301S21 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 301S21

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B.S. 301S21

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This page is mainly introduced the 301S21 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 301S21,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Steel strip intended for the manufacture of springs. Specification for martensitic and austenitic stainless steel
  • Steel Garde:301S21
  • Type:Stainless Steels
  • Country:UK
  • Standard:B.S.
  • Standard Number:
    ITEM Standard Number Descriptions
    1 BS 1449-2 Steel plate, sheet and strip. Specification for stainless and heat-resisting steel plate, sheet and strip
    2 BS 5770-4 Steel strip intended for the manufacture of springs. Specification for martensitic and austenitic stainless steel
  • Application:Steel strip intended for the manufacture of springs. Specification for martensitic and austenitic stainless steel

Cross Reference Table(Equivalent Materials):

Material Standard Country
X10CrNi18-8, 1.4310, 301, 301S21, Z12CN17-07 EN European

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C   0.15
Si   1.00
Mn   2.00
P   0.045
S   0.03
Cr 16.00  18.00
Mo  
Ni 6.00  8.00

Mechanical Properties

Tensile strength 656~804 σb/MPa
Yield Strength 499 σ 0.2 ≥/MPa
Elongation 31 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 346~128 -
HRC 30 -

Physical Properties

Thermal expansion 25-72 e-6/K
Thermal conductivity 74-15 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 4236-8190 째C
Density 9548-5265 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)
301S21 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