AAR TC 128 B
Download data sheet
On this page
Show specs in
Imperial
Metric
General Product Description
AAR TC128 is a high-strength, carbon manganese steel plate for use in fusion-welded tank car tanks with a specified minimum yield strength of 50 ksi. The steel is produced to a fine grain practice and is available to a maximum thickness of 1 in. AAR TC128 is furnished in the as-rolled or normalized condition. When designated for low temperature service, the steel is provided in the normalized condtion with specified low temperature Charpy-V notch impact properties.
Dimension Range
Hide/Show specific columns Edit
Select columns to display
| Grade | Product type | Thickness (inmm) |
Width (inmm) |
Length (inmm) |
|---|---|---|---|---|
| TC128 B | As-rolled | 0.250 - 1.0006.35 - 25.40 | 60 - 1201500 - 3050 | 240 - 10206100 - 25910 |
| TC128 B | Normalized | 0.250 - 0.3746.35 - 9.50 | 60 - 1201500 - 3050 | 240 - 6006100 - 15200 |
| TC128 B | Normalized | 0.375 - 1.0009.52 - 25.40 | 60 - 1201500 - 3050 | 240 - 6006100 - 15200 |
Compare parameters
Select one parameter to compare
Comparison
Grade
TC128 B
Product type
As-rolled
Thickness
(inmm)
(inmm)
0.250 - 1.0006.35 - 25.40
Width
(inmm)
(inmm)
60 - 1201500 - 3050
Length
(inmm)
(inmm)
240 - 10206100 - 25910
Expand
Collapse
Grade
TC128 B
Product type
Normalized
Thickness
(inmm)
(inmm)
0.250 - 0.3746.35 - 9.50
Width
(inmm)
(inmm)
60 - 1201500 - 3050
Length
(inmm)
(inmm)
240 - 6006100 - 15200
Expand
Collapse
Grade
TC128 B
Product type
Normalized
Thickness
(inmm)
(inmm)
0.375 - 1.0009.52 - 25.40
Width
(inmm)
(inmm)
60 - 1201500 - 3050
Length
(inmm)
(inmm)
240 - 6006100 - 15200
Expand
Collapse
Thickness: Inquire for thickness less than 0.375 in.
Width: Inquire for widths greater than 120 in.
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:
Hide/Show specific columns Edit
Select columns to display
| Grade | Thickness (inmm) |
Yield strength (min ksi) |
Tensile strength (ksi) |
Elongation in 2" 1) (min %) |
Elongation in 8" 1) (min %) |
|---|---|---|---|---|---|
| TC128 B | 0.250 - 1.0006.35 - 25.40 | 50 | 81 - 101 | 22 | 16 |
Compare parameters
Select one parameter to compare
Comparison
Grade
TC128 B
Thickness
(inmm)
(inmm)
0.250 - 1.0006.35 - 25.40
Yield strength
(min ksi)
(min ksi)
50
Tensile strength
(ksi)
(ksi)
81 - 101
Elongation in 2" 1)
(min %)
(min %)
22
Elongation in 8" 1)
(min %)
(min %)
16
Expand
Collapse
1) See AAR Specifications for Tank Cars for elongation adjustments.
Impact Properties
Hide/Show specific columns Edit
Select columns to display
| Grade | Min. impact energy for longitudinal testing,Charpy V 0.393x0.393" test specimen 1) |
|---|---|
| TC128 B | 15 ft-lbs / -50 °F 2) |
Compare parameters
Select one parameter to compare
Comparison
Grade
TC128 B
Min. impact energy for longitudinal testing,Charpy V 0.393x0.393" test specimen 1)
15 ft-lbs / -50 °F 2)
1) For normalized plates, inquire for impact energy requirements in as-rolled condition.
2) Inquire for requirements at other temperatures.
Chemical Composition
Hide/Show specific columns Edit
Select columns to display
| Grade | C (max wt %) |
Mn (wt %) |
P (max wt %) |
S (max wt %) |
Al 1) (wt %) |
Si 2) (wt %) |
Nb (max wt %) |
Ti (max wt %) |
V (max wt %) |
B (max wt %) |
N (max wt %) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| TC128 B | 0.24 | 1.00 - 1.65 | 0.025 | 0.009 | 0.015 - 0.060 | 0.15 - 0.40 | 0.020 | 0.020 | 0.080 | 0.0005 | 0.010 |
Compare parameters
Select one parameter to compare
Comparison
Grade
TC128 B
C
(max wt %)
(max wt %)
0.24
Mn
(wt %)
(wt %)
1.00 - 1.65
P
(max wt %)
(max wt %)
0.025
S
(max wt %)
(max wt %)
0.009
Al 1)
(wt %)
(wt %)
0.015 - 0.060
Si 2)
(wt %)
(wt %)
0.15 - 0.40
Nb
(max wt %)
(max wt %)
0.020
Ti
(max wt %)
(max wt %)
0.020
V
(max wt %)
(max wt %)
0.080
B
(max wt %)
(max wt %)
0.0005
N
(max wt %)
(max wt %)
0.010
Expand
Collapse
1) A minimum of 0.015% must be acid-soluble.
2) Silicon range is 0.15 - 0.50 for thickness 0.751 - 1.000. Tin (Sn) maximum of 0.020, Cu maximum of 0.35. Cu + Ni + Cr + Mo max 0.65 Nb + V + Ti max 0.11. Ti/N ratio max 4:1.
Carbon Equivalent
Hide/Show specific columns Edit
Select columns to display
| Thickness (inmm) | 0.250 - 1.0006.35 - 25.40 |
|---|---|
| Maximum CEV (wt %) | 0.53 |
Compare parameters
Select one parameter to compare
Comparison
Thickness (inmm)
Maximum CEV (wt %)
0.250 - 1.0006.35 - 25.40
0.53
