ASTM A753 Type 4 / Alloy 79 Soft Magnetic Alloy

Name: ASTM A753 Type 4 / Alloy 79 Soft Magnetic Alloy
Brand: Hiperoy

Standards

Mat. No. 2.4545 2.4595 2.4596

EU FeNi48

AISI/ASTM -

UNS UNS N14080

Other Magnifer 79042
Carpenter HyMu 801
Hipernom1
Moly-Permalloy
Permalloy 80
Mumetal3

ASTM A753 Type 4 is an alloy containing 80% nickel, 5% molybdenum, and iron. It is used as an alloy that requires maximum permeability with minimum hysteresis.

Chemical Composition & Mechanical and Physical Properties

C % 0.020 max

Mn % 0.50 max

Mo% 5.00 nom

Ni% 80.00

Si% 0.30 max

P% 0.020 max

S% 0.01

Cr% 0.30 max

Typical DC Magnetic Properties

Saturation Induction - Gausses 8700

Maksimum Permeability 230,000

Coercive Force Oersteds 0.015

Coercive Force - A/m 1.19

Typical AC Magnetic Properties

Core Loss W/lb @ 400 Hz &20k G N/A

B-40 Permeability @60 Hz 45,000

Density (lb/cu in) 0.316

Melting Point °C 1454

Electrical Resistivity (ohm-cir mil/ft) 349

Thermal Conductivity (W/cm°C) 0.35

Specific Heat Cal/g-°C -

Thermal Expansion (ppm/oC (25°C-450°C)) 13.60

Application areas

In environments such as Aerospace, Automotive, high quality motor lamination, transformer powers, shields, strip wound toroids.

Specifications

MIL N-14411C Comp 1 – ASTM A753 Type 4