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321S51 510

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321S51 490 321S51 520
#321S51

Description

UK B.S. BS 1502, BS 1503, 321S51 510 Specialsteel Specification for steel forgings for pressure purposes and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 321S51 510
Category Class Grade Standard Country Application
Steel GradesSpecialsteel 321S51 510 B.S. UK Specification for steel forgings for pressure purposes

Chemical composition(mass fraction)(wt.%) of the 321S51 510

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 510

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)
795 (≥) 688 (≥) 44 21 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 431

Physical Properties of steel grade 321S51 510

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
13 - -     0.42 -  
496 815 - 34.3 331   -  
786 - 22 21.2   212 321

Heat Treatment of steel grade 321S51 510

Heat treated : 1423°C - 1494°C

Technological Curves of steel grade 321S51 510

Cross Reference Table (Equivalent Grade) of 321S51 510

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

Relevant standard of 321S51 510

BS 1502 Specification for steels for fired and unfired pressure vessels: sections and bars BS-1502.pdf
BS 1503 Specification for steel forgings for pressure purposes BS-1503.pdf
321S51 490 321S51 520
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