Menu
Invar alloy belongs to high nickel alloy based on iron, nickel content is up to 36%, has a very low coefficient of linear expansion below 100℃, also called inflatable steel.The Invar trademark was originally held by the French alloy company [TJC STEEL]Infi.Invar is short for Invariability, meaning volume does not vary.
Standard Control CHINA YB/T 5241-2005 4J36 FRANCE AFNOR NF A54-301 Fe-Ni36 GERMANY DIN 17745:2002 Ni36,1.3912 AMERICA ASTM F1684-2005 UNS K93603 ASTM B753-2013[TJC STEEL] T-36 Component Specification GRADE 4J36 1.3912 K93603 T-36 C ≤0.05 ≤0.05 ≤0.05 ≤0.15 Si ≤0.30 ≤0.30 ≤0.40 ≤0.40 Mn 0.20~0.60 ≤0.50 ≤0.60 ≤0.60 P ≤0.020[TJC STEEL] -- ≤0.015b ≤0.025 S ≤0.020 -- ≤0.015b ≤0.025 Cr -- -- ≤0.25 ≤0.25 Ni 35.0~37.0 35.0~37.0 36.0 36.0 Co -- -- ≤0.50 ≤0.50 Zr -- -- ≤0.10a -- Ti -- -- ≤0.10a -- Al -- -- ≤0.10a -- Mg -- -- ≤0.10a -- Fe -- -- -- -- Annotatio:a.Al+Mg+Zr+Ti≤0.025%;b.P+S≤0.025%. Commercial Brand FRANCE Aperam Alloys Imphy (Imphy Alloys) Invar® AMERICA CARPENTER Invar 36® Alloy ATI[TJC STEEL] ATI 36™ Special Metals NILO alloy 36 GERMANY VDM Metals Pernifer® 36 VAC VACODIL 36 JAPAN NIPPON YAKIN NAS 36 ITALY Valbruna AG SG5 Physical Properties density g/cm3 heat conductivity coefficient W·(m·K)-1 elasticity modulus MPa hardness HV 8.12 0.109~0.134 134000 140 strength of extension MPa elongation % erishen value mm magnetic permeability mH·m-1 500 30 9.8 2.04 Linear expansion coefficient (YB/T 5241-2005) The ratio of the change in length [TJC STEEL]of a solid to its length at 0℃ for each change in temperature of a solid is called the coefficient of linear expansion ▽4J36 Typical Linear Expansion Coefficient. T average coefficient of linear expansion ā,10-6/℃ 20℃~50℃ 0.6 20℃~100℃ 0.8 20℃~200℃ 2.0 20℃~300℃ 5.1[TJC STEEL] 20℃~400℃ 8.0 20℃~500℃ 10.0 Material Characteristics: Most metals and alloys expand in volume when heated and contract in volume when cooled. However, due to its [TJC STEEL]ferromagnetism, the Inwatt alloy has abnormal thermal expansion in a certain temperature range, and its expansion coefficient is extremely low, sometimes even zero or negative.Its characteristics are summarized as follows: (1) Small coefficient of expansion The average expansion coefficient of Inwa alloy is generally 1.5×10-6/℃, and the volume does not change at room temperature [TJC STEEL]from -80℃ to +100℃. (2) They were not strong The carbon content of the alloy is less than 0.05%, the hardness and strength is not high, the tensile strength is about 517MPa, [TJC STEEL]the yield strength is about 276MPa, the Vickers hardness is about 160, generally can be through cold deformation to improve the strength, in the strength is improved at the same time still has good plasticity. (3) Low thermal conductivity The thermal conductivity of [TJC STEEL]watt alloys is 10W/m·K, only one-third of the thermal conductivity of 45 steel. (4) High plasticity and toughness The ductility, toughness, elongation, reduction of section and impact toughness are all very high. The elongation is [TJC STEEL]δ=30~45% and the shrinkage is δ=50~70%.Impact toughness αK=130~310 J/cm2. (5) Variations of other properties Because of the high nickel content in the Intile alloy, the hardenability and quenchability of the steel are improved, and the gas resistance, corrosion resistance and wear resistance of the steel are improved. Applications: 4j36 due to the advantages of low expansion, is indispensable to precision instrument structure material, it is widely used in electronics industry and precision instrument industry and other areas that are sensitive [TJC STEEL]to size requirements, such as: double metal materials, magnetic materials, measuring instruments with fixture, astronomical telescope components, optical instruments, CFRP with metal molds, antenna parts, FPD with shielding framework, high precision printing in framework, and semiconductor with a check by machining fixture, semiconductor, etc. Comments are closed.
|
TJC STEELNEWS& KNOWLEDGE TJC Archives
October 2024
Categories |
TJC IRON& STEEL CO.,LTD
TEL:+86-371-86107816; +8613674998777
EMAIL: [email protected]
HENAN SCALE IMP&EXP CO.,LTD
ZHENGZHOU ZHIYUAN IMP&EXP CO.,LTD
COPYRIGHT © 2015
EMAIL: [email protected]
HENAN SCALE IMP&EXP CO.,LTD
ZHENGZHOU ZHIYUAN IMP&EXP CO.,LTD
COPYRIGHT © 2015