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µP¸¹ | C | Si | Mn | P | S | V | Nb | Al | Ti |
Q345A | 0.20 | 0.55 | 1.70 | 0.045 | 0.045 | 0.02-0.15 | 0.015-0.060 | - | 0.02-0.20 |
Q345B | 0.20 | 0.55 | 1.70 | 0.040 | 0.040 | 0.02-0.15 | 0.015-0.060 | - | 0.02-0.20 |
Q345C | 0.20 | 0.55 | 1.70 | 0.035 | 0.035 | 0.02-0.15 | 0.015-0.060 | 0.015 | 0.02-0.20 |
Q345D | 0.18 | 0.55 | 1.80 | 0.030 | 0.030 | 0.02-0.15 | 0.015-0.060 | 0.015 | 0.02-0.20 |
Q345E | 0.18 | 0.55 | 1.80 | 0.025 | 0.025 | 0.02-0.15 | 0.015-0.060 | 0.015 | 0.02-0.20 |