Exploring the Properties and Applications of A681-08(2015) Steel Grade: A Comprehensive Overview

Exploring the Properties and Applications of A681-08(2015) Steel Grade: A Comprehensive Overview

Chemical Composition:

The chemical composition of A681-08(2015) steel grade is as follows:

– Carbon (C): 0.35 – 0.40%
– Chromium (Cr): 0.70 – 1.00%
– Manganese (Mn): 0.20 – 0.60%
– Silicon (Si): 0.10 – 0.60%
– Molybdenum (Mo): 0.20 – 0.60%
– Vanadium (V): 0.15 – 0.30%

Other elements such as sulfur (S) and phosphorus (P) may also be present in small amounts.

Mechanical Properties:

A681-08(2015) steel grade exhibits the following mechanical properties:

– Tensile Strength: 880 – 1870 MPa (depending on heat treatment)
– Yield Strength: 630 – 1450 MPa (depending on heat treatment)
– Elongation: 14 – 28%
– Hardness: 58 – 64 HRC (Rockwell C Scale)

Standard Number:

A681-08(2015) is the standard number for this steel grade. This standard was published in 2015 and provides guidelines for the chemical composition, heat treatment, and mechanical properties of tool steels.


Due to its high strength and hardness, A681-08(2015) steel grade is commonly used in various applications, including:

1. Cutting and forming tools: It is used to manufacture cutting tools, such as drills, end mills, taps, and saw blades, as well as forming tools like dies and punches.

2. Machine components: A681-08(2015) steel grade is used to produce machine components that require high wear resistance, such as gears, shafts, and bearings.

3. Molds: The high hardness of this steel grade makes it suitable for manufacturing molds used in various industries, including plastics, rubber, and metal fabrication.

4. Automotive industry: A681-08(2015) steel grade finds application in the automotive industry, particularly in the production of engine components, transmission parts, and suspension systems.

5. Aerospace industry: Due to its excellent strength and fatigue resistance, this steel grade is used in the construction of aircraft components, including landing gears and structural parts.

In summary, A681-08(2015) steel grade is a versatile tool steel that offers high strength, hardness, and wear resistance. It finds applications in various industries, including cutting tools, machine components, molds, automotive, and aerospace sectors.

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