ASTM A213 Especificado para Caldeiras de Aço-Liga Ferrítico e Austenítico Sem Costura, Superaquecedor e Tubos Trocadores de Calor.
Grau de liga: T2, T5, T9, T11, T12, T91, T92
Diâmetro externo: 28mm-168mm
Espessura da parede: 2mm-30mm
Composição química do tubo de aço de liga ASTM A213:
|
Grade
|
C
|
Mn
|
P
|
S
|
Si
|
Cr
|
Mo
|
V
|
N
|
Ni
|
Al
|
Nb
|
W
|
|
T2
|
0.10-0.20
|
0.30-0.61
|
0.025 max
|
0.025 max
|
0.10-0.30
|
0.50-0.81
|
0.44-0.65
|
|
|
|
|
|
|
|
T5
|
0.15 max
|
0.30-0.60
|
0.025 max
|
0.025 max
|
0.50 max
|
4.00-6.00
|
0.45-0.65
|
|
|
|
|
|
|
|
T9
|
0.15 max
|
0.30-0.60
|
0.025 max
|
0.025 max
|
0.25-1.00
|
8.0-10.0
|
0.90-1.10
|
|
|
|
|
|
|
|
T11
|
0.15 max
|
0.30-0.60
|
0.025 max
|
0.025 max
|
0.50-1.00
|
1.00-1.50
|
0.44-0.65
|
|
|
|
|
|
|
|
T12
|
0.15 max
|
0.30-0.60
|
0.025 max
|
0.025 max
|
0.50-1.00
|
1.00-1.50
|
0.44-0.65
|
|
|
|
|
|
|
|
T22
|
0.05-0.15
|
0.30-0.60
|
0.025 max
|
0.025 max
|
0.50 max
|
1.90-2.60
|
0.87-1.13
|
|
|
|
|
|
|
|
T91
|
0.08-0.12
|
0.30-0.60
|
0.020 max
|
0.010 max
|
0.20-0.50
|
8.00-9.50
|
0.85-1.05
|
0.18-0.25
|
0.03-0.07
|
0.40 max
|
0.04 max
|
0.06-0.10
|
|
|
T92
|
0.07-0.13
|
0.30-0.60
|
0.020 max
|
0.010 max
|
0.50 max
|
8.50-9.50
|
0.30-0.60
|
.015-0.25
|
0.03-0.07
|
0.40 max
|
0.04 max
|
0.04-0.09
|
1.50-2.00
|
Tabela de propriedades mecânicas do tubo de liga de aço ASTM A213:
|
Grade
|
Tensile Strength, Mpa
|
Yield Strength, Mpa
|
Elongation, %
|
Hardness, HB
|
|
T2
|
415 min
|
205 min
|
30 min
|
163 max
|
|
T5
|
415 min
|
205 min
|
30 min
|
163 max
|
|
T9
|
415 min
|
205 min
|
30 min
|
179 max
|
|
T11
|
415 min
|
205 min
|
30 min
|
179 max
|
|
T12
|
415 min
|
205 min
|
30 min
|
179 max
|
|
T22
|
415 min
|
205 min
|
30 min
|
163 max
|
|
T91
|
585 min
|
415 min
|
20 min
|
250 max
|
|
T92
|
585 min
|
415 min
|
20 min
|
250 max
|
Tolerância de diâmetro externo do tubo de aço de liga ASTM A213:
|
Method
|
Outside Diameter,mm
|
Tolerance, mm
|
|
Hot Rolled
|
OD=101.6
|
+0.4 / -0.8
|
|
101.6<OD=190.5
|
+0.4 / -1.2
|
|
|
190.5<OD=228.6
|
+0.4 / -1.6
|
|
|
Cold Drawn
|
OD<25.4
|
±0.10
|
|
25.4=OD=38.1
|
±0.15
|
|
|
38.1<OD<50.8
|
±0.20
|
|
|
50.8=OD<63.5
|
±0.25
|
|
|
63.5=OD<76.2
|
±0.30
|
|
|
76.2=OD=101.6
|
±0.38
|
|
|
101.6<OD=190.5
|
?0.38 / -0.64
|
|
|
190.5<OD=228.6
|
?0.38 / -1.14
|
|
Tolerância da espessura da parede do tubo de aço de liga ASTM A213:
|
Method
|
Outside Diameter, mm
|
Tolerance, %
|
|
Hot Rolled
|
OD=101.6,WT=2.4
|
+40 / -0
|
|
OD=101.6,2.4<WT=3.8
|
+35 / -0
|
|
|
OD=101.6,3.8<WT=4.6
|
+33 / -0
|
|
|
OD=101.6,WT>4.6
|
+28 / -0
|
|
|
OD>101.6,2.4<WT=3.8
|
+35 / -0
|
|
|
OD>101.6,3.8<WT=4.6
|
+33 / -0
|
|
|
OD>101.6,WT>4.6
|
+28 / -0
|
|
|
Cold Drawn
|
OD=38.1
|
+20 / -0
|
|
OD>38.1
|
+22 / -0
|
|
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