ASTM A193 Grade B6, ASTM A193 Grade B6 Bolt, Nuts, ASTM A193 Bolt Manufacturer in India – Ananka Group

ASTM A193 Grade B6 fasteners are high-performance components designed for use in high-temperature and high-pressure environments. These fasteners are made from chromium stainless steel and are ideal for applications where strength, durability, and corrosion resistance are critical.

Table of Contents

The ASTM A193 standard includes alloy and stainless steel bolting for pressure vessels, valves, flanges, and fittings used in high temperature or high-pressure applications, as well as other special applications. There are many grades covered, including ferritic steels and austenitic stainless steels with designations such as B5, B6, B7, B8, B8M, and so on.

Characteristics of ASTM A193 Grade B6 Fasteners

Material Composition: These fasteners are manufactured from Type 410 stainless steel, which is a martensitic alloy containing 11.5-13.5% chromium. This composition provides excellent mechanical strength and moderate corrosion resistance.
High-Temperature Resistance: ASTM A193 Grade B6 fasteners are suitable for use in elevated temperatures, making them ideal for industries like power generation, petrochemical, and oil and gas.
Corrosion Resistance: While not as corrosion-resistant as austenitic stainless steels, Grade B6 fasteners offer adequate protection against oxidation and mild corrosive environments.
Mechanical Properties: The tensile strength of ASTM A193 Grade B6 fasteners typically exceeds 85,000 psi, ensuring reliable performance in demanding conditions.

Applications of ASTM A193 Grade B6 Fasteners

ASTM A193 Grade B6 fasteners are widely used in applications requiring high strength and moderate corrosion resistance. Some common applications include:

Heat exchangers
Pressure vessels
Boilers
Flanges and valves
Chemical processing equipment

Types of ASTM A193 Grade B6 Fasteners

Bolts: Available in hex head, socket head, and other configurations.
Nuts: Designed to complement B6 bolts, ensuring secure assemblies.
Studs: Ideal for high-pressure and high-temperature applications.
Washers: Provide support and distribute load effectively.

Advantages of ASTM A193 Grade B6 Fasteners

High Strength: Capable of withstanding heavy loads and stress.
Thermal Stability: Performs well in high-temperature environments.
Durability: Long service life even under challenging conditions.
Cost-Effective: Offers an economical solution for applications requiring moderate corrosion resistance.

Standards and Specifications

Standard: ASTM A193/A193M
Material Grade: B6 (Type 410 stainless steel)
Tensile Strength: Minimum 85,000 psi
Yield Strength: Minimum 45,000 psi
Hardness: Maximum 255 HBW or 26 HRC

ASTM A193 Grade B6 Chemical Composition

Carbon	Manganese, max	Phosphorus, max	Sulfur, max	Silicon	Chromium
0.08-0.15	1.00	0.040	0.030	1.00 max	11.5 – 13.5

ASTM A193 Grade B6 Mechanical Composition

Grade	Diameter	Tensile Strength	Yield Strength	Elongation	Reduction	Hardness
Grade B6	Up to M100, inclusive	760	585	15	50	—