ASME SA516 Grade 70 Carbon Steel Plate - 485-620 MPa Tensile Strength, 0.30% Max Carbon Content for Boiler Pressure Vessels
ASME SA516 carbon steel plates are available in four primary grades with varying tensile and yield strength ranges:
- SA516 Grade 55: Lower carbon content for general applications
- SA516 Grade 60: Balanced strength and weldability
- SA516 Grade 65: Enhanced strength characteristics
- SA516 Grade 70: Highest strength with carbon content up to 0.30%
Higher grades like SA516 Grade 70 may require preheating during metal arc welding processes, particularly with thicker steel plates.
SA516-70N refers to normalized steel plate products. Steel plates and sheets thinner than 40mm are typically supplied as rolled-steel coil, while plates with thickness above 40mm are supplied normalized. The material density is 0.284 cu/in³ (7861 kg/m³).
All ASME SA516 carbon steel plates are manufactured with mill certification following EN10204 3.1 or EN10204 3.2 standards. Comprehensive inspection services include:
- Third-party verification: MOODY, SGS, BV, GL, DNV, ABS, LIOYD'S
- Non-destructive testing: X-ray, ultrasonic testing (UT), magnetic particle inspection
| Grade | C % Max (6-12.5mm) | C % Max (12.5-25mm) | C % Max (25-50mm) | C % Max (>50mm) | Mn % Range | Si % Range | P % Max | S % Max |
|---|---|---|---|---|---|---|---|---|
| A516 Gr 55 | 0.18 | 0.20 | 0.22 | 0.25 | 0.55-0.98 | 0.13-0.45 | 0.035 | 0.035 |
| A516 Gr 60 | 0.21 | 0.23 | 0.23 | 0.25 | 0.60-0.90 | 0.13-0.45 | 0.035 | 0.035 |
| A516 Gr 65 | 0.24 | 0.26 | 0.26 | 0.28 | 0.85-1.20 | 0.13-0.45 | 0.035 | 0.035 |
| A516 Gr 70 | 0.27 | 0.28 | 0.28 | 0.30 | 0.85-1.20 | 0.13-0.45 | 0.035 | 0.035 |
| Grade | Tensile Strength (MPa) | Min Yield Strength (MPa) | Elongation 50mm (%) | Elongation 200mm (%) |
|---|---|---|---|---|
| A516 Gr 55 | 380-515 | 205 | 27 | 23 |
| A516 Gr 60 | 415-550 | 220 | 25 | 21 |
| A516 Gr 65 | 450-585 | 240 | 23 | 19 |
| A516 Gr 70 | 485-620 | 260 | 21 | 17 |
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