Imported Austenitic Stainless Steel

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S33400/Incoloy840

 

          

Introduction

Stainless steel grade 334 is a titanium and aluminum based austenitic stainless steel. This alloy provides better temperature scaling resistance than chromium-nickel stainless steels such as grade 304. It also has good oxidation resistance of up to 1038°C (1900°F). Grade 334 is commonly used as a sheathing material.

The following sections will discuss in detail about stainless steel grade 334.

Chemical Composition

The chemical composition of stainless steel grade 334 is outlined in the following table.

Element Content (%)
Nickel, Ni 19-20
Chromium, Cr 19-19.5
Manganese, Mn 1
Silicon, Si 0.75
Phosphorus, P 0.02
Sulfur, S 0.015
Titanium, Ti 0.4
Aluminum, Al 0.4
Copper, Cu 0.2
Carbon, C 0.03
Iron, Fe Balance

Physical Properties

The physical properties of stainless steel grade 334 are tabulated below.

Properties Metric Imperial
Density 8.03 g/cm3 0.290 lb/in3

Mechanical Properties

The following table shows mechanical properties of stainless steel grade 334.

Properties Metric Imperial
Tensile strength 572.4 MPa 83020 psi
Yield strength 241.4 MPa 35010 psi
Modulus of elasticity 200 GPa 29000 ksi
Elongation at break 40% 40%
Hardness, Rockwell B 82 82

Thermal Properties

The thermal properties of stainless steel grade 334 are tabulated below.

Properties Metric Imperial
Thermal expansion co-efficient (@20-100°C/68-212°F) 17.04 µm/m°C 9.467 µin/in°F
Thermal conductivity 12.9 W/mK 89.5 BTU in/hr.ft².°F

Applications 

Stainless steel grade 334 can be applied in these areas:

  • Automotive exhaust systems
  • Sheathing material for heating elements
  • Emission control systems
  • In applications where resistance to high temperature degradation is essential

Stock

Form

Specification

Supply Form

Others

Sheet

Thickness?0.40-4.75mm?General Width?1000?1219?1500mm

Whole Coil or piece of it

Cold Annealed?Surface 2B?2E

Plate

Thickness?4.76-60mm?Width?1500?2000?2500mm?Length?3000?6000?8000?8500mm?Under 10mm plate can be coiled?

Whole Coil or piece of it

Single hot rolling?Solid solution annealed state?Surface 1D

Belt

Thickness?0.10-3.0mm?Width?50-500mm

Whole Coil or Specified size

Cold Annealed?Surface 2B?2E

Bar & Rod

Rolled barΦ5-45mm?Length≤1500mm

Polished Bar?circle?Square?

Solution annealing,descaling

Forged barΦ26-245mm?Length≤4000mm

Weld tube

Outer diameterΦ4.76-135mm?Wall Thickness0.25-4.00mm?Length?≤35000 mm

Base on your requirement

Use for PHE

Seamless Tube

Outer diameterΦ3-114mm?Wall Thickness0.2-4.5mm

Base on your requirement

Use for PHE

Wire

Outer diameterΦ0.1-13mm

Base on your requirement

Ni & Ni alloy, Ti & Ti alloy

Forged piece

roundness and square alloy

Base on your requirement

Steel, Alloy

Flangs

All kinds of Flangs

Base on your requirement

Steel, Alloy

Welding Material

Coil wire Φ0.90mm/1.2mm/1.6mm

Base on your requirement

Certificate of Origin?America, Sweden, Britain, Germany, Austria, Italy, France.

Straight WireΦ1.2mm/1.6mm/2.4mm/3.2mm/4.0mm

Welding rodΦ2.4mm/3.2mm/4.0mm

Tube

Elbow, three links, four links, different diameter size

Base on your requirement

Ni & Ni alloy, Ti & Ti alloy

Explosive bonded laminate

Raw Sheet Thickness≥2mm

Base on your requirement

Ni & Ni alloy, Ti & Ti alloy

 

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