434S20 Stainless Steels to BS 1554

434S20 - 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 434S20 grade: to BS 1554

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.12
Si - 1.00
Mn - 1.00
P - 0.04
S - 0.03
Cr 16.00 18.00
Mo 0.75 1.25
Ni - -

434S20 - Detail

Specification for stainless and heat-resisting steel round wire

Mechanical properties of grade 434S20 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)
271 (≥) 616 (≥) 33 43 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical properties of grade 434S20 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
979 (≥) 226 (≥) 31 13 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 242
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
724 913 944

Equivalent Grade

Equivalent Products

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