ASTM A193 Grade B8M Stainless Steel Threaded Rods

The ASTM A193 Grade B8M Threaded Rod is an all-thread bar product that serves as the raw material for manufacturing stud bolts or as a continuous length fastener where custom lengths are required on site. Made from austenitic stainless steel (AISI Type 316), these rods contain molybdenum, which imparts superior resistance to chloride-induced pitting and stress corrosion cracking. This makes them crucial for highly corrosive and high-temperature environments in petrochemical plants, marine applications, and power generation. Zeron Fasteners ensures these threaded rods are properly carbide solution treated to maintain optimal corrosion resistance and meet the stringent mechanical requirements of the A193 standard, providing a reliable source for high-strength, corrosion-resistant fastening material.

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ASTM A193 B8M Threaded Rods Manufacturer in India

ASTM A193 Grade B8M Threaded Rods Chemical Composition

Element Composition (Mass %)
Carbon (C) 0.08 max
Manganese (Mn) 2.00 max
Phosphorus (P) 0.045 max
Sulfur (S) 0.030 max
Silicon (Si) 1.00 max
Chromium (Cr) 16.0 – 18.0
Nickel (Ni) 10.0 – 14.0
Molybdenum (Mo) 2.00 – 3.00

ASTM A193 Grade B8M Threaded Rods Mechanical Properties

Grade / Class Size Range Tensile Strength (min) Yield Strength (min) Hardness (max)
B8M Class 1 All Sizes 75 ksi (515 MPa) 30 ksi (205 MPa) 223 HBW
B8M Class 2 Up to 3/4 inch 110 ksi (760 MPa) 95 ksi (655 MPa) 321 HBW
B8M Class 2 7/8 to 1 inch 100 ksi (690 MPa) 80 ksi (550 MPa) 321 HBW
B8M Class 2 1-1/8 to 1-1/2 inch 95 ksi (655 MPa) 65 ksi (450 MPa) 321 HBW

Features Product

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