303 plus X chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 303 plus X

YB 303 plus X

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This page is mainly introduced the 303 plus X chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 303 plus X,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
J 405 Chemical compositions of SAE wrought stainless steels
  • Steel Garde:303 plus X
  • Type:Stainless Steels
  • Country:USA
  • Standard:YB
  • Standard Number:
    ITEM Standard Number Descriptions
    1 J 405 标准内容
  • Metallographic Structure:Austenite
  • Application:J 405 Chemical compositions of SAE wrought stainless steels

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C   0.15
Si   1.00
Mn 2.50  4.50
P   0.2
S 0.15 
Cr 17.0  19.0
Ni 7.00  10.0
Mo   0.60

Mechanical Properties

Tensile strength 376~343 σb/MPa
Yield Strength 761 σ 0.2 ≥/MPa
Elongation 86 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 628~082 -
HRC 30 -

Physical Properties

Thermal expansion 37-07 e-6/K
Thermal conductivity 71-22 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 6162-7024 째C
Density 4527-7693 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)
303 plus X 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

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