ASME SA573 Grade 70 [485] carbon steel plates covered by this specification are limited to a maximum thickness of 1.5 in. [40 mm]. As a well-known carbon steel plate and sheet supplier in China, we can directly supply SA573 Grade 485 hot rolled plates, SA573 Grade 70 steel sheets and SA573 Grade 70 plate price. Our stock in Shanghai has 600 tons carbon steel plates. We also supply heavy plate deep processing service, like cutting, welding, drilling, grinding and turning service.
ASME SA573 carbon steel standard specifies three grades structural carbon steel plates of improved toughness. The ASME SA573 Grade 70 steel shall be made by fine grain practice. Heat and product analysis shall conform to the chemical composition requirements prescribed for carbon, manganese, phosphorus, sulfur, and silicon as follows.
ASME SA573 Grade 70 carbon steel chemical composition (%)
| Element | Grade 70 |
| Carbon, ≤1/2" Thick | 0.27 |
| Carbon, >1/2"-1 1/2" Thick | 0.28 |
| Manganese | 0.85-1.20 |
| Phosphorus Max. | 0.03 |
| Sulfur Max. | 0.03 |
| Silicon | 0.15-0.40 |
ASME SA573 Grade 70 steel tensile requirement
| Grade | Yield Strength Mpa min. |
Tensile Strength Mpa |
Elongation min.% in 200mm |
Elongation min.% in 50mm |
| SA573 Grade 70 | 290[42] | 485-620 | 18 | 21 |
Application: SA573 Grade 70 carbon steel plates are suitable for service at atmospheric temperatures where improved notch toughness is important. If the steel is to be welded, a welding procedure suitable for the grade of steel and intended use or service shall be utilized.
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