309S20 Stainless Steels to BS 1554

309S20 - Specification & Application

  • BS 1554 - Specification for stainless and heat-resisting steel round wire

Specification for stainless and heat-resisting steel round wire

Chemical composition(wt.%) of 309S20 grade: to BS 1554

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.12
Si - 1.00
Mn - 2.00
P - 0.045
S - 0.03
Cr 22.00 25.00
Mo - -
Ni 12.50 15.00

309S20 - Detail

Specification for stainless and heat-resisting steel round wire

Mechanical properties of grade 309S20 BS 1554

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)
229 (≥) 735 (≥) 44 22 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 413

Physical properties of grade 309S20 BS 1554

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
634 (≥) 276 (≥) 32 32 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 322
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
574 828 888

Equivalent Grade

Equivalent Products

We can customize the production of 309S20 grade, contact us for the best solution.
sales@specificsteel.com