What is the difference between B8M Class 1 and Class 2?
Grade B8M Class 1 fasteners require carbide solution treatment, while Class 2 fasteners require an additional strain hardening operation which increases the strength and reduces the susceptibility to galling. Class 2 fasteners are marked “B8MSH” with the grade symbol underlined.
What is the difference between B8 and B8M?
These bolts have similar strength requirements but differ in their corrosion resistance. Grade B8 bolts are made from type 304 stainless steel, while Grade B8M bolts are made from a more corrosion-resistant type 316 stainless steel.
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.
What is the difference between Class 1 and Class 2 bolts?
Class 1 fasteners are carbide solution treated, while class 2 fasteners are carbide solution treated and strain hardened. The work hardening that occurs in the manufacturing of Class 2 fasteners increases their strength.
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 the difference between B7 and B16 bolts?
The “big brother” of B7 studs, B16 studs are found in similar situations, but are specified when a higher temperature is required. Vanadium is the main composition difference that separates B16 from B7, allowing the higher temperature limits.
What grade is B8M?
ASTM A193 Grade B8M
| Grade | Tensile Class | Raw Material Description |
|---|---|---|
| B8M | Class 1 | AISI 316 Stainless Steel, Carbide Solution Treated |
| B8M | Class 2 | AISI 316 Stainless Steel, Carbide Solution Treated and Strain Hardened |
What is B8M bolt?
ASTM A193 Grade B8M is a standard material specification for high tensile 316/316L stainless steel bolts, screws, studs or other external threaded fasteners for high-temperature, high-pressure service and other special purpose applications. Grade B8M fasteners are used for high strength pipeline bolting applications.
What is B8M class1?
ASTM A193 Grade B8M Class 1 is a standard material specification for corrosion resistant 316 stainless steel fasteners such as bolts, screws, studs, threaded rods and other externally threaded parts, for use in high tensile, high temperature and special purpose applications such as pressure piping & pressure vessels …
What is B8M material?
ASTM A193 Grade B8M is a standard material specification for high tensile 316/316L stainless steel bolts, screws, studs or other external threaded fasteners for high-temperature, high-pressure service and other special purpose applications.
What is A193 B8M material?
ASTM A193 Grade B8M is a standard material specification for corrosion resistant 316 stainless steel fasteners such as bolts, screws, studs, threaded rods and other externally threaded parts, for use in high tensile, high temperature and special purpose applications such as pressure piping & pressure vessels bolting.