S21904 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of S21904

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SAE S21904

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This page is mainly introduced the S21904 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of S21904,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
S21904

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C   0.04
Si   1.00
Mn 8.00  10.0
P   0.06
S   0.03
Cr 19.0  21.5
Ni 5.50  7.50
N 0.15  0.40

Mechanical Properties

Tensile strength 101~952 σb/MPa
Yield Strength 085 σ 0.2 ≥/MPa
Elongation 18 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 824~217 -
HRC 30 -

Physical Properties

Thermal expansion 87-92 e-6/K
Thermal conductivity 83-29 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 2555-2049 째C
Density 6702-8700 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)
S21904 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