347/1.4550/X5CrNiCuNb17-4-4/S34700 | Austenite Stainless Steel

347

1.4550, S34700, SUS 347

SpecificationAMS 5646

This is an Austenite stainless steel that contains niobium and thallium. It has superior intergranular corrosion resistance and oxidation resistance.

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Introduction
Specifications
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Introduction

Product properties

˙Outstanding intergranular corrosion resistance

˙Oxidation resistance

˙Higher creep and stress rupture resistance than that of 304/304L stainless steel

˙Good low temperature toughness

˙Non magnetic in the annealing state

Industrial Applications

˙Aerospace high temperature parts

˙Combustor cover

Specifications

Chemical composition (wt. %)

Element

Min.

9.00

17.00

Max.

0.08

1.00

2.00

0.040

0.030

12.00

19.00

0.75

1.00

Physical Property

Density (g/cm^3)

7.9

Modulus of elasticity

Temperature (℃)

Gpa

500

165

200

Thermal Expansion Coefficient

Temperature (℃)

10^-6/℃

300

Thermal Conductivity

Temperature (℃)

W/m·K

Mechanical Property

Items

Solution

Hardness

Reported

Tensile Strength Rm (KSI)

75 min.

Yield Strength 0.2%Rp (KSI)

30 min.

Percentage of Elongation A(%)

40 min.

Section Shrinkage Z(%)

50 min.

Size Ranges

Products

Diameter (mm)

Length (mm)

Rolled bar

10~95

3,000~5,700

Forged bar

95.2~230

3,000~5,700

Billet

130x130, 140x140, 150x150, 160x160

7,000 max.

Flat bar

80x80 (min.)

Based on the customer needs

Heat Treatment Conditions

Solution Treatment: 1040℃, water cooling

Related Application

Click any of application links below to view their detailed introduction

Aerospace Industry

Energy Industry

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Austenite Stainless Steel 347/1.4550/X5CrNiCuNb17-4-4/S34700 – GMTC

347

Product properties

Industrial Applications

Aerospace Industry

Energy Industry

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