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B.S. 304 S51 Details

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304 S51 Application:Austenitic stainless steel pipes and tubes for pressure purposes. Specification for seamless tubes

Category Type Grade Designations
Grades Stainless Steels 304 S51 UK - B.S. , BS 1501-3 - Steels for pressure purposes. Specification for corrosion- and heat-resisting steels: plates, sheet and strip
BS 1502 - Specification for steels for fired and unfired pressure vessels: sections and bars
BS 1503 - Specification for steel forgings for pressure purposes
BS 1506 - Specification for carbon, low alloy and stainless steel bars and billets for bolting material to be used in pressure retaining applications
BS 3059-2 - Steel boiler and superheater tubes. Specification for carbon, alloy and austenitic stainless steel tubes with specified elevated temperature properties
BS 3605-1 - Austenitic stainless steel pipes and tubes for pressure purposes. Specification for seamless tubes

Chemical composition(wt.%) of 304 S51 grade: BS 1501-3

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.04 0.10
Si - 1.00
Mn - 2.00
P - 0.045
S - 0.025
Cr 17.00 19.00
Mo - -
Ni 8.00 11.00
Austenitic stainless steel pipes and tubes for pressure purposes. Specification for seamless tubes

Mechanical properties of grade 304 S51 BS 1501-3

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)
249 (≥) 637 (≥) 43 42 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 323

Physical properties of grade 304 S51 BS 1501-3

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
326 (≥) 314 (≥) 43 11 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 212
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
189 299 157

304 S51 - 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
304S51 B.S. UK
Austenitic stainless steel pipes and tubes for pressure purposes. Specification for seamless tubes
HFS 304S51 B.S. UK
Austenitic stainless steel pipes and tubes for pressure purposes. Specification for seamless tubes
CFS 304S51 B.S. UK
Austenitic stainless steel pipes and tubes for pressure purposes. Specification for seamless tubes
HFM 304S51 B.S. UK
Austenitic stainless steel pipes and tubes for pressure purposes. Specification for seamless tubes
304 S51 B.S. UK
Austenitic stainless steel pipes and tubes for pressure purposes. Specification for seamless tubes
HFS304 S51 B.S. UK
Austenitic stainless steel pipes and tubes for pressure purposes. Specification for seamless tubes
CFS304 S51 B.S. UK
Austenitic stainless steel pipes and tubes for pressure purposes. Specification for seamless tubes
HFM304 S51 B.S. UK
Austenitic stainless steel pipes and tubes for pressure purposes. Specification for seamless tubes
304S 51 B.S. UK
Austenitic stainless steel pipes and tubes for pressure purposes. Specification for seamless tubes

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