How hard is HY-80?
HY-80 is a high yield strength (minimum of 80 ksi) , low carbon, low alloy steel with nickel, molybdenum and chromium. It has excellent weldability and notch toughness along with good ductility even in welded sections. This alloy is best known for use in shipbuilding for welded hull plates and structural use.
What is Hy steel?
HY 100 is a high yield steel with minimum yield strength of 100 ksi. While many steels offer high yield strength, HY 100 also offers exceptionally high impact strength as well. This combination makes HY 100 unique among steels. This material is used extensively in marine defense and petrochemical applications.
What is high yield steel?
High yield steels are designed to provide exceptional strength values after heat treatment and mechanical profiling. This is, in part, due to the alloying content of the steel grades which typically include low- to high-contents of titanium (Ti) and medium to ultra-high levels of molybdenum (Mo).
What type of steel is HY 80?
alloy martensitic steel
HY 80 is a high strength low alloy martensitic steel containing small additions of chromium and nickel to help with corrosion resistance and is supplied in the Type B condition bright finish.
How thick is submarine steel?
Making the hull. 4 Steel plates, approximately 2-3 in (5.1-7.6 cm) thick, are obtained from steel manufacturers. These plates are cut to the proper size with acetylene torches.
What kind of steel is HY 80?
alloy steel
HY-80 is a high-tensile, high yield strength, low alloy steel. It was developed for use in naval applications, specifically the development of pressure hulls for the US nuclear submarine program and is still currently used in many naval applications. It is valued for its strength to weight ratio.
Is Hy 80 carbon steel?
HY-80 steel is a member of the low carbon, low alloy family of steels with nickel, chromium and molybdenum (Ni-Cr-Mo) as alloying elements and is hardenable. The carbon content can range from 0.12 to 0.20 wt% with an overall alloy content of up to 8 wt%.
How thick is the skin of a submarine?
After the war the Navy built several fast attack submarines. These had hulls about an inch and a half thick. They had a test depth of 700 feet. The same hull thickness and quality of steel was used on the early nuclear submarines.
What is mild yield steel?
Yield strength is defined as being the amount of stress applied to a material that will deform it permanently. Like tensile strength, yield strength is measured in pascals (Pa) or megapascals (MPa). Mild steel as an approximate yield strength of 250MPa.
What is the difference between mild steel and high yield steel?
Mild steel and high tensile steel are two types of carbon steel structures. High ductile steel is a type of mild steel because both these contain a low amount of carbon. The main difference between mild steel and high tensile steel is that high tensile steel has a high quality strength than mild steel.
Is Hy 80 corrosion resistant?
HY-80 is considered to have good corrosion resistance and has good formability to supplement being weldable. Using HY-80 steel requires careful consideration of the welding processes, filler metal selection and joint design to account for microstructure changes, distortion and stress concentration.
What makes Hy 80 a high yield steel?
HY 80 is a high yield steel with a minimum yield strength of 80 ksi. While many steels offer high yield strength, HY 80 also offers exceptionally high impact strength as well. This combination makes HY 80 unique among steels. This material is used extensively in marine defense and petrochemical applications.
What kind of corrosion resistance does HY-80 steel have?
HY-80 is considered to have good corrosion resistance and has good formability to supplement being weldable. Using HY-80 steel requires careful consideration of the welding processes, filler metal selection and joint design to account for microstructure changes, distortion and stress concentration.
What kind of steel is Hy 80 tubing made of?
Certified to the MIL-S-21952 C/D and T9074-BD-GIB-010/0300. HY is also available in ID/OD Tubing up to 22′ length. HY 80 is a high strength low alloy martensitic steel containing small additions of chromium and nickel to help with corrosion resistance and is supplied in the Type B condition bright finish.
Which is harder HY-80 or austenitic stainless steel?
HY-80 is prone to the formation of martensite and martensite’s peak hardness is dependent on its carbon content. HY-80 is a FCC material that allows carbon to more readily diffuse than in FCC materials such as austenitic stainless steel. Nickel – Adds to toughness and ductility to the HY-80 and is also an austenite stabilizer.