ASTM A516 Grade 70 Bolt, Nuts, Washers Manufacturer in India

ASTM A516 Grade 70, ASTM A516 Grade 70 Bolt, Nuts, ASTM A240 Bolt Manufacturer in India – Ananka Group

ASTM A516 Grade 70 is a standard specification for pressure vessel plates, carbon steel, used at moderate and lower temperatures. The grade is well appreciated due to its excellent mechanical properties, good weldability, and suitability for the different fields of industry especially when the strength and toughness are required.

Composition and Characteristics of ASTM A516 Grade 70

The main elements of the ASTM A516 Grade 70 are primarily composed of carbon steel such as:

Carbon (C): 0.28% max

Manganese (Mn): 0.85-1.20%

Phosphorus (P): 0.035% max

Sulfur (S): 0.035% max

Silicon (Si): 0.15 -0.40%

In this context, as the mechanical properties of the steel get better after normalization, the various thicknesses of steel get produced. The “70” in the ASTM A516 Grade 70 refers to the minimum tensile strength of 70 ksi (485 MPa).

Mechanical Properties

Tensile Strength: 70-90 ksi (485-620 MPa)

Yield Strength: 38 ksi (260 MPa) min

Elongation: 17% min in 8 inches (200 mm), 21% min in 2 inches (50 mm)

Impact Toughness: Grade 70 possesses excellent toughness.

The notch toughness is extremely critical in those applications and the material is indeed well conditioned for that.

Benefits of ASTM A516 Grade 70:

Excellent Weldability: This grade can be welded very conveniently by most conventional welding techniques. Thus, it can be applied to major pressure vessels and boiler members.

Good Toughness: It provides good toughness, which is also required for low-temperature service applications in pressure vessel where brittle failure may occur at operating conditions.

High Strength: It has a minimum tensile strength of 70 ksi; therefore it gives excellent performance in pressure vessel applications since it is able to tolerate high pressure and stresses in such systems.

Grade 70, being versatile, is available in all and any forms of thicknesses. It can be shaped to any form and size, promoting it to be applied in quite many industries.

Common Applications

Pressure Vessels: are used in oil, gas, chemical processing along with the generation of power, whereby materials must have strength and resistance to degradation due to corrosion wherein pressure fluid and gases need to be contained.

Boilers: The critical requirement for strength and resistance to temperature and pressure make ASTM A516 Grade 70 steel widely used in making boiler fittings.

Storage Tanks: The application of this grade of metal in the petrochemical and oil industries has undergone massive fabrication of storage tanks, where toughness is an indispensable aspect for the material to last longer even under high pressure.

Heat Exchangers: The grade is used for the construction of the heat exchanger, and here thermal stability and mechanical strength become critical with high temperature operation.

Summary:

ASTM A516 Grade 70 is a highly durable and tough carbon steel material, making it ideal for applications in pressure vessels, boilers, and storage tanks that operate under moderate to low temperatures. Its excellent mechanical properties and weldability, along with its strength and toughness, make it a popular choice in industries that demand safety, reliability, and performance.

ASTM A516 Grade 70 Chemical Composition