What grade of steel is HSS?
The lowest alloy grades, M50 and M52 high-speed steels, are properly known as intermediate high-speed steels because of their lower alloy contents. The cobalt-bearing grades, such as M35 and M42, are known as super high-speed steels because they exhibit enhanced hot hardness.
What is composition of HSS?
A common type of high-speed steel contains 18% tungsten, 4% chromium, 1% vanadium, and only 0.5–0.8% carbon. See also heat treating, stainless steel.
What is high-speed steel used for?
High Speed Steels (HSS) (High speed steel (HSS)), is primarily used as a cutting material (for cutting tools) and is a high-alloy tool steel. HSS is also used for the manufacturing tools because it is very good for grinding (which also permits regrinding of blunt tools, for example).
What is HSS structural steel?
Hollow Structural Sections (HSS) are manufactured hollow steel sections, typically of circular, rectangular, or square cross-section. Popular uses include architecturally exposed structural steel, staggered truss and conventional truss structures, and basic column or vertical bracing elements.
How do you identify HSS?
Defining High Speed Steel
- High alloy content, primarily tungsten or molybdenum, with lesser amounts of chromium, vanadium and cobalt;
- High carbon content—a minimum of 0.65% by weight, but commonly anywhere from 0.8% to 1.5% carbon content;
- Rockwell hardness of at least 64 HRC at room temperature;
How is HSS steel made?
Conventional High Speed Steels (HSS) are manufactured with the conventional steel’s melting processing which includes ingots solidification, forging or rolling, heat treatments and final quality inspections.
Why HSS is called high-speed steel?
It is often used in power-saw blades and drill bits. It is superior to the older high-carbon steel tools used extensively through the 1940s in that it can withstand higher temperatures without losing its temper (hardness). This property allows HSS to cut faster than high carbon steel, hence the name high-speed steel.
What is M7 HSS?
M7 High Speed Steel. M7 molybdenum high-speed tool steels are mainly used for cutting tools in all machining operations. This steel exhibits good abrasion-resistance because of its carbon and vanadium contents.
What is HSS beam?
What are the two basic types of HSS?
Common Grades and Properties of High Speed Steel Two general categories comprise these various classifications: those primarily alloyed by tungsten and those alloyed by molybdenum. Each grade is designated with T or M, respectively, as well as a unique number distinguishing it from other grades.