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

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UNS 303 Cu

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This page is mainly introduced the 303 Cu chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 303 Cu,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Chemical compositions of SAE wrought stainless steels
  • Steel Garde:303 Cu
  • Type:Stainless Steels
  • Country:USA
  • Standard:UNS
  • Standard Number:
    ITEM Standard Number Descriptions
    1 SAE J 405 (1998) Chemical compositions of SAE wrought stainless steels
  • Metallographic Structure:Austenite
  • Application:Chemical compositions of SAE wrought stainless steels

Cross Reference Table(Equivalent Materials):

Material Standard Country
SUS 303Cu FED Japan
SUS303Cu AMS USA
S30330 AISI USA
SUS 303 Cu JIS Japan
SUS 303 Cu JIS Japan
SUS 303 Cu JIS Japan
SUS 303 Cu JIS Japan

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C   0.15
Si   1.00
Mn   2.00
P   0.15
S 0.10 
Cr 17.0  19.0
Ni 6.00  10.0
Cu 2.50  4.00
Se 0.10 

Mechanical Properties

Tensile strength 703~566 σb/MPa
Yield Strength 488 σ 0.2 ≥/MPa
Elongation 54 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 640~559 -
HRC 30 -

Physical Properties

Thermal expansion 04-81 e-6/K
Thermal conductivity 59-28 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 6499-7859 째C
Density 4962-1203 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 Cu 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