ASTM A514 Steel Plate/PIPE Grade B E F H Q S-T1 Steel Plate is a quenched and tempered high strength weldable steel plate under ASTM standard. It is mainly used in places requiring high tensile and high yield. The rack used for the offshore platform is generally A514Gr.Q or A514Gr.Q modified, depending on the thickness, its hardness is between 235-290, the yield is greater than 630MPa, and the tensile strength is more than 700MPa. ASTM A514 is a widely used Marine structural steel.
Chemical Composition, %-ASTM A514 Steel Plate/PIPE Grade B E F H Q S
| Grade A | Grade B | Grade F | Grade H | Grade P | Grade Q | Grade S |
Maximum Thickness, in. [mm]
| Element | 11⁄4 [32] | 11⁄4 [32] | 6 [150] | 21⁄2 [65] | 2 [50] | 6 [150] | 6 [150] | 21⁄2 [65] |
| Carbon
Carbon Manganese |
0.15–0.21
0.15–0.21 0.80–1.10 |
0.12–0.21
0.12–0.21 0.70–1.00 |
0.12–0.20
0.12–0.20 0.40–0.70 |
0.10–0.20
0.10–0.20 0.60–1.00 |
0.12–0.21
0.12–0.21 0.95–1.30 |
0.12–0.21
0.12–0.21 0.45–0.70 |
0.14–0.21 0.14–0.21 0.95–1.30 | 0.11–0.21† 0.11–0.21 1.10–1.50 |
| Phosphorus, max | 0.030 | 0.030 | 0.030 | 0.030 | 0.030 | 0.030 | 0.030 | 0.030 |
| Sulfur, max | 0.030 | 0.030 | 0.030 | 0.030 | 0.030 | 0.030 | 0.030 | 0.020 |
| Silicon | 0.40–0.80 | 0.20–0.35 | 0.20–0.40 | 0.15–0.35 | 0.20–0.35 | 0.20–0.35 | 0.15–0.35 | 0.15–0.45 |
| Nickel | … | … | … | 0.70–1.00 | 0.30–0.70 | 1.20–1.50 | 1.20–1.50 | … |
| Chromium | 0.50–0.80 | 0.40–0.65 | 1.40–2.00 | 0.40–0.65 | 0.40–0.65 | 0.85–1.20 | 1.00–1.50 | … |
| Molybdenum | 0.18–0.28 | 0.15–0.25 | 0.40–0.60 | 0.40–0.60 | 0.20–0.30 | 0.45–0.60 | 0.40–0.60 | 0.10–0.60 |
| Vanadium | … | 0.03–0.08 | A | 0.03–0.08 | 0.03–0.08 | … | 0.03–0.08 | 0.06 max |
| Titanium | B | 0.01–0.10 | 0.01–0.10 | B | B | B | … | B |
| Zirconium | 0.05–0.15C | … | … | … | … | … | … | … |
| Copper | … | … | … | 0.15–0.50 | … | … | … | … |
| Boron | 0.0025 max | 0.0005–0.005 | 0.001–0.005 | 0.0005–0.006 | 0.0005–0.005 | 0.001–0.005 | … | 0.001–0.005 |
| Columbium
(Niobium),D max |
… | … | … | … | … | … | … | 0.06 |
Tensile and Hardness Requirements-ASTM A514 Steel Plate/PIPE Grade B E F H Q S
| Thickness, in. [mm] | Tensile Strength, ksi [MPa] | Yield Strength, min,A ksi [MPa] | Elongation in 2 in. [50 mm], min,B,C, D % | Reduction
of Area, min,B,C % |
Brinell
Hardness NumberE |
| To 3⁄4 [20], incl | 110 to 130 [760 to 895] | 100 [690] | 18 | 40F | 235 to 293 HBW |
| Over 3⁄4 [20] to 21⁄2 [65], incl | 110 to 130 [760 to 895] | 100 [690] | 18 | 40,F 50G | … |
| Over 21⁄2 [65] to 6 [150], incl | 100 to 130 [690 to 895] | 90 [620] | 16 | 50G | … |
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