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52N strip, wire, sheet, rod


Grade analogue W. Nr. Aisi Uns En Order
52N Buy from stock, view availability

Characteristics of 52N grade

An alloy of grade 52N with a high saturation induction (1,5T) and permeability relates to alloys of precision group with a defined linear expansion thermal coefficient (1 000 000* LCTE at a temperature range -70 +550 ºC up to 11−11.4 [1/ºC], It is used for joints with a soft glass. The main composition of precision alloys is iron that is alloyed with copper, nickel, niobium, cobalt. Precision alloys possess unique physical and mechanical characteristics (magnetic, elastic, heating, electrical etc.). They are characterized by an accuracy of chemical composition, a preciseness of manufacture, processing, and absence of residual elements. A temperature of melting is 1450 °C.

Percentage composition of 52N alloy:

P Cu, Cr Ni S C Si Mn Fe
≤0.015 ≤ 0.2 51.5 — 52.5 ≤0.015 ≤0.05 ≤ 0.2 ≤ 0.4 46.42 — 48.5

Iron-nickel alloys are smelted in an open arc furnace. They possess a small variation of electrical resistance (not more than 5%), which are defined by force and existent magnetic orientation. This alloy must be alloyed with such elements as copper, mangan, silicon for strengthening of electromagnetic properties. A smelt is done in a vacuum or inert gas environment. Semi-fabricates of minimal thickness is manufactured with method of cold-rolled stamping with the further annealing. It is done for increasing magnetic properties. Permalloy of this grade has improved features and an increased magnetizing. This alloy is characterized by a significant magnetic sensitivity in relation to external changes.

Mechanical properties at a temperature 20 °C.

T E 10- 5 C a 10 6 l r R 10 9
Degree MPa J/(kg/degree) 1/Degree V/(m/degree) kg/m3 Ohm-m
20 1.6       8200 420

Mechanical properties at a temperature 20 °C.

Dimension sv KCU Heat treating Size sT d5 F.e. y
Sheet 450−550   Annealing          
  MPa kJ/m2 - mm MPa % - %

Physical characteristics

Description Identification
Modulus of elasticity of first kind [MPa] E
Heating capacity of material (or coefficient of conductivity for heat) [V/(m/degree] l
Required temperature for obtaining of actual features, [Degree] T
Linear expansion thermal coefficient [1/degree] (range of temperatures 20°С) a
Specific electrical resistivity [Оhm-mm2/m] 0,81 R
Density of a material, [kg/m3] r
Specific heat of a material [J/(kg/degree)] (range of temperature 20°С) C

Magnetic characteristics

Description Identification
Coercive field (not higher) [A/m] Hc
Magnetical inductive capacity (not higher) [mH/m] Umax
Saturation induction 2 T [V/kg] P1.0/50
Magnetic T induction, magnetic field strength no less than 100, in magnetic field, [A/m] B100

Mechanical characteristics

Description Identification
Short resistance to rupture [MPa] sv
Flow limit (proportional limit load) for permanent change of form [MPa] sT
Percent elongation at fracture [ % ] d5
Contraction ratio [ % ] y
Impact hardness [ kJ/m2] KCU
Brinell hardness [MPa]-1 125−195 HB


Type Description
limitedly weldable welding is possible at heating to 100−120°С and last heat treating
hardly weldable 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
without stint
welding is done without further heat treating or previous heating

52N strip, wire, sheet, rod supplier

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