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NBR 8637 type B

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Brazil NBR NBR8637typeB Cast steel for railway use - Specification and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: NBR8637typeB / NBR 8637 type B
Category Grade Standard Region/Area Standard Content
Metals NBR 8637 type B ABNT NBR 8637 Brazil Cast steel for railway use - Specification

Chemical composition(mass fraction)(wt.%) of the NBR 8637 type B

Element Min Max Similar
C - 0.3200 -
Mn - 0.9000 -
P - 0.0400 -
S - 0.0400 -
Si - 1.5000 -

Mechanical Properties of steel grade NBR 8637 type B

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)
489 (≥) 363 (≥) 44 22 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 123

Physical Properties of steel grade NBR 8637 type B

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
12 - -     0.31 -  
735 876 - 42.3 131   -  
491 - 24 44.2   442 423

Heat Treatment of steel grade NBR 8637 type B

Heat treated : 1272°C - 1629°C

Technological Curves of steel grade NBR 8637 type B

Cross Reference Table (Equivalent Grade) of NBR 8637 type B

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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