.

5 CHEMICAL COMPOSITION (wt%):

Ni Fe Al Co Mn Si C P S Cr
41.5-42.5 Balance ≤0.10 ≤0.10 ≤0.60 ≤0.20 ≤0.05 ≤0.020 ≤0.020 ≤0.50

6 PHYSICAL PROPERTY

Density at 20°C: 8.11 g/cm3 (0.293lb/in3)

Modulus of elasticity in tension: 21.8 x 103 ksi (150 x 103MPa)

Curie temperature: 680°F (360°C)

Table 4-1 Melting and inflection points

Alloy Melting point Inflection point
°C °F °C °F
Alloy 42 1435 2615 370 700

Table 4-2 Thermal conductivity at 20°C (68°F)

Alloy W/m°C Btu in/ft²h °F
Alloy 42 10.5 72.8

Table 4-3 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)

Table 4-4 Typical thermal expansion of Alloy 42

K94100 / Invar 42 Nickel Iron Special Alloys For Automotive With Curie Temperature 360℃

Figure 1 Typical thermal expansion of Alloy 36 and Alloy 42.

7 METALLOGRAPHY

In the soft annealed condition, Alloy 42 has a cubic face-centered crystal structure.

8 CORROSION RESISTANCE

Refer to NACE (National Associate of Corrosion Engineers) for recommendations.

9 MECHANICAL PROPERTIES

Table 5-1 Typical mechanical properties of Alloy 42 in annealed condition

Temperature Tensile Strength Yield Strength (0.2% Offset) Elongation on 50mm (2 inch) Reduction of Area
°C °F MPa ksi MPa ksi % %
20 68 490 71 250 36 43 72
100 212 450 65 210 30 43 72
200 392 450 65 130 19 43 72
300 572 410 59 110 16 44 72
400 752 370 54 93 13 44 71
500 932 310 45 93 13 47 66
600 1112 210 30 93 13 56 55

Table 5-2 Hardness

Alloy Condition HV HRB
Alloy 42 Annealed 140 max. 76 max.
Full hard 240 min. 99 min.

10 WORKING INSTRUCTION

Forging

Forging stock should be heated quickly to 2150/2200ºF (1175/1205ºC) and soaked for a short time only to avoid penetration of sulfur and oxygen from the reheat furnace atmosphere. Forging should not be performed below 1700/1800ºF (925/980ºC), but advice should be taken on actual finishing temperatures and their effects on material properties.

Cold Heading

Alloy 42 may be swaged or cold upset.

Heat treatment

K94100 / Invar 42 Nickel Iron Special Alloys For Automotive With Curie Temperature 360℃

Machining

Following are typical machining parameters

K94100 / Invar 42 Nickel Iron Special Alloys For Automotive With Curie Temperature 360℃

Joining

The alloy may be welded using conventional methods.

Three processes are typically used for welding Invar 42 for tooling applications:

◘ Gas Metal Arc Welding (GMAW aka MIG)

◘ Gas Tungsten Arc Welding (GTAW aka TIG)

◘ Submerged Arc welding (SAW)

11 STANDARD SPECIFICATION

ASTM B753 Plate, sheet

DIN 17745 Plate, sheet, bar, rod

SEW 385 Plate, sheet, bar, rod

AFNOR NF A54-301Composition

ASTM F29 Wire

ASTM F30 Sheet, strip, rod, bar, tubing and wire

ASTM F1684 Plate, sheet, bar, rod

MIL-I-23011 CL 5 Plate, sheet

12 COMPETITIVE ADVANTAGE:

(1) More than 50 years experience of research and develop in high temperature alloy, corrosion resistance alloy, precision alloy, refractory alloy, rare metal and precious metal material and products.
(2) 6 state key laboratories and calibration center.
(3) Patented technologies.

(4) Ultra-purity smelting process: VIM + IG-ESR + VAR

(5) Excellent high performance.

13 BUSINESS TERM

Minimum order quantity Negotiable
Price Negotiable
Packing details Water prevent, seaworthy transport, mill’s export standard packing
Mark As per order
Delivery time 60-90 days
Payment terms T/T, L/C at sight, D/P
Supply ability 300 metric tons / Month


Product Tags:

stainless steel alloy

      

high performance alloys

      

Nickel iron alloy 42 Bar

      
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