ASTM A193 Grade B8MLCuNA Bolts, Stud Bolts, Fasteners

Standard Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications

ASTM A193 specification covers alloy and stainless steel bolting for pressure vessels, valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications. Several grades are covered, including ferritic steels and austenitic stainless steels designated B5, B6, B7, B8, B8M, etc. Selection will depend upon design, service conditions, mechanical properties, and high temperature characteristics. This specification is expressed in both inch-pound units and in SI units; however, unless the purchase order or contract specifies the applicable A193M specification designation (SI units), the inch-pound units shall apply

ASTM A193 Grade B8MLCuNA Raw Material

Grade Raw Material Description
B8MLCuNA UNS S31254 Stainless Steel, Carbide Solution Treated

ASTM A193 Grade B8MLCuNA Properties

ASTM A193 Grade B8MLCuNA Chemical Composition

Carbon Manganese, max Phosphorus, max Sulfur, max Silicon Chromium Molybdenum

ASTM A193 Grade B8MLCuNA Mechanical Properties

Grade Diameter Tensile Strength Yield Strength Elongation Reduction Hardness
Grade B8MLCuNA, Class 1A All Diameters 515 205 30 50 192 HBW or 90 HRB

ASTM A193 Grade B8MLCuNA Bolt Marking

Class Manufacture's Mark Grade Symbol
Class 1A BPF B9K or B8MLCuNA

Recommended Nuts & Washers

Bolting Grade Nut Grade Washer Grade
ASTM A193 Grade B8MLCuNA ASTM A194 Grade 8MLCuNA 254SMO / UNS S31254

ASTM A193 Grade B8MLCuNA Bolting

Hex Bolt Heavy Hex Bolts Stud Bolts Threaded Rods Anchor Bolts
Eye Bolts Socket Head Cap Screws Countersunk Screws J Bolts Square Head Bolts