ThePipingMart Blog Grades HY-130 Steel – Composition, Properties, and Uses

HY-130 Steel – Composition, Properties, and Uses

HY 130 Steel

If you’re a metallurgist or an engineer, you might have heard of HY 130 steel. HY stands for High Yield, and 130 stands for its minimum yield strength in ksi (1000 pounds-force per square inch). It rose to fame in the 1960s when it was used to construct submarines. But, the applications of HY 130 steel extend beyond submarines and can be a game-changer in multiple industries. In this blog post, we will discuss what HY 130 steel is, its composition, physical and mechanical properties, and its various uses.

HY 130 Steel Composition

HY 130 steel is a high-strength, low-alloy (HSLA) steel alloyed with copper, nickel, chromium, and molybdenum. Compared to conventional steels, it has a much higher alloy content and is designed to have exceptional toughness and corrosion resistance compared to other steels. Its chemical composition varies according to manufacturing processes and intended use.

HY 130 Steel Physical Properties

HY 130 steel has a high density of 7.85 g/cm³, excellent toughness, and high resistance to fracture and fatigue. It has good weldability and can withstand extremely low temperatures. Its elongation percentage ranges from 14-22%, depending upon the manufacturing process.

HY 130 Steel Mechanical Properties

HY 130 steel has very high strength, its minimum yield strength is 930MPa, and its tensile strength can reach up to 1250 MPa. Not just that, but its impact toughness is exceptional, up to 100 J. It has good formability and can be cold-worked and hot-worked, depending on the applications.

HY 130 Steel Uses

HY 130 steel is primarily used for submarine construction due to its high strength, high corrosion resistance and good toughness characteristics. This steel alloy is an excellent candidate for drilling rigs, rigging hardware, and mooring equipment for offshore oil platforms because it can withstand corrosive environments and harsh ocean conditions. It’s also used for structural steel fabrication, missile shell casings, and aircraft.

HY 130 Steel Hardness

HY 130 steel has a hardness of about 347 Brinell hardness (HB); it’s significantly harder than conventional steel, around 200 HB.

HY 130 Steel Heat Treatment

HY 130 steel can be heat-treated to achieve desired physical and mechanical properties.


HY 130 steel is a high-strength, low-alloy steel that demonstrates excellent toughness, corrosion resistance, and fatigue resistance. It is an extremely versatile steel alloy useful in different industries, including offshore oil drilling platforms, aircraft, and structural and marine constructions. With its unique properties, HY 130 steel has become an indispensable material for improving the strength and reliability of various structures. This remarkable steel is an excellent choice if you’re looking for top-notch strength and chemical properties.

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