ASTM A193 Grade B8CLNA 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 B8CLNA Raw Material

Grade Raw Material Description
B8CLNA AISI 347LN Stainless Steel, Carbide Solution Treated in Finished Condition

ASTM A193 Grade B8CLNA Properties

ASTM A193 Grade B8CLNA Chemical Composition

Carbon Manganese, max Phosphorus, max Sulfur, max Silicon Chromium Molybdenum
0.08-0.15 1.00 0.040 0.030 1.00 max 11.5 - 13.5 11.5 - 13.5

ASTM A193 Grade B8CLNA Mechanical Properties

Grade Diameter Tensile Strength Yield Strength Elongation Reduction Hardness
Grade B6 Up to M100, inclusive 760 585 15 50 --

ASTM A193 Grade B8CLNA Bolt Marking

Class Manufacture's Mark Grade Symbol
Class 1A BPF B8Z or B8CLNA

Recommended Nuts & Washers

Bolting Grade Nut Grade Washer Grade

ASTM A193 Grade B8CLNA 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