32NK strip, rod, wire
Precision grade 32NK with a defined linear expansion thermal coefficient is used at pressure-tight joint with glass and for details with a polished surface. Linear expansion thermal coefficient CTP x106 is not more than 1,5 [1/°C] at a temperature range -60°+20°C and +20 +100°C. This alloy demonstrates rare physical characteristics: magnetic, elastic, thermal, electrical. It relates to a category of high alloys. Its high properties are caused by an accuracy of chemical composition, carefulness of manufacture and processing, absence of residual elements. Precision alloys with a defined TCLE on a basis of iron, nickel, copper, niobium, cobalt are used in precision machine tool building, innovative technologies, laser technology, for manufacturing accurate electronic devices, household units, metrological, measuring gauges.
Percentage composition of alloy:
|≤ 0.4||≤ 0.3||≤0.03||31.5 — 33||≤0.1||≤0.015||≤0.015||3.7 — 4.7|
|Short resistance to rupture [MPa]||sv|
|Flow limit (proportional limit load) for permanent change of form [MPa]||sT|
|Percent elongation at fracture [ % ]||d5|
|Impact hardness [ kJ/m2]||KCU|
|Brinell hardness [MPa]||HB|
Physical characteristics of the alloy
|Modulus of elasticity of first genus [MPa]||E|
|Required temperature for obtaining of actual features [Deg]||T|
|Linear expansion thermal coefficient [1/Deg] (range of temperatures 20°С)||a|
|Electrical unit-area resistance [Ohm-m]||R|
|Density of an actual material [kg/m3]||r|
|Heating capacity of material (or coefficient of conductivity for heat) [V/(m/deg)]||l|
|Specific heat of the material [J/(kg/deg)] (range of temperature 20°С)||CC|
|Coercive field (not higher) [A/m]||Hc|
|Magnetical inductive capacity (not higher) [mH/m]||Umax|
|Specific loss (not higher) 50 hz of frequency, magnetic induction 1.0 Т[ B/kg ]||P1.0/50|
|Magnetic T induction, magnetic field strength no less than 100, in magnetic field, [A/m]||B100|
— welding is possible at heating to 100−120°С and last heat treating
— in order to obtain a qualitative welded joints, it is necessary to perform the following operations: while welding to heat it up to 200−300°C, heat treating (annealing) after welding.
weldable without stint
— welding is done without further heat treating or previous heating.
32NK strip, rod, wire supplier
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