What grade is B8M?

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 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 B7 material?

ASTM A193 B7 is a chromium molybdenum alloy steel. B7 achieves its strength through a heat-treating process where it is quenched and tempered at 1150 degrees F. For high-temperature applications, B7 steel is in high demand because of its tensile strength and excellent heat resistance.

What is B8M stud?

ASTM A193 Grade B8M bolts are made from a more corrosion-resistant type 316 stainless steel. The alloy of grade 316 stainless steel primarily constitutes of elements like chromium, nickel and molybdenum. All of these metals are responsible for the enhanced characteristics of the B8M Stud & ASTM A193 B8M Bolts.

What is difference between B7 and B7M?

ASTM A193 Grade B7M studs are identical in chemistry to Grade B7, as they are quenched and tempered carbon steel to achieve a lower hardness. However, they have a lower tensile strength than B7 studs.

What is a B8M bolt?

A193 B8M Stud Bolt and A194 8M Hex Nuts ASTM A193 B8M stud bolt, SS316 Stud bolt,SUS316 Stud bolt, B8M stud bolts, B8M heavy hex bolts, and other B8M fasteners are commonly used in marine and other heavy industrial environments that require corrosion resistant fasteners to be used.

What is Grade B8M Class 2 316 stainless steel?

Grade B8M Class 2 is strain hardened & carbide solution treated 316 stainless steel having minimum requirement of 100 ksi, yield 50 ksi with maximum hardness limit of 321 HBW or 35 HRC.

What are the mechanical properties of B8 Cl2?

Mechanical Properties Grade Size Dia (“) Size Dia (mm) Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min B8 CL2 <= 3/4 <=19.05 758 655 B8 CL2 > 3/4 <=1 >19.05 <=25.4 690 550 B8 CL2 > 1 <= 1.1/4 >25.4 <= 31.75 655 450 B8 CL2 > 1.1/4 <= 1./12 >31.75 <=38.1 620 345

What is the difference between B8M and B8 studs and fasteners?

It is offten incorrectly thought that B8 studs and fasteners (304 stainless) are mechanically weeker than B8M studs and fasteners (316 stainless steel). Type: Stud Bolts and Nuts. Standard: ASME B18.2.1, ASME B18.2.2.