low thermal expansion matching thermal expansion coefficient glass to metal hermetic sealing

{"cid":"91223373","title":"Factory Custom Ultra Thin 4J32 Super Invar Alloy Wire Fe-Ni-Co Low Thermal Expansion Precision Wire 0.05mm-3.0mm for Aerospace Optical Laser Resonator Electronic Hermetic Sealing","imgUrl":"https:\/\/img.chinax.com\/nimg\/2b\/da\/07d1148dfee3527090fd14d435f1-200x200-1.jpg","attrs":{"Price":"negotiation","Brand Name":"Huona","Model Number":"4J32","Minimum Order Quantity":"negotiation","Delivery Time":"7-20days","Payment Terms":"T\/T","Resisivity(\u03bc\u03a9\/cmf,20\u2103)":"80-90","Tensile strength(N\/m\u33a1)":"550-750mpa","Elongation(%)":"\u226520%","Packaging Details":"Spool + Carton + Wooden Case","Hardness(Hv)":"160-220Hv","Melting point(\u2103)":"1430-1450\u2103","Density(g\/m\u00b3)":"8.1","Supply Ability":"100 Tons per year","Max continuous Operating Temperature(\u2103)":"400","Certification":"ISO9001, SGS, and so on","Thermal Conductivity(W\/m\u00b7K, 20\u00b0C)":"12-15","Place of Origin":"China"}}