ASTM A131M covers structural steel plates, shapes, bars, and rivets intended primarily for use in ship construction. Material in
ASTM A131 is available in Ordinary Strength and Higher Strength. The maximum thickness of products A131 furnished is 4 in. [100 mm] for plates and 2 in. [50 mm] for shapes and bars. Katalor can offer the shipbuilding material with standard ASTM A131, CCS, ABS, VL, LR, BV, NK, KR, RINA and RMRS etc.
ASTM A131 AH32 chemical composition:
|
Grade |
C |
Mn |
Si |
P |
S |
Al |
Cb |
|
0.18 |
0.90-1.60 |
0.10-0.50 |
0.035 |
0.035 |
0.015 |
0.02-0.05 |
|
A131 AH32 |
V |
Ti |
Cu |
Cr |
Ni |
Mo |
N |
|
0.05-0.10 |
0.02 |
0.35 |
0.20 |
0.40 |
0.08 |
- |
ASTM A131 AH32 mechanical properties:
|
Grade |
Yield Strength (Mpa) |
Tensile Strength
(MPa) |
Elongation in8 in.[200mm]
(%) |
Elongation in2 in.[50mm]
(%) |
Test Temperature(°C) |
|
A131 AH32 |
315 |
440-590 |
19 |
22 |
0 |
Plates A131 AH32 produced to a normalized heat treatment condition shall be marked with the suffix N to indicate that the plates have been normalized. A131 AH32 plates produced to a control rolled condition shall be marked with the suffix CR to indicate that the plates have been control rolled. A131 AH32 plates produced to a thermo-mechanical control processed condition shall be marked with the suffix TM to indicate that the plates have been thermo-mechanical control processed. A131 AH32 plates produced to a quenched and tempered heat treatment condition shall be marked with the suffix QT to indicate that the plates have been quenched and tempered.
For A131 AH32 plate, shape and bars, one set of three impact specimens shall be made from the thickest material in each test lot size of each heat, as required by Table 1 and Table 2 in ASTM A131. The set of impact specimens shall be taken from different as-rolled or heat-treated pieces of the heaviest gage produced. An as-rolled piece refers to the product rolled from a slab, billet, bloom, or directly from an ingot. Where the maximum thickness or diameter of various sections differs by 3/8in. [10 mm] or more, one set of impacts shall be made from both the thickest and the thinnest material rolled regardless of the weight represented.
