321S51 520 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 321S51 520

B.S. 321S51 520

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This page is mainly introduced the 321S51 520 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 321S51 520,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Specification for carbon, low alloy and stainless steel bars and billets for bolting material to be used in pressure retaining applications
  • Steel Garde:321S51 520
  • Type:Stainless Steels
  • Country:UK
  • Standard:B.S.
  • Standard Number:
    ITEM Standard Number Descriptions
    1 BS 1506 Specification for carbon, low alloy and stainless steel bars and billets for bolting material to be used in pressure retaining applications
  • Application:Specification for carbon, low alloy and stainless steel bars and billets for bolting material to be used in pressure retaining applications

Cross Reference Table(Equivalent Materials):

Material Standard Country
321S51(1010) B.S. UK
321S51(1105) B.S. UK
321S51 B.S. UK
321S51 490 B.S. UK
321S51 510 B.S. UK

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.04  0.10
Si   1.00
Mn   2.00
P   0.045
S   0.025
Cr 17.00  19.00
Mo  
Ni 9.00  12.00
Ti   0.80

Mechanical Properties

Tensile strength 853~867 σb/MPa
Yield Strength 891 σ 0.2 ≥/MPa
Elongation 93 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 935~385 -
HRC 30 -

Physical Properties

Thermal expansion 96-00 e-6/K
Thermal conductivity 49-91 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 3679-4245 째C
Density 2278-9830 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)
321S51 520 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