Products FAQ

Yes, the standard mandates that they be supplied in a normalised condition.

Normalising: Heating to 30–50°C above Ac3, followed by air cooling, to refine the grain structure, relieve internal stresses and significantly improve low-temperature toughness.

Hot-rolled or controlled-rolled conditions cannot consistently meet impact requirements and are not a substitute for normalisation.

Standard Safe Temperature Range: -29°C to 343°C

This is the range recommended for long-term stable operation in engineering design. Within this temperature range, the mechanical properties of the material (such as strength and toughness) can be reliably guaranteed.

Extreme Temperature Limits: -46°C to 538°C

Lower Temperature Limit (-46°C): By using steel plates supplied in the normalised condition (commonly referred to as Gr.70N), the material can meet impact toughness requirements down to -46°C.

Upper Temperature Limit (538°C): According to ASME codes, the maximum permissible service temperature for this material in non-corrosive environments is 538°C.

ABS Grade E marine steel plates offer good weldability and have a low carbon equivalent. However, when welding thick plates, it is recommended to preheat appropriately depending on the ambient temperature and to use low-hydrogen welding consumables (such as E7018 or submerged arc welding flux certified by the classification society) to prevent cold cracks and maintain low-temperature toughness in the joint.

For use in areas requiring high low-temperature toughness, such as hull structures, decks, bulkheads, ice-exposed zones, icebreakers, polar vessels and offshore platforms.

Normalising refines the microstructure of the steel and ensures a uniform distribution of carbides. For Grade E, a material that must retain its toughness at -40°C, normalising is a standard process requirement for eliminating internal stresses and improving low-temperature impact resistance.

Among the major international classification societies, the following grades are generally regarded as equivalent to ABS Grade E:

Yes. We can provide 100% ultrasonic testing (UT) and can include third-party inspection reports upon request.

Yes, up to 200mm, but normalizing heat treatment is required to ensure mechanical properties.

Yes. We offer flame cutting and plasma cutting for your ABS Grade D marine paltes based on your drawings.

Yes. Depending on the thickness requirements, ABS Grade D is typically supplied in the hot-rolled (AR), controlled-rolled (CR) or normalised condition to optimise its internal structure.