Grade: QN1803, ASTM A240
Surface Finish: 2B, 2D, BA, NO.4, 8K mirror, checkered, embossed, hair line, sand blast, Brush, etching, etc
Technique: Cold Rolled .
Thickness: 0.15mm-3.00mm (Cold Rolled sheets) .
Width: 1000mm, 1219mm, 1250mm, 1500mm, 1800mm, 2000mm .
Length: 2000mm, 2440mm, 2500mm, 3000mm, 6000mm or as customers’ requirement .
Package: Anti-water paper wrapped,Wooden pallets,Wooden boxes etc.required.
Product Type: Sheet
Origin: China
Port: ShangHai,NingBo,FoShan
Standard: JIS, AISI, ASTM, GB,DIN, EN,SUS,etc
Payment Term: T/T , L/C
Mill: POSCO,TISCO,Baosteel,ZPSS,JISCO,Hong Wang,etc
Lead Time: 7 to 25 working days after the receipt of 30% deposit .
Form: Perforated Sheet, Chequered Plate, Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Strip, Flats etc.
Value Added Service: Polish, Rolling, Cutting, Bending, Forging, Cladding, Heat Treatment, Annealed, Pickling,
Minor Fabrication Etc.
Characteristics of steel grade QN1803 / SS QN1803:
ASTM A182 - Standard Specification for Forged or Rolled Pipe Flanges, Forged Fittings, Alloy and Stainless Steel
Valves and Parts for High Temperature Service.
ASTM A213 - Standard Specification for Seamless Ferritic and Austenitic Steel Boiler, Superheater, and Heat
Exchanger Tubes.
ASTM A240 - Standard Specification for Chromium and Nickel-Chromium, Chromium and Manganese-Nickel
Stainless Steels for Plates, Sheets, Strips for Pressure Vessels and General Applications .
ASTM A312 - Standard Specification for Seamless, welded and intensively cold-worked austenitic stainless steel pipes.
Chemical composition in % steel AISI QN1803:
C
|
Mn
|
P
|
S
|
Si
|
Cr
|
Ni
|
Cu
|
N
|
Fe
|
<0.1
|
4.0-7.0
|
<0.05
|
<0.005
|
<1.0
|
17.5-19.5
|
2.0-3.5
|
1.0-3.5
|
0.2-0.3
|
Remaining
|
Mechanical properties of material QN1803 :
Tensile strength (tensile strength), min., MPa
|
747
|
Yield strength, 0.2%, MPa
|
420
|
Brinell hardness, HB
|
215
|
Elongation, min., %
|
51
|
Scope of application QN1803:
Standard and application of high strength nitrogen-containing austenitic stainless steel QN1803
The new product grade QN1803 is the world's first nitrogen-containing, high-corrosion-resistant, nickel-saving
austenitic stainless steel product. On the basis of ensuring the corrosion resistance comparable to AISI 304
stainless steel, the strength of the material is increased, and the material cost is reduced, so that it has higher cost
performance and stronger market competitiveness than AISI 304 stainless steel.
The QN1803 has the following features:
1) The pitting equivalent (PREN=Cr+3.3Mo+30N-Mn) is above 19.0 and has at least the same pitting resistance as
Inox 304 stainless steel. In the environment of dilute hydrochloric acid, dilute sulfuric acid, acetic acid + salt and other
environments, the resistance to uniform corrosion is much better than that of 304 stainless steel.
2) Corrosion resistance is better than 304 stainless steel in actual use after bending, stamping, hard state and other
cold forming.
3) The yield strength is 1.3 times or more of Inox 304 stainless steel, and has an elongation of not less than 45%.
Wear resistance and fatigue performance are better than 304 stainless steel.
4) Good welding performance, the strength after welding is higher than that of 304 stainless steel, and the corrosion
resistance is equivalent to that of 304 stainless steel. Table 1 compares the corrosion resistance of various stainless steels.
Our experienced machinists, welders and technicians, modern facilities and fabrication technology enable us to provide
you with the following custom fabrication services and beyond.
Machining services:
Equipped with CNC lathes and mills, our production team can provide you with a single, customized piece, or a full production
run. We will gladly and accurately machine all types of materials to your specification.
Cutting /Sawing Services:
Whatever shape, size or density of your material, we will custom-cut to any length you require.
Custom Bending:
We provide custom bending services for Industrial and Sanitary Applications. E-mail with degree of bend and centerline radius.
Welding:
We offer precision welding of various materials with guaranteed strength and durability.
Threading:
Whether it’s a whole or piece of pipe, a fitting or an end, we can custom thread to your specifications.
Custom Fabrications:
We pride ourselves in meeting your custom fabrication needs. Please let us know what we can do for you.
ASTM / ASME A240 Grade QN1803 sheet types
QN1803 Stainless Steel Sheet
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2B Finish QN1803 Stainless Steel Sheet
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QN1803 Stainless
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Material QN1803 Sheet
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astm QN1803 stainless steel
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ss QN1803 sheet
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inox QN1803
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grade QN1803 stainless
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stainless steel suppliers
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