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Tape, round, wire 47NKHR

Tape, round, wire 47NKHR

Characteristics of alloy 47NKHR

Alloy 47NKHR refers to the precision alloys with specified temperature coefficient of linear expansion x1000000 in the temperature range -70 +330ºC not above 8.5−11 [1/ºC], which is used for soldering with soft glass. This precision alloy has a rare physical and mechanical properties (magnetic, elastic, thermal, electric, etc.). Precision alloy has a number of properties characterizing the accuracy of the chemical. composition, thoroughness manufacturing and processing, the absence of various impurities. This category contains, as a rule, high-alloyed alloys. Precision alloy is mainly produced based on iron, Nickel, copper, niobium, cobalt. This group of alloys used in precision machine tools, in the production of various precision electronic devices, innovative technologies and laser equipment, household appliances, production of metrological and measuring instruments.

Physical characteristics 47NKHR.

R 10 9 r T C a 10 6 l E 10 — 5
900   20       1.4
Ohm·m kg/m3 Grad J/(kg·deg) 1/Deg W/(m·deg) MPa
Physical characteristics of this brand of alloy:
— 1st kind of modulus of elasticity, [MPa] — E
— The heat capacity of the material (or the ratio of teploprovodna.), in [W/(m·deg)] -l
— The temperature required to obtain these properties, [Grad] — T
— linear coefficient. temp. extensions to [1/Deg] (temp. the interval 20o), -a
— electrical resistivity, [Ohm·m] -R
— The density of this material, [kg/m3] -r
— the specific heat capacity of the material in [j/(kg·deg)] (temp. the interval 20 ° C) -C

Magnetic characteristics:

the coercive force (not more than) [A/m ] Hc
the magnetic permeability (not above) [ MH/m ] Umax
— specific losses (no higher) frequency 50 Hz, magnetic induction of 1.0 T [ W/kg ] P1.0/50
— T magnetic induction intensity of a magnetic field of not less than 100, in a magnetic field [ A/m ] B100

The chemical composition of the alloy 47NKHR, in percent.

C Si Mn P S Ni Cr Fe
to 0.05 to 0.3 to 0.4 to 0.015 to 0.015 46 — 48 4.5 — 6 45.2 — 49.5

Mechanical characteristics 47NKHR at temperatures of 20 °C.

Products Heat treatment. Size y KCU d5 sT blower SB Eg. Heat treatment.
  - mm % kJ / m2 % MPa MPa - -
  annealing       25   450−550   annealing
Mechanical characteristics:
— Short-term tensile strength in [MPa] blower SB
— Yield strength (limit of proportionality) for the residual strain, [MPa] sT
— at break elongation in [ % ] d5
— narrowing of the relative in [ % ] y
— the viscosity of the shock, in [ kJ / m2] KCU
— Brinell hardness [MPa] HB
weldability limited — welding is possible in the process of heating up to temp. 100−120? C and further thermal treatment
konovalivka in order to obtain quality welded joints, it is necessary to perform additional operations: during welding heating up to temp. 200−300°C, heat treatment (annealing) after welding.
Welded without any restrictions — welding is carried out without further heat treatment and pre-heating.

Buy at best price

The range of products from alloy 47NKHR, represented by LLC «AVEK global» can satisfy almost any consumer. This alloy belongs to the popular group of steel products due to its real value and variety of output options. Quality metal products is guaranteed absolute observance of all technological norms of production. In the absence of the base performance required of the product and if necessary other option products, we can produce custom sizes to order.