Marine Steel Plate NK Grade

Marine Steel Plate NK Grade

Steel plate pearlite tissue heat-resistant steel, at high temperature has a high thermal strength (δb ≥ 440MPa) and oxidation resistance, and has a certain resistance to hydrogen corrosion. As the steel contains a high content of Cr, C and other alloying elements, steel quenching tendency is...

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Product Details

Steel plate pearlite tissue heat-resistant steel, at high temperature has a high thermal strength (δb ≥ 440MPa) and oxidation resistance, and has a certain resistance to hydrogen corrosion. As the steel contains a high content of Cr, C and other alloying elements, steel quenching tendency is more obvious, poor weldability.

Steel plate is ultra-high strength steel, with high strength and toughness, hardenability is also good, no obvious temper brittleness, quenching and tempering treatment has a higher fatigue limit and anti-impact ability, low temperature impact toughness good. The steel is suitable for manufacturing large and medium-sized plastic molds requiring a certain strength and toughness.

High temperature has high creep strength and lasting strength. The steel is usually quenched and tempered as a heat treatment solution. As a plastic mold steel, with excellent machinability and good mechanical properties.

Chemical Ingredients

Carbon C: 0.38 to 0.45%

Silicon Si: 0.17 to 0.37%

Mn Mn: 0.50 to 0.80%

Sulfur S: allow residual content ≤ 0.035%

Phosphorus P: Allow residual content ≤0.035%

Cr Cr: 0.90 to 1.20%

Ni: Allowable residual content ≤0.030%

Copper Cu: Allowable Residual Content ≤0.030%

Molybdenum Mo: 0.15 to 0.25%


If you're satisfied with our marine steel plate nk grade, welcome to place orders with us. As one of the best Shipbuilding Steel Plate manufacturers and suppliers in China, we have bulk hot sale products in stock at your choice. For detailed chemical composition and free sample, contact our factory now. Competitive price and good service are offered.
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