METAL GRADES

HY-80 Military Grade Submarine Steel

Fabrication projects for the military present some of the biggest challenges to steel quality. Strict performance certifications are in place for military grade steel, with demanding specifications for strength as well as corrosion and impact resistance. The steel industry has responded with some of the highest quality steel yet produced, the HY series of steel. Certified to the MIL-S-21952 C/D and T9074-BD-GIB-010/0300 specifications, HY-80 steel offers high strength, excellent weldability, and the highest quality impact resistance.

HY 80 steel is commonly used for military projects, and is often employed to fabricate submarines, pressure vessels, heavy construction equipment, marine defense systems, petrochemical applications, and other premium top-flight steel fabrication projects. Submarine vessel construction puts every steel performance factor to the test. From the corrosive saltwater environment, the need for absolute integrity of the welded submarine surface, the increasing pressure forces on the vessel as it descends, to the explosive impact forces a military vessel may potentially encounter. HY-80 is a premium steel  formulated to be corrosion resistant, highly weldable, and exhibit the best impact resistance available.

Yield/Tensile Strength

Metric

Imperial

Tensile Strength, Ultimate

551.5 MPa

79 ksi

Tensile Strength, Yield

552 MPa

80 ksi

Elongation

18

18

Material Chemistry

C

MN

P

S

SI

NI

CR

MO

CU

V

TI

NB

0.13 - 0.18 %

0.1 - 0.4 %

0.015 %

0.008 %

0.15 - 0.38 %

2.5 - 3.5 %

1.4 - 1.8 %

0.35 - 0.6 %

0.25 %

0.03 %

0.02 %

N/A