Alloy of iron with nickel 44NHTY

Chemical composition

Al	Aluminum	0.4 — 0.8
Fe	Iron	Rest
Si	Silicon	0.3 — 0.6
Mn	Manganese	0.3 — 0.6
Ni	Nickel	43.5 — 45.5
S	Sulfur	<0.02
Ti	Titanium	2.2 — 2.7
C	Carbon	<0.05
P	Phosphorus	<0.02
Cr	Chromium	5.0 — 5.6

Domestic analogue — Н43ХТ

Designed for the manufacture of elastic sensitive elements operating at temperatures up to 200 degrees. C. Technical requirements — according to GOST 10994−74 and GOST 14117−85

Classification

Country	Section	Category
CIS, Russia, Ukraine	Precision alloys	With preset elastic properties

Chemical composition

Standard	Fe, %	Si, %	Mn, %	Cr, %	Ti, %	Ni, %	Al, %	P, %	C, %	S, %
GOST 10994-74	44.11–48.3	0.3–0.6	0.3–0.6	5–5.6	2.2–2.7	43.5–45.5	0.4–0.8	< 0.02	< 0.05	< 0.02

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Physical characteristics

Temperature, °C	$$E\cdot 10^{9}$$, $$MPa$$	$$\alpha\cdot 10^{6}$$, $$K^{-1}$$
20	179	8

Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$$\sigma _{U}$$, $$MPa$$	$$\sigma_{P}$$, $$MPa$$	$$\epsilon_L$$, %	$$\psi$$, %	$$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$	Treatment
Round					980	635	15	25	690	Quenching and aging
Wire				cold-work	1080
Wire				cold-work, half-load	980
Tape				cold-work	800

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
			300–320

Standards

Standard	Description
GOST 10994-74

Description of chemical elements

Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
Mn	%	Manganese
Cr	%	Chrome
Ti	%	Titan
Ni	%	Nickel
Al	%	Aluminium
P	%	Phosphorus
C	%	Carbon
S	%	Sulfur

Description of physical characteristics

Parameter	Units of measurement	Description
$$E\cdot 10^{9}$$	$$MPa$$	Elastic modulus
$$\alpha\cdot 10^{6}$$	$$K^{-1}$$	Coefficient of thermal (linear) expansion (range 20°C–T)

Description of mechanical properties

Parameter	Units of measurement	Description
$$\sigma _{U}$$	$$MPa$$	Ultimate tensile strength
$$\sigma_{P}$$	$$MPa$$	Proportionality limit
$$\epsilon_L$$	%	Elongation at break (longitudinal)
$$\psi$$	%	Reduction in cross section on fracture
$$KCU\cdot 10^{3}$$	$$\frac{J}{m^2}$$	Impact toughness