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B.S. T.73 Details

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

Category Type Grade Designations
Grades Stainless Steels T.73 UK - B.S. , BS T 72-T 73 - Specifications for 18/10 chromium-nickel corrosion-resisting steel tube for hydraulic purposes (niobium/titanium stabilized: 550 MPa)

Chemical composition(wt.%) of T.73 grade: 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 - -
Ti 5×C 0.50
Cu - 0.50
Specifications for 18/10 chromium-nickel corrosion-resisting steel tube for hydraulic purposes (niobium/titanium stabilized: 550 MPa)

Mechanical properties of grade T.73 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)
542 (≥) 881 (≥) 13 14 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 333

Physical properties of grade T.73 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
126 (≥) 427 (≥) 41 44 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 222
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
133 932 699

T.73 - Form of Supply

Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED

Cross Reference Table(Equivalent Grade)

Grade Standard Country Application
T.73 B.S. UK
Specifications for 18/10 chromium-nickel corrosion-resisting steel tube for hydraulic purposes (niobium/titanium stabilized: 550 MPa)

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