ASTM A573/A573M grades include 58, 65 and 70. Steel plates are suitable for structural carbon-manganese-silicon steel plates with three tensile strength ranges. ASTM A573/A573M steel plates are mainly used to improve notch toughness at room temperature.
Carbon steel is an iron-carbon alloy, which contains up to 2.1 wt.% carbon. For carbon steels, there is no minimum specified content of other alloying elements, however, they often contain manganese. The maximum manganese, silicon and copper content should be less than 1.65 wt.%, 0.6 wt.% and 0.6 wt.%, respectively.
Carbon steel can be classified into three categories according to its carbon content: low-carbon steel (or mild-carbon steel), medium-carbon steel and high-carbon steel [1]. Their carbon content, microstructure and properties compare as follows:
| Carbon content (wt.%) | Microstructure | Properties | Examples | |
| Low-carbon steel | < 0.25 | Ferrite, pearlite | Low hardness and cost. High ductility, toughness, machinability and weldability | AISI 304, ASTM A815, AISI 316L |
| Medium-carbon steel | 0.25 – 0.60 | Martensite | Low hardenability, medium strength, ductility and toughness | AISI 409, ASTM A29, SCM435 |
| High-carbon steel | 0.60 – 1.25 | Pearlite | High hardness, strength, low ductility | AISI 440C, EN 10088-3 |
Grade:
1)GB: Q195, Q215, Q235A, Q235B, Q235C, Q235D, Q255A, 255B, Q275, Q295A, Q295B, Q345B, Q345C, Q345D, Q345E, Q390A, Q390B, Q390C,Q390D, Q390E, Q420, Q420B, Q420C, Q420D, Q420E, Q460D, Q460E, Q500D, Q500E, Q550D, Q550E, Q620D, Q620E, Q690D, Q690E
2)EN: S185,S235JR, S275JR, S355JR, S420NL, S460NL S500Q, S550Q, S620Q, S690Q
3)ASTM: Grade B, Grade C, Grade D, A36, Grade 36, Grade 40, Grade42, Grade 50, Grade 55, Grade 60, Grade 65, Grade 80
4)JIS: SS330, SPHC, SS400, SPFC, SPHD, SPHE
| A573/A573M Carbon Steel Plate Description |
| A573/A573M steel plate has good impact resistance, small temperature deformation, good welding performance, micro-alloying, high purity, low carbon equivalent and strong resistance to hydrogen sulfur. Such plates are commonly used in petroleum, chemical industry, power stations, boilers and other industries to make reactors, heat exchangers, separators, spherical tanks, oil and gas tanks, liquefied gas tanks, nuclear reactor pressure shells, boiler drums, liquefied petroleum gas bottles, turbine casings and other equipment and components. |
| Product Parameters | |
| Product Name | A573/A573M Carbon Steel Plate |
| Production Process | Hot Rolling, Cold Rolling |
| Material Standards | AISI, ASTM, ASME, DIN, BS, EN, ISO, JIS, GOST, SAE, etc. |
| Width | 100mm-3000mm |
| Length | 1m-12m, or Customized Size |
| Thickness | 0.1mm-400mm |
| Delivery Conditions | Rolling, Annealing, Quenching, Tempered or Standard |
| Surface Process | Ordinary, Wire Drawing, Laminated Film |
| Chemical Composition |
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| A573 | C max |
Mn | P max |
S max |
Si |
| Grade58 | 0.23 | 0.60-0.90 | 0.035 | 0.04 | 0.10-0.35 |
| Grade65 | 0.24-0.26 | 0.85-1.20 | 0.035 | 0.04 | 0.15-0.40 |
| Grade70 | 0.27-0.28 | 0.85-1.20 | 0.035 | 0.04 | 0.15-0.40 |
| Mechanical Properties |
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| A573 | Tensile Strength | Yield Strength |
Elongation % | |
| Grade58 | 58 | 400-490 Mpa | 220 Mpa | 21 |
| Grade65 | 65 | 450-530 Mpa | 240 Mpa | 20 |
| Grade70 | 70 | 485-620 Mpa | 290 Mpa | 28 |
| Physical Performance |
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| Physical Performance | Metric | Imperial |
| Density | 7.85g/cm3 | 0.282 lb/in³ |
| Scope of Application |
| ASTM A573 grade steel plate for welded bridge structures. |
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