What is B8 material?

ASTM A193 Grade B8 Raw Material

Grade Tensile Class Raw Material Description
B8 Class 1 AISI 304 Stainless Steel, Carbide Solution Treated
B8 Class 2 AISI 304 Stainless Steel, Carbide Solution Treated and Strain Hardened

What is a B8 stud?

Grade B8 stud bolts are made of AISI 304 stainless steel. These type of fasteners are made with austenitic stainless steel and require carbide solution treatment.

Is b8 stainless steel?

Good oxidation resistance in temperatures up to 870ºC. Continuous use of 304 in the 425-860ºC range is not recommended if subsequent aqueous corrosion resistance is important. Grade 304L is more resistant to carbide precipitation and can be heated into the above temperature range.

What is a Grade B7 bolt?

Grade B7 is a heat-treated chromium-molybdenum low-alloy steel with minimum tensile strength requirement of 125 ksi (860 Mpa), yield 105 ksi (720 Mpa), and maximum hardness of 35HRC. Boltport uses Alloy Steel AISI 4140 bar stock or forging stock to produce B7 headed and non-headed bolts.

What is B8 class1?

ASTM A193 Grade B8 Class 1 is a standard material specification for corrosion resistant austenitic stainless steel fasteners, for use in high tensile, high temperature and special purpose applications such as pressure piping & pressure vessels bolting.

Is B8M the same as 316?

A193 Grade B8M is chemically equivalent to AISI 316/316L stainless steel with improved strength, categorized in two different tensile classes namely class 1 and class 2.

What is class 2 stainless steel?

ASTM A193 Grade B8 Class 2 is a standard material specification for corrosion resistant austenitic stainless steel fasteners, for use in high tensile, high temperature and special purpose applications such as pressure piping & pressure vessels bolting.

How hard is a B7 bolt?

ASTM A193 defines both SI (Metric) and inch-pound units. Grade B7 is a heat-treated chromium-molybdenum low-alloy steel with minimum tensile strength requirement of 125 ksi (860 Mpa), yield 105 ksi (720 Mpa), and maximum hardness of 35HRC.