All data is for information only------(Home)
PRODUCT DATA of Invar 36
MaterialInvar 36
Product Datasheetinvar36
invar36-from Ni institute
NILO and NILOMAG alloys
Invar-AM
General InformationBinary nickel-iron alloy containing 36% nickel. It has a very low room-temperature thermal expansion coefficient.
PrecautionsThis material should not be used above its thermal inflection point of 190C
Chemical CompositionFe 36Ni
Name of ManufacturerAcelorMittal
5 Rue Luigi Cherubini, 93212 Saint Denis Cedex, France
+33 (0) 71920000
info@imphy.com
www.imphy.com

Special Metals Corporation
3200 Riverside Drive, Huntington, WV, U.S.A. 25705-1771
+1 (304) 526-5100, +1 (800) 334-4626
+1 (304) 526-5643
www.specialmetals.com
EXPERIENCE IN PRACTICE
Equivalent DesignationsNilo 36, FeNi36, UNS K93600 & K93601, W. Nr. 1.3912
PHYSICAL PROPERTIES
Specific Gravity8.05
Magnetic PropertiesFerromagnetic
Curie Temperature279 °C
ELASTIC PROPERTIES
Tensile Modulus140 GPa
Shear Modulus57 GPa
Poisson Ratio0.25
ELECTRICAL PROPERTIES
Electrical Volume Resistivity8e-7 ohm.m
THERMAL PROPERTIES
Thermal Conductivity10 W/m.K
Data Quality: Manufacturer's data
Thermal Expansion Coefficient1.5 to 10.1 μstrain/°C
Data Quality: Manufacturer's data
Melting Range1430 °C
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
Stress Corrosion StatusHigh Resistance to SCC: Table 1
Remark: acc. to ECSS-Q-ST-70-36C
Data Quality: Design Data
MachinabilityBefore machining, the welded structures must be fully annealed. The machinability of Invar is similar to austenitic stainless steel such as AISI 304.
WeldingInvar 36 can be welded by the conventional methods. Caution must be taken so as not to overheat the molten metal. This will avoid spattering of the molten metal and pits in the welded area. When filler rod is required , Invar-rod has been used.
BrazingSilver and zinc-free alloys have been used for brazing Invar 36. This alloy should be annealed prior to brazing.
PlatingAlloy 36 can be chromium, silver and nickel plated by the usual methods used for ferrous alloys.
FLUID SYSTEMS COMPATIBILITY
Gaseous Oxygen (GOX)Meets the mechanical impact requirements. No batch test required.
Liquid Oxygen (LOX)Meets the mechanical impact requirements. No batch test required.
Low Pressure Hydrogen (LOH2)Fails some mechanical impact requirements. Needs batch test
High Pressure Hydrogen (HIH2)Fails mechanical impact