ASTM A193 Grade B16

ASTM A193 Grade B16 Bolts

ASTM A193 Grade B16 is a standard material specification under ASTM A193, for alloy steel bolting material, for use in high tensile, high temperature and special purpose applications.

Grade B16 is a heat-treated chromium-molybdenum-vanadium (Cr-Mo-V) alloy steel with maximum tensile strength of 860 MPa, yield 725, and 35HRC hardness. ASTM A193 grade B16 is similar to grade B7 but the addition of vanadium enhances its strength holding capacity at high temperatures. Grade B16 is suitable for applications up-to 450°C (840°F). Fasteners produced under ASTN A193 Grade B16 standard are mainly used for power generation and allied sectors.

Grade B16 is specified for bolts, studs, stud bolts, threaded rods, screws, bar stock and similar parts, intended for use in bolting applications. Visit our A193-Grade-B16 microsite for specific details.

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ASTM A193 Grade B16 Raw Material

Grade Steel Description
Grade B16 Chromium-Molybdenum-Vanadium Alloy Steel, Quenched & Tempered

ASTM A193 Grade B16 Properties

ASTM A193 Grade B16 Chemical Composition

Carbon Manganese, max Phosphorus, max Sulfur, max Silicon Chromium Molybdenum Vanadium Aluminium
0.36 - 0.47 0.45 - 0.70 0.035 max 0.040 max 0.15 - 0.35 0.80 - 1.15 0.50 - 0.65 0.25 - 0.35 0.015 max

ASTM A193 Grade B16 Mechanical Properties

Diameter Tensile Strength, Min Yield Strength, Min Elongation, Min Reduction, Min Hardness, Max
Over M64 to M100 760 MPa 655 MPa 17 % 45 % 321 HBW or 35 HRC
Over M100 to M180 690 MPa 585 MPa 16 % 45 % 321 HBW or 35 HRC

Heat Treatment

Quenched & Tempered at 860º C minimum.

ASTM A193 Grade B16 Bolt Marking

Manufacturer's Mark Grade Marking

Recommended Nuts & Washers

Nut Grade Washer Grade
ASTM A194 Grade 16 ASTM F436

ASTM A193 Grade B16 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