2T.66 Stainless Steels to BS 2T 66

2T.66 - Specification & Application

  • BS 2T 66 - Specification for 18/10 chromium-nickel corrosion-resisting steel tube (niobium stabilized: 550 MPa) (weldable)

Specification for 18/10 chromium-nickel corrosion-resisting steel tube (niobium stabilized: 550 MPa) (weldable)

Chemical composition(wt.%) of 2T.66 grade: to BS 2T 66

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 9.00 12.00
Mo - -
Nb 10×C 1.00

2T.66 - Detail

Specification for 18/10 chromium-nickel corrosion-resisting steel tube (niobium stabilized: 550 MPa) (weldable)

Mechanical properties of grade 2T.66 BS 2T 66

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)
469 (≥) 539 (≥) 22 21 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 411

Physical properties of grade 2T.66 BS 2T 66

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
495 (≥) 159 (≥) 12 14 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 233
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
521 215 891

Equivalent Grade

Equivalent Products

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