2S.129 Stainless Steels to BS 2S 129

2S.129 - Specification & Application

  • BS 2S 129 - Specification for 18/9 chromium-nickel corrosion-resisting steel (titanium stabilized) billets, bars, forgings and parts (540 MPa: limiting ruling section 150 mm)

Specification for 18/9 chromium-nickel corrosion-resisting steel (titanium stabilized) billets, bars, forgings and parts (540 MPa: limiting ruling section 150 mm)

Chemical composition(wt.%) of 2S.129 grade: to BS 2S 129

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.08
Si 0.20 1.00
Mn 0.50 2.00
P - 0.035
S - 0.025
Cr 17.00 19.00
Ni 8.00 11.00
Mo - 1.00
Ti 5×C 0.80

2S.129 - Detail

Specification for 18/9 chromium-nickel corrosion-resisting steel (titanium stabilized) billets, bars, forgings and parts (540 MPa: limiting ruling section 150 mm)

Mechanical properties of grade 2S.129 BS 2S 129

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)
435 (≥) 873 (≥) 31 11 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 244

Physical properties of grade 2S.129 BS 2S 129

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
142 (≥) 925 (≥) 34 22 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 412
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
749 942 463

Equivalent Grade

Equivalent Products

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