KR A Shipbuilding steel plate is used for shipbuiling's hull structure and platform. The shipbuilding steel plate grade A is the common tensile strength steel. KR Grade A steel has good toughness properties and higher strength, strong corrosion-resistance,the processing properties,and welding properties. KR A steel sheet also can be used for ship repairing, the offshore oil drilling platform, the platform pipe joints and other components.
KR grade A steel is a kind of hot rolled general tensile strength steel. KR steels come 4 grades in ordinary-strength steel for shipbuilding and grade A is the lowest one of them. The KR A grade steel plates have yield strength of 34,100 psi (235 MPa), and ultimate tensile strength of 58,000 - 75,500 psi (400-520 MPa).
KR A Shipbuilding steel plate Chemical composition(%)
C≤0.21 Mn≥ 2.5*C Si≤0.50 S≤0.035 P≤0.035
Note: CE: C+1/6Mn ≤ 0.40% Cu ≤ 0.35%,Ni ≤ 0.30%
KR Grade A steel sheet Mechanical property
Yield strength Mpa Min:235 Tensile strength Mpa:400-520 Elongation %Min:22 Impact Energy (KV J)(min):20 degree
Note: the impact energy under less 50mm thickness
KR Grade A steel Specification
Thickness: 4 - 260mm
Width: 1200 - 4000mm
Length: 3000 - 18000mm
Delivery States:
The delivery States of KR Grade A (RA) steel plate is Pretreatment, CR or Normalizing.CR (Controlled Rolling), N (Normalizing), TM, QT (Quenching and Tempering) and other delivery states.
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