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321S51

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316S63 321S51 490
#321S51

Description

UK B.S. BS 1501-3, BS 3059-2, 321S51 Specialsteel Steel boiler and superheater tubes. Specification for carbon, alloy and austenitic stainless steel tubes with specified elevated temperature properties and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 321S51
Category Class Grade Standard Country Application
Steel GradesSpecialsteel 321S51 B.S. UK Steel boiler and superheater tubes. Specification for carbon, alloy and austenitic stainless steel tubes with specified elevated temperature properties

Chemical composition(mass fraction)(wt.%) of the 321S51

C Si Mn P S Cr Mo Ni Ti
0.04 -0.10 ≤1.00 ≤2.00 ≤0.045 ≤0.025 17.00 -19.00 ≤ ≥ 9.00 -12.00 ≤0.80

Mechanical Properties of steel grade 321S51

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
682 (≥) 221 (≥) 32 33 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 413

Physical Properties of steel grade 321S51

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
42 - -     0.14 -  
387 991 - 11.3 221   -  
279 - 42 22.2   114 413

Heat Treatment of steel grade 321S51

Heat treated : 1892°C - 1211°C

Technological Curves of steel grade 321S51

Cross Reference Table (Equivalent Grade) of 321S51

Grade Standard Country Application
321S51(1010)
321S51(1010)
321S51(1105)
321S51(1105)

Relevant standard of 321S51

BS 1501-3 Steels for pressure purposes. Specification for corrosion- and heat-resisting steels: plates, sheet and strip BS-1501-3.pdf
BS 3059-2 Steel boiler and superheater tubes. Specification for carbon, alloy and austenitic stainless steel tubes with specified elevated temperature properties BS-3059-2.pdf
316S63 321S51 490
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Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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