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BT20①

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BT20① BT21
# #BT20 #①

Description

UK SS BT20① Carbide for cutting tools and BT20① Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: BT20①
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy BT20① SS UK Carbide for cutting tools
BT2①
BT4
BT4
BT6
BT6
BT15
BT15
BT20①
BT20①
BT20①

Chemical composition(mass fraction)(wt.%) of the BT20①

C(％) Si(％) Mn(％) Cr(％) Mo(％) V(%) W(%) Co(%)
0.75-0.85 ≤0.40 ≤0.40 4.25-5.00 ≤1.00 1.40-1.60 21.0-22.5 ≤0.60

Mechanical Properties of steel grade BT20①

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)
658 (≥) 649 (≥) 43 23 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical Properties of steel grade BT20①

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
11 - -     0.31 -  
666 774 - 22.3 211   -  
698 - 11 33.2   431 313

Heat Treatment of steel grade BT20①

Heat treated : 1659°C - 1144°C

Technological Curves of steel grade BT20①

Cross Reference Table (Equivalent Grade) of BT20①

Grade Standard Country Application
Q195 GBT China Engineering and welding
Q215 China Engineering and welding
Q215 B China Engineering and welding
Q235 China Engineering and welding
Q235 B China Engineering and welding
Q235 C China Engineering and welding
Q235 D China Engineering and welding
Q255 A China Engineering and welding
Q255 B China Engineering and welding
Q275 China Engineering and welding
Q235q C China Bridge structure with steel
Q235q D China Bridge structure with steel
Q345q E China Bridge structure with steel
Q345q C China Bridge structure with steel
ASTM 1030 ASTM USA General use carbon steel bar
UNS G10300 UNS USA General use carbon steel bar
ASTM 1005 ASTM USA General use carbon steel bar
UNS G10050 UNS USA General use carbon steel bar
ASTM 1006 ASTM USA General use carbon steel bar
UNS G10060 UNS USA General use carbon steel bar
BT20① BT21
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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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