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BS 2B 21

Favorite Datasheet

England B.S. BS2B21 Specification for aircraft material. White metal (88/8/4) ingots (suitable for bearings) and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: BS2B21 / BS 2B 21
Category Grade Standard Region/Area Standard Content
Metals BS 2B 21 BS 2B 21 England Specification for aircraft material. White metal (88/8/4) ingots (suitable for bearings)

Chemical composition(mass fraction)(wt.%) of the BS 2B 21

Element Min Max Similar
Mn - 0.0500 -
Si - 0.3000 -
Cu 4.6000 6.0000 -
Al - - -
Mg - 0.0500 -
Sn 0.3000 0.7000 -
Fe - 0.5000 -
Bi 0.3000 0.6000 -
Others each - 0.0500 -
Total Others - 0.1500 -

Mechanical Properties of steel grade BS 2B 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)
542 (≥) 169 (≥) 23 11 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 223

Physical Properties of steel grade BS 2B 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
11 - -     0.43 -  
632 583 - 43.3 344   -  
329 - 31 11.2   441 111

Heat Treatment of steel grade BS 2B 21

Heat treated : 1736°C - 1573°C

Technological Curves of steel grade BS 2B 21

Cross Reference Table (Equivalent Grade) of BS 2B 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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