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Boron 921

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Global 企业标准 Boron921 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Boron921 / Boron 921
Category Grade Standard Region/Area Standard Content
Metals Boron 921 -- Global

Chemical composition(mass fraction)(wt.%) of the Boron 921

Element Min Max Similar

Mechanical Properties of steel grade Boron 921

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)
257 (≥) 428 (≥) 11 13 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 433

Physical Properties of steel grade Boron 921

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 - -     0.34 -  
123 691 - 43.3 423   -  
351 - 34 22.2   324 334

Heat Treatment of steel grade Boron 921

Heat treated : 1264°C - 1974°C

Technological Curves of steel grade Boron 921

Cross Reference Table (Equivalent Grade) of Boron 921

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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