![ASME SA572 Grade 55 [380] steel plate](/d/file/1bf1127b263b5ec543b1fdc4d08e1a99.jpg)
ASME SA572 Grade 55 [380] material (ASTM A572 Grade 55 ) is a high-strength low-alloy columbium-vanadium structural steel. SA572 Grade 55 low alloy steel provides a minimum yield point of 380 MPa[55ksi] in thicknesses up to 15in. [380 mm]. As a professional low alloy steel plate and sheet supplier in China, we can supply ASME SA572 Grade 55 hot rolled plates, SA572 Grade 380 low alloy steel sheets and SA572 Grade 55 plate price.
ASME SA572 Grade 55 steel equivalent
| EN | ASTM | DIN | JIS | GB |
| S355JR (1.0045) | A572 Grade 55 | St52-3 | SM490A | Q345B |
| SS490 |
ASME SA572 Grade 55 [380] chemical composition max. (%)
| Grade | Carbon, max | Manganese, max | Phosphorus, max | Sulfur, max | Silicon, max |
| SA572 Grade 55 | 0.26 | 1.35 | 0.030 | 0.030 | 0.40 |
ASME SA572 Grade 55 [380] steel mechanical properties
| Grade | Yield Strength Mpa | Tensile Strength Mpa min. |
Elongation % in 200mm |
Elongation % in 50mm |
| SA572 Grade 55 | 380 [55] | 485 | 17 | 20 |
Tensile requirements (including yield point, tensile strength, and minimum elongation) and alloy content are also specified. General delivery and test report requirements are also cited.
SA572 Grade 55 steel plate tolerance
Thickness, width and length tolerances for A572 Grade 55 plates are in accordance with ASTM A6. ASTM A6 Half-Standard Flatness tolerances are available for plate thicknesses of 3/8 inches to 3.0 inches. Inquire for specific mill flatness capabilities.
For ASME SA572 low alloy steel applications, such as welded bridge construction, where notch toughness is important, notch toughness requirements are to be negotiated between the purchaser and the producer.
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