202 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 202

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YB 202

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This page is mainly introduced the 202 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 202,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
AISI 202
  • Steel Garde:202
  • Type:Stainless Steels
  • Country:USA
  • Standard:YB
  • Standard Number:
    ITEM Standard Number Descriptions
    1 A 213/A 213M (2011) Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
    2 A 240/A 240M (2012) Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
    3 A 249/A 249M (2010) Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
    4 A 276 (2010) Stainless Steel Bars and Shapes
    5 A 314 (2008) Stainless Steel Billets and Bars for Forging
    6 A 473 (2009) Stainless Steel Forgings
    7 A 959 (2011) Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
    8 SAE AMS-QQ-S-763B (1998) Steel, Corrosion Resistant, Bars, Wire, Shapes, and Forgings
    9 SAE J 405 (1998) Chemical compositions of SAE wrought stainless steels
  • Metallographic Structure:Austenite
  • Application:Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C   0.15
Si   1.00
Mn 7.50  10.0
P   0.06
S   0.03
Cr 17.0  19.0
Ni 4.00  6.00
N   0.25

Mechanical Properties

Tensile strength 416~021 σb/MPa
Yield Strength 635 σ 0.2 ≥/MPa
Elongation 91 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 904~239 -
HRC 30 -

Physical Properties

Thermal expansion 83-99 e-6/K
Thermal conductivity 39-35 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 4155-8114 째C
Density 6628-8629 kg/m3
Resistivity 0.50-0.60 Ohm.mm2/m
     

Heat Treatment Regime

Annealing

Quenching

Tempering

Normalizing

Q & T

Size Availability

Steel Grade Specification Processing range(mm)
202 Stainless Steels Round Bar and Hollow Bar Φ1 to Φ2000
Square and Flat Steel Φ10 to Φ100
Plate and Sheet 0.08-800(Thickness)*10-1500(Width)*Length
Tube or Pipe OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
Coil and Strip Steel THK:0.1mm Width:1500mm
Forged Ring/Cylindrical/Disk

Technical specification/standard for download