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B977 Grade 21

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America ASTM B977Grade21 钛及钛合金锭的标准规范 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: B977Grade21 / B977 Grade 21
Category Grade Standard Region/Area Standard Content
Metals B977 Grade 21 ASTM B977 America 钛及钛合金锭的标准规范

Chemical composition(mass fraction)(wt.%) of the B977 Grade 21

Element Min Max Similar
V 3.5000 4.5000 -
Total Others - 0.4000 -
Total Each - 0.1000 -
O - 0.1300 -
N - 0.0300 -
H - 0.0030 -
Fe - 0.2500 -
C - 0.0800 -
Al 5.5000 6.5000 -

Mechanical Properties of steel grade B977 Grade 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)
928 (≥) 781 (≥) 14 21 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 124

Physical Properties of steel grade B977 Grade 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
44 - -     0.14 -  
568 126 - 21.3 221   -  
835 - 41 23.2   424 133

Heat Treatment of steel grade B977 Grade 21

Heat treated : 1873°C - 1894°C

Technological Curves of steel grade B977 Grade 21

Cross Reference Table (Equivalent Grade) of B977 Grade 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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