50H (EI676)

For cores of interlamp and small-sized power transformers, chokes, relays, etc.

For cores mezhdulampovyh and small power transformers, chokes, relays and components of magnetic circuits that operate at elevated inductions without bias or with a small magnetic bias;

Classification

Country Section Category
CIS, Russia, Ukraine Precision alloys Soft Magnetic Precision Alloys

Chemical composition

Standard Fe, % Si, % Mn, % Cu, % Ni, % P, % C, % S, %
GOST 10994-74 48.33–50.55 0.15–0.3 0.3–0.6 < 0.2 49–50.5 < 0.02 < 0.03 < 0.02

Information on suppliers

Physical characteristics

Temperature, °C E⋅109, MPa α⋅106, K−1 ρ, kgm3 R⋅10−6, Ω⋅m
20 160 8200 0.45
100 8.9

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers σU, MPa σP, MPa ϵL, % ψ, % Treatment
Tape 440 145 35 60
Tape cold-work 780 685 3 15

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Tape 130
Tape cold-work 170

Standards

Standard Description
GOST 10994-74

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Cu % Copper
Ni % Nickel
P % Phosphorus
C % Carbon
S % Sulfur

Description of physical characteristics

Parameter Units of measurement Description
E⋅109 MPa Elastic modulus
α⋅106 K−1 Coefficient of thermal (linear) expansion (range 20°C–T)
ρ kgm3 The density of the material
R⋅10−6 Ω⋅m Electrical resistivity

Description of mechanical properties

Parameter Units of measurement Description
σU MPa Ultimate tensile strength
σP MPa Proportionality limit
ϵL % Elongation at break (longitudinal)
ψ % Reduction in cross section on fracture