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UNS N09706

Inconel Alloy
706

UNS N09706
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  2. GRADES
  3. Inconel 706
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Introduction
Main Standards
Chemical Composition
Data Sheet
Applications
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Inconel 706 Introduction

logo of precipitation strengthened alloy

Precipitation
Strengthened Alloy

Nickel
Iron
Chromium
Corrosion
Resistance
73
Mechanical
Behavior
89
Purity
94

Overview

As a leading supplier & manufacturer in China, AEETHER supply cost-effective Inconel 706 Products.

INCONEL® nickel-iron-chromium alloy 706 (UNS N09706) is a precipitation-hardenable alloy that provides high mechanical strength in combination with good fabricability. The characteristics of the alloy are similar to those of INCONEL alloy 718 except that alloy 706 is more readily fabricated, particularly by machining.

The substantial nickel and chromium contents provide good resistance to oxidation and corrosion. The primary precipitation-hardening constituents of the alloy are niobium and titanium. The aluminum content also contributes to the hardening response.

The precipitation-hardening system in INCONEL alloy 706 provides the desirable characteristic of delayed hardening response during exposure to precipitation temperatures. That characteristic gives the alloy excellent resistance to postweld strain-age cracking.

INCONEL alloy 706 is used for a variety of applications that require high strength combined with ease of fabrication. In the aerospace field, the alloy is used for turbine discs, shafts, and cases; diffuser cases; compressor discs and shafts; engine mounts; and fasteners. In addition to aerospace applications, the alloy is used for turbine discs in large industrial gas turbines.

Property values in this publication are given in both United States customary units and the International System of Units (SI). The SI unit of stress is the pascal (Pa), which is equivalent to newton per square meter. The approximate relationship between the pascal and the pound per square inch (psi) is 1 Pa = 0.0001450 psi, or 1 psi = 6,895 Pa.

Mechanical Properties

The high-strength of precipitation-hardened INCONEL alloy 706 is maintained at temperatures up to 1300°F (705°C). Optimum mechanical properties for the intended service temperature are achieved by the use of one of two heat treatments.

Corrosion Resistance

The composition of INCONEL alloy 706 enables it to resist corrosion in various environments. The alloy’s chromium content provides resistance to oxidizing media, and its nickel content provides resistance to reducing environments. Other tests have shown the alloy to have poor resistance to boiling 50% sulfuric acid and to boiling 38% and concentrated hydrochloric acid.

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Inconel 706 Standards

SAE AMS 5701
Bars, Forgings and Rings
SAE AMS 5702
Bars, Forgings and Rings
SAE AMS 5703
Bars, Forgings and Rings
SAE AMS 5605
Sheet, Strip and Plate
SAE AMS 5606
Sheet, Strip and Plate

Chemical Composition

Data Sheet

Physical Properties

Density g/cm3 8.08
lb/in.3 0.292
Melting Range °F 2434 - 2499
°C 1334 - 1371
Specific Heat Btu/lb-°F 0.106
J/kg-°C 444
Curie Temperature °F < -109
°C < -78
Permeability at 200 oersted 15.9 kA/m 1.010

Mechanical Properties

Thickness Heat Treatment Tensile
Strength
Yield Strength
(0.2% Offset)
Elongation,
%
in mm ksi MPa ksi MPa
0.04 1.02 Solution Treated 109.8 757 55.5 383 47
0.04 1.02 A 186 1282 148.5 1024 22
0.04 1.02 B 193.5 1334 161.3 1112 24
0.062 1.57 A 189 1303 153.5 1058 18
0.062 1.57 B 191 1317 159 1096 20
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Inconel 706 Applications