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Precision alloys are metal materials with special physical properties (such as magnetic, electrical, thermal and other properties). The vast majority of precision alloys are based on ferrous metals, and only a few are based on non-ferrous metals. Usually include magnetic alloys (see magnetic materials), elastic alloys, expansion alloys, thermal bimetals, electrical alloys, hydrogen storage alloys (see hydrogen storage materials), shape memory alloys, magnetostrictive alloys (see magnetostrictive materials), etc.
Elastic alloy is an indispensable material for manufacturing precision instruments and nicety machines.Elastic alloys are provided with the characteristics of high elastic module,high strength,heat-resistance,corrosion-resistance,non-magnetic,stable elastic module in a certain range of temperature,low expansion coefficient ad high quality.Elastic alloys include constant elastic alloys and high elastic alloy.
For Constant elastic alloy,we have 3J53,3J58,mainly for producing frequency components,such as precision sensors,precision spring,mechanical filter vibrators,turning forks for frequency resonances,reeds and films in resonance relays.
Features:
Constant elastic alloys are characterized by a low frequency-temperature coefficient and good mechanical behavior under -40ºC~+80ºC.(Refer to our standard YB/T 5256-1993,YB/T 5254-1993)
Chemical content:
| Alloy | C | P | S | Si | Mn | Ni | Cr | Mo | Ti | Al | Fe |
| Max | |||||||||||
| 3J53 | 0.05 | 0.02 | 0.02 | 0.8 | 0.8 | 41.5-43.5 | 5.2-5.8 | / | 2.3-2.7 | 0.5-0.8 | Bal. |
| 3J58 | 0.05 | 0.02 | 0.02 | 0.8 | 0.8 | 43.0-43.6 | 5.2-5.6 | / | 2.3-2.7 | 0.5-0.8 | Bal. |
Physical Properties at Aging and Heat Treatment:
| Alloy | Frequency temperature coefficient Bf(x10-6/ºC) -40ºC~+80ºC | Longtitudinal vibration wave transfer speed V(x10-6/ºC) |
| 3J53 | A:0~20 B:0~10 | 4.80~5.05 |
| 3J58 | -5~5 | 4.75~5.00 |
Physical Properties at Cold Working and Aging Treatment:
| Alloy | Dencity (g/cm3) | Average Coefficient Of Linear Expansion α20~100ºC(x10-6/K) | Saturation Magnetic Induction B600(T) | Saturated Magnetostrictive Coefficient λs(x10-6) | Curie Temperature (ºC) | Resistivity ρ(μΩ.m) |
| 3J53 | 8.0 | 8.1 | 0.7 | +5 | 110 | 1.1 |
| 3J58 | 8.0 | 8.1 | 0.8 | +5 | 130 | 1.1 |
Mechanical Properties at Cold Working and Aging Treatment:
| Alloy | Elastic Modulus E(Mpa) | Shear Modulus G(Mpa) | Tensile Strength (Mpa) | Elongation (%) | Vickers Hardness (HV) |
| 3J53 | 176500~19100 | 63500~73500 | 1450 | ≥6 | 420 |
| 3J58 | 176500~19100 | 63500~73500 | 1450 | ≥10 | 400 |
| Grade | 3j1 3j2 3j3 Ni36CrTiAl Ni36CrTiAlMo8 |
| Sharp | wire, bar/rod, strip, sheet, tube |
| Standard | GB/T15018,YB/T5231-2005,YB/T5241-2005,YB/T5235-2005etc. |
| Basic performance | It is divided into low-expansion alloy and fixed-expansion alloy, the latter is also known as sealing alloy.Expansion alloy besides has the specific thermal expansion coefficient, according to the different USES also requires a good sealing property, weldability and corrosion resistance, machinability and cutting, and in the use of expansion characteristics caused by the temperature range there is no obvious change of phase transformation, its product is commonly bar, sheet, strip, wire and tube and so on. |
| Expansion alloy applications | It is widely used in glass, metal and ceramic sealing in avionics and instruments, electric vacuum industry and other electronic devices, electric light source and other fields. |
| Inconel | Inconel 722, Inconel 725, Inconel X-750, Inconel 625, Inconel 686, Inconel 690, Inconel 702, Inconel 706, Inconel 713C, Inconel 600, Inconel 601, Inconel 602CA, Inconel 617, Inconel 718. |
| Incoloy | Incoloy 945, Incoloy A-286, Incoloy 901, Incoloy 903, Incoloy 907, Incoloy 909, Incoloy 925, Incoloy 926, Incoloy 330, Incoloy 800, Incoloy 800H, Incoloy 800HT, Incoloy 801, Incoloy 840, Incoloy 20, Incoloy 205, Incoloy 208 |
| Hastelloy | Hastelloy C 276, Hastelloy G, Hastelloy W, Hastelloy X, Hastelloy G-30, Hastelloy G-35, Hastelloy G3, Hastelloy N, Hastelloy S, B-2, Hastelloy B-3, Hastelloy C2000, Hastelloy C22 |
| Haynes | Haynes 75, Haynes 244, Haynes 25, Haynes 263, Haynes 282, Haynes 556, Haynes 188, Haynes 230, Haynes 233, Haynes 242 |
| Monel | Monel 400, Monel K-500, Monel R405, Monel 401, Monel 404, Monel 405. |
| Nimonic | Nimonic 91, Nimonic C263, Nimonic PE11, Nimonic PE16, Nimonic PK33, Nimonic 80A, Nimonic 96, Nimonic 90, Nimonic 901, Nimonic 105, Nimonic 115 |
| Other Nickel | Waspaloy, Multimet N155, Mumetal 80, Rene 41, Kovar, Maraging 250, Maraging 300, Maraging 350, MP159, MP35N, Alloy 46, Alloy 48, Alloy 52, Alloy 42, Alloy 45, Cobalt alloy 6b, Custom 455, Invar 36, Invar 42, Nickel 200, Nickel 201 |
