Chrome-Moly low alloy steel sa573 grade 70 hardness series contains 0.5% - 9% Cr and 0.5% - 1% Mo and lower than 0.20% carbon. 40CrNiMoA, 4340 and SNCM439 are the low alloy chromoly steel materials from the different standards. 40CrNiMoA steel sa573 grade 70 hardness is a Chinese standard chromium-molybdenum high strength steel with good hardenability and toughness.
Myanmar 4800 tons ABS AH36 and ABS A shipbuilding plates. This is very good customer of us, and we have cooperated many times for shipbuilding plates sa573 grade 70 hardness . The most frequently ordered is shipbuilding plates, almost hundreds tons every 2 month, which are finally supplied to Myanmar’s navy. Just in last year, we have supplier more than 4800 tons shipbuilding plates for the customer continuously.
A387 Gr 91 Cl 1 steel tensile requirements
Tensile strength, ksi [MPA]: 85 to 110 [585 to 760]
Yield strength, min, ksi [MPa]/(0.2% offset): 60 
Elongation in 2 in. [50mm], min, %: 18
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