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B.S. 301S81 Details

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301S81 Application:Specification for stainless steel wire for mechanical springs

Category Type Grade Designations
Grades Stainless Steels 301S81 UK - B.S. , BS 2056 - Specification for stainless steel wire for mechanical springs

Chemical composition(wt.%) of 301S81 grade: BS 2056

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.09
Si - 1.00
Mn - 1.00
P - 0.045
S - 0.030
Cr 16.00 18.00
Mo - -
Ni 6.50 7.75
Al 0.75 1.50
Specification for stainless steel wire for mechanical springs

Mechanical properties of grade 301S81 BS 2056

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
942 (≥) 189 (≥) 23 43 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 243

Physical properties of grade 301S81 BS 2056

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
613 (≥) 954 (≥) 41 34 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 323
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
445 739 691

301S81 - Form of Supply

Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED

Cross Reference Table(Equivalent Grade)

Grade Standard Country Application
301S81 B.S. UK
Specification for stainless steel wire for mechanical springs

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