RA hull construction steel metal thickness

ASME SA387Gr12CL2 steel plate chromium-molybdenum alloy steel plate has the properties of preventing hydrogen embrittlement, hydrogen corrosion, hydrogen peeling, and sulfide corrosion in a hydrogen environment at medium temperature (350-480 ℃), and has good low temper brittleness. RA hull construction steel, SA387 Gr12 CL2 steel plate is widely used in the manufacture of chemical fertilizer, petrochemical and thermal power plant equipment, such as synthetic ammonia reactor, coal gasifier, shift furnace and hydrogenation reactor.

RA hull construction steel, Wear resistant steel plate has good wear resistance:
The chemical composition of the alloy wear-resistant layer is 4-5% carbon and 25-30% chromium. The volume fraction of Cr7C3 carbide in the metallographic structure is more than 50%. The macro hardness is HRC56-62 and the hardness of chromium carbide is HV1400-1800. Because the carbides are distributed perpendicularly in the direction of wear, even when compared with cast alloys of the same composition and hardness, the wear resistance is more than doubled.

Tempering the important RA hull construction steel welding structure often use high temperature tempering to remove residual weld stress. Classification: high temperature tempering above 400 ℃, medium temperature tempering 250 ~ 400 ℃, low temperature tempering 150 ~ 250 ℃, Quenching +Tempering is improve RA hull construction steel strength, plasticity and toughness.

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