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

China GB B28 凿岩用锥形连接中空六角形钎杆 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: B28 / B28
Category Grade Standard Region/Area Standard Content
Metals B28 GB/T 6481 China 凿岩用锥形连接中空六角形钎杆

Chemical composition(mass fraction)(wt.%) of the B28

Element Min Max Similar

Mechanical Properties of steel grade B28

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)
727 (≥) 296 (≥) 14 21 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 224

Physical Properties of steel grade B28

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
33 - -     0.22 -  
683 453 - 42.3 124   -  
942 - 24 11.2   222 131

Heat Treatment of steel grade B28

Heat treated : 1321°C - 1698°C

Technological Curves of steel grade B28

Cross Reference Table (Equivalent Grade) of B28

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 B28?
  • List your company on S&G now? Join
  • Non-paying users only
Sidebar RFQs Menu My Account
Top