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Grade A steel plate is used for shipbuiling's hull structure and platform. The shipbuilding steel plate grade A is the common tensile strength steel. It has good toughness properties and higher strength, strong corrosion-resistance,the processing properties,and welding properties.ASTM A131 Grade A steel plate can be used in the manufacture of the ship's hull structure whose weight is below 10000 tons,and usually do navigation around coastal and river area.
Grade A shipbuiling steel plate specification:
Thickness: 4mm to 260mm,
Width: 1200mm to 4000mm
Length: 3000mm to 18000mm.
Grade | C max | Si max | Mn | P max | S max |
Grade A | 0.21 | 0.50 | ≥ 2.5C | 0.035 | 0.035 |
Note: CE: C+1/6Mn ≤ 0.40%
Cu ≤ 0.35%,Ni ≤ 0.30%≤
Grade | Rm | Re(MPa) min | A% min | Akv/J min | ||||||
Grade A | 400-520 | 235 | 22 | E.T °C | Thickness (mm) | |||||
20 | ≤50 | >50-70 | >70-100 | |||||||
L | C | L | C | L | C | |||||
- | - | 34 | 24 | 41 | 27 | |||||
Note: In the list , Rm: tensile strength,Re: Yield strength,A%: elongation, E.T: experimental temperature,L: lengthways, C: crosswise.
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