AAR A516 Grade 70
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Pressure vessel
AAR TC 128/AAR A516
AAR A516 Grade 70
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General Product Description
AAR ASTM A516 Grade 70 is a produced in accordance with the supplementary requirements of the AAR Specifications for Tank Cars for use in tank car heads, shells, and sumps.
Dimension Range
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| Grade | Product type | Thickness (in) |
Width (in) |
Length (in) |
|---|---|---|---|---|
| AAR A516 70 | As-rolled | 0.188 - 1.50 | 60 - 120 | 240 - 1020 |
| AAR A516 70 | Normalized | 0.250 - 0.374 1) | 60 - 120 | 240 - 600 |
| AAR A516 70 | Normalized | 0.375 - 2.000 | 60 - 120 | 240 - 600 |
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Comparison
Grade
AAR A516 70
Product type
As-rolled
Thickness
(in)
(in)
0.188 - 1.50
Width
(in)
(in)
60 - 120
Length
(in)
(in)
240 - 1020
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Grade
AAR A516 70
Product type
Normalized
Thickness
(in)
(in)
0.250 - 0.374 1)
Width
(in)
(in)
60 - 120
Length
(in)
(in)
240 - 600
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Grade
AAR A516 70
Product type
Normalized
Thickness
(in)
(in)
0.375 - 2.000
Width
(in)
(in)
60 - 120
Length
(in)
(in)
240 - 600
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1) Inquire for availability.
Mechanical Properties
Tensile testing is performed in the transverse direction in accordance with ASTM A20. Specimens for tensile testing are prepared from material in the condition specified for plate use such as as-rolled, normalized, or post weld heat treated. The required tensile property requirements are tablulated below:
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| Grade | Thickness (in) |
UTS (ksi) | Elongation in 2" (min %) |
Elongation in 8" (min %) |
|---|---|---|---|---|
| AAR A516 70 | 0.188 - 2.000 | 70 - 90 | 21 | 17 |
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Comparison
Grade
AAR A516 70
Thickness
(in)
(in)
0.188 - 2.000
UTS (ksi)
70 - 90
Elongation in 2"
(min %)
(min %)
21
Elongation in 8"
(min %)
(min %)
17
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Impact Properties
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| Grade | Min. impact energy for longitudinal testing,Charpy V 0.393x0.393" test specimen 1) |
|---|---|
| AAR A516 70 | 15 ft-lbs / -50 °F 2) |
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Grade
AAR A516 70
Min. impact energy for longitudinal testing,Charpy V 0.393x0.393" test specimen 1)
15 ft-lbs / -50 °F 2)
1) Inquire for requirements at other temperatures.
2) For normalized plates, inquire for impact energy requirements in as-rolled condition.
Chemical Composition
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| Grade | C 1) (max wt %) |
Mn 1) (wt %) |
P (max wt %) |
S (max wt %) |
Si (wt %) |
Al 2) (wt %) |
Nb (max wt %) |
Ti (max wt %) |
V (max wt %) |
N (max wt %) |
B (max wt %) |
Ni (max wt %) |
Mo (max wt %) |
Cu (max wt %) |
Cr (max wt %) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AAR A516 70 | 0.23 | 0.85 - 1.20 | 0.25 | 0.015 | 0.15 - 0.40 | 0.015 - 0.060 | 0.020 | 0.020 | 0.030 | 0.010 | 0.0005 | 0.40 | 0.12 | 0.35 | 0.30 |
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Grade
AAR A516 70
C 1)
(max wt %)
(max wt %)
0.23
Mn 1)
(wt %)
(wt %)
0.85 - 1.20
P
(max wt %)
(max wt %)
0.25
S
(max wt %)
(max wt %)
0.015
Si
(wt %)
(wt %)
0.15 - 0.40
Al 2)
(wt %)
(wt %)
0.015 - 0.060
Nb
(max wt %)
(max wt %)
0.020
Ti
(max wt %)
(max wt %)
0.020
V
(max wt %)
(max wt %)
0.030
N
(max wt %)
(max wt %)
0.010
B
(max wt %)
(max wt %)
0.0005
Ni
(max wt %)
(max wt %)
0.40
Mo
(max wt %)
(max wt %)
0.12
Cu
(max wt %)
(max wt %)
0.35
Cr
(max wt %)
(max wt %)
0.30
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1) For each reduction of 0.01% below the specified maximum for carbon, an increase of 0.06% above the specified Mn max. is permitted, up to a max. of 1.50%.
2) A minimum of 0.015% must be acid-soluble.
Tin (Sn) maximum of 0.020.
Cu + Ni + Cr + Mo max 0.65.
Nb + V + Ti max 0.11.
Ti/N ratio max 4:1.
Carbon Equivalent
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| Thickness (in) | 0.188 - 2.000 |
|---|---|
| Maximum CEV (wt %) | 0.45 |
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Thickness (in)
Maximum CEV (wt %)
0.188 - 2.000
0.45
