T.72 Stainless Steels to BS T 72-T 73

T.72 - Specification & Application

  • BS T 72-T 73 - Specifications for 18/10 chromium-nickel corrosion-resisting steel tube for hydraulic purposes (niobium/titanium stabilized: 550 MPa)

Specifications for 18/10 chromium-nickel corrosion-resisting steel tube for hydraulic purposes (niobium/titanium stabilized: 550 MPa)

Chemical composition(wt.%) of T.72 grade: to BS T 72-T 73

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
Cu - 0.50

T.72 - Detail

Specifications for 18/10 chromium-nickel corrosion-resisting steel tube for hydraulic purposes (niobium/titanium stabilized: 550 MPa)

Mechanical properties of grade T.72 BS T 72-T 73

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)
578 (≥) 664 (≥) 23 41 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical properties of grade T.72 BS T 72-T 73

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
534 (≥) 899 (≥) 23 41 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 122
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
227 296 727

Equivalent Grade

Equivalent Products

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