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47NHP wire, rod, bar made of alloy 47NHP


Grade analogue W. Nr. Aisi Uns En Order
47НХР EI677 Buy from stock, view availability

Characteristics of alloy

47NHP alloy relates to precision alloys with a defined linear expansion thermal coefficient x1000000 at a temperature range -70 +440ºC of not higher than 8.5−11 [1/ºC]. Alloy is applied in making springs, hermetically sealed contacts reed relay, joining with mica and ceramics, junction with a soft glass. This precision alloy possesses rare physical, mechanical characteristics (magnetic, elastic, heating, electrical etc.) It is characterized with an accuracy of chemical composition, preciseness of manufacture, processing, and absence of residual elements. It is the high-alloyed alloy. Precision alloys are manufactured on a basis of iron, nickel, copper, niobium, cobalt. This group of alloys is used in modern innovative technologies, at manufacturing electronic units, household appliances, details of laser techniques, metrologic and measuring equipment.

Physical properties

R 10 9

r T C

a 10 6


E 10— 5

900 8200 20       1.4
Ohm-m kg/m3 Degree J/(kg/degree) 1/Degree V/(m/degree) 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
Electrical unit-area resistance [Ohm-m] 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
Magnetic 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

Percentage composition of 47NHP alloy

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

Mechanical properties at a temperature 20 °C

Products Heat treating Thickness y KCU d5 sT sv F.e. Heat treating
-   mm kJ/m2 % MPa MPa - -  
Strip GOST 10 14080−78 annealing 2.5 450−550   490−610        

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] 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
weldable without stint welding is done without further heat treating or previous heating


«Auremo» company proposes to buy a wire, a rod, a strip 47NHP for the most favorable price. There is a wide range of goods of a high quality in stock. You can easily buy a wire, a rod, a strip 47NHP. Price depends on order quantity and additional conditions of supply. If you buy products by wholesale, you will be given special discounts. An availability of products and efficiency of delivery are conditioned by a fact that we have offices in Moscow, St. Petersburg and cities of Central Europe.

Buy at a bargain price

All products are certificated. A quality is guaranteed by rigorous technology compliance of manufacture. Our managers are always ready to answer any questions and to give a knowledgeable assistance. A large assortment will not leave you without a choice. You can easily buy a wire, a rod, a strip 47NHP. Just connect us with a convenient way to you. Phone numbers, e-mail addresses of the closest company’s offices are located in section «Contacts». Order a service «Call-back» and our manager will help you to choose products that will fit your individual requirements. A wire, a rod, a strip 47NHP are always in stock. Their price depends on order quantity and additional conditions of supply.