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441

  Grade 441 (UNS S44100, EN 1.4509) is dual-stabilized Ferritic stainlss steel with 18% chromium, low-carbon. This grade exhibits good high temperature strength, exceeding that of Grade 409L and 439 plus good corrosion resistance in many exhaust gas environments and good oxidation resistance at elevated temperatures.

Ferritic steels are not inherently strong at elevated temperatures, but columbium additions coupled with appropriate solution annealing markedly improve long-time creep rupture strength, and this makes it suitable for using in application in tube and automotive industries.

Grade 441 is dual stabilized with niobium and titanium to provide good weld ductility and resistance to intergranular corrosion in the weld heat affected zone, which can be formed using a wide range of roll forming, mild stretch-bending or common drawing operations.

PROPERTIES

  Grade 441 may be considered for a wide variety of applications where one or more of the following properties are important:

  • Corrosion Resistance in many exhaust gas environments
  • Cyclic oxidation resistance
  • Creep resistance
  • Excellent formability and good weldability
  • Good ductility
  • Good for deep drawing
  • Good high-temperature strength
  • Good for polish
  • Ease of Fabrication

CHEMICAL COMPOSITION AND PHYSICAL PROPERTIES FOR 441
Item C% Si% Mn% P% S% Ni% Cr% N% Ti% Nb% Others
Min --- --- --- --- --- --- 17.50   0.10 0.3+3 ---
Max 0.03 1.00 1.00 0.04 0.015 --- 18.50   0.60 1.00 ---
Item Tensile Test Hardness Test
0.2%Y.S. 1%Y.S. T.S. EL (%) HRB HV
Min 250 --- 430 18 --- ---
Max N/mm2 --- 630 --- --- ---

APPLICATION

Grade 441 was applied in a wide variety of applications as below:

  • Automotive exhaust manifold and other exhaust-system components
  • Catalytic converter shells
  • Clamps
  • Kitchen catering appliance, such as work surfaces, shelving, extractor hoods and hobs, sinks,
  • Wall panels and claddings
  • Elevator panels, doors and frames
  • Tubes
  • Heat exchangers
  • Exhaust system parts

SPECIFICATIONS
  • ASTM A240M – Chromium and Chromium – Nickel Stainless Steel Plate, Sheet and Strip for Pressure Vessels and for General Applications.
  • ASTM 480M – General Requirements for Flat Rolled Stainless and Heat-Resisting Steel Plate, Sheet and Strip
  • EN 10088-2 (1.4509) – Stainless Steel Technical delivery conditions for sheet, plate and strip of corrosion resisting steels for general purposes

PRODUCT TYPES
  • Coil
  • Sheet
  • Strip

RAW MATERIAL FINISHS
2D

A dull finish which results from cold rolling followed by annealing and descaling, and may perhaps gets a final light roll pass through unpolished rolls. A 2D finish is used where appearance is not a concern.

Range 914 (3') 1000 1219 (4') 1250 1500 1524 (5')
0.3mm ~ 3.0mm
30GA ~ 11GA
0.012" ~ 0.1196"
2B
(Mill Finish)

A bright, cold-rolled finish resulting in the same manner as 2D finish, except that the annealed and descaled sheet received a final light roll pass through polished rolls. This is the general-purpose cold-rolled finish that can be used as is, or a preliminary step to polishing.

Range 914 (3') 1000 1219 (4') 1250 1500 1524 (5')
0.3mm ~ 3.0mm
30GA ~ 11GA
0.012" ~ 0.1196"

PRODUCTS

No.4

ARCHITECTURE

Grinding finish, also called brushed, directional or satin finish. It was characterized by short,...

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Hairline

DECORATION

Higher grit numbers produce finer polishing lines. The general purpose of this finish is widely used for...

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MIRROR

KITCHEN WARE

Mirror (No.8, Non-Directional) is a high gloss, polished finish, having a high degree of reflectiveness...

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PVD - GOLD COATING

BATHROOM WARE

PVD is the abbreviation of Physical Vapor Deposition. It’s a process to produce a metal vapour...

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PVD - Black Coating

BATHROOM WARE

PVD is the abbreviation of Physical Vapor Deposition. It’s a process to produce a metal vapour...

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PVD - Brass Coating

BATHROOM WARE

PVD is the abbreviation of Physical Vapor Deposition. It’s a process to produce a metal vapour...

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PVD - Rose Coating

BATHROOM WARE

PVD is the abbreviation of Physical Vapor Deposition. It’s a process to produce a metal vapour...

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PVD - Zircon Coating

BATHROOM WARE

PVD is the abbreviation of Physical Vapor Deposition. It’s a process to produce a metal vapour...

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Vibration

BATHROOM WARE

Vibration is a multi-directional finish, which was also known by the names Non-directional Satin and Angel Hair.

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CD Overlay

BATHROOM WARE

CD Overlay, which was also known by the names Circle CD, is a patterned polished steel finish that is applied mechanically to ...

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slideshow

SERVICE CENTER

  • +886-4-2659-5179
  • +886-4-2659-5096
  • info@stanch.com.tw
  • No.51, Ching 1st Road, Chungkang Export Processing Zone, Wuchi District, Taichung City 43541, Taiwan, R.O.C.