Available 24/7 at contact@steel-grades.com

England B.S. 221 Specification for steels for fired and unfired pressure vessels: sections and bars and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 221 / 221
Category Grade Standard Region/Area Standard Content
Metals 221 BS 1502 England Specification for steels for fired and unfired pressure vessels: sections and bars

Chemical composition(mass fraction)(wt.%) of the 221

Element Min Max Similar

Mechanical Properties of steel grade 221

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)
374 (≥) 553 (≥) 33 22 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 434

Physical Properties of steel grade 221

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
21 - -     0.32 -  
462 486 - 11.3 111   -  
391 - 32 13.2   441 414

Heat Treatment of steel grade 221

Heat treated : 1553°C - 1939°C

Technological Curves of steel grade 221

Cross Reference Table (Equivalent Grade) of 221

Available Suppliers

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...

Rfq.: sales@longhaisteel.com
  • Do you supply this 221?
  • List your company on S&G now? Join
  • Non-paying users only
Sidebar RFQs Menu My Account
Top