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BH 21

Favorite Datasheet

England B.S. BH21 Specification for tool and die steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: BH21 / BH 21
Category Grade Standard Region/Area Standard Content
Metals BH 21 BS 4659 England Specification for tool and die steels

Chemical composition(mass fraction)(wt.%) of the BH 21

Element Min Max Similar
W 8.5000 10.0000 -
V - 0.4000 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Ni - 0.4000 -
Mo - 0.6000 -
Mn - 0.4000 -
Cu - 0.2000 -
Cr 2.2500 3.2500 -
C 0.2500 0.3500 -

Mechanical Properties of steel grade BH 21

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)
352 (≥) 576 (≥) 24 13 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical Properties of steel grade BH 21

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
22 - -     0.22 -  
459 898 - 34.3 241   -  
197 - 23 42.2   411 421

Heat Treatment of steel grade BH 21

Heat treated : 1422°C - 1518°C

Technological Curves of steel grade BH 21

Cross Reference Table (Equivalent Grade) of BH 21

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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Jiangyou Longhai Special Steel Co.,Ltd.

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