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BH21A

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BH21A BH26
#BH21A

Description

UK BH21A Carbide for cutting tools and BH21A Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: BH21A
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy BH21A UK Carbide for cutting tools
BH11
BH12
BH12
BH13
BH13
BH19
BH19
BH21
BH21
BH21A

Chemical composition(mass fraction)(wt.%) of the BH21A

C(％) Si(％) Mn(％) Cr(％) Ni(％) Mo(％) V(%) W(%) Other(%)
0.20-0.30 ≤0.40 ≤0.40 2.25-3.25 2.00-2.50 ≤0.60 ≤0.50 8.50-10.0 Cu≤0.20,Sn≤0.05

Mechanical Properties of steel grade BH21A

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)
765 (≥) 219 (≥) 31 11 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 433

Physical Properties of steel grade BH21A

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
12 - -     0.33 -  
779 445 - 43.3 142   -  
159 - 23 24.2   424 341

Heat Treatment of steel grade BH21A

Heat treated : 1146°C - 1596°C

Technological Curves of steel grade BH21A

Cross Reference Table (Equivalent Grade) of BH21A

Grade Standard Country Application
BH21A UK Carbide for cutting tools
BH21A UK Carbide for cutting tools
BH21A BH26
Available Suppliers
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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