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ASTM A193 Grade B8M Class 2

ASTM A193 grade B8M Class 2 is a 316 stainless steel fastener that is also corrosion-resistant. These fasteners are used in creating bolts, studs, screws, threaded rods, and many more. You can find its application in many high tensile, temperature, and special purpose applications like chemical and petroleum construction.

A193 Grade B8M Class 2

B8M Class 2 Stainless steel, AISI 304, carbide solution treated, strain hardened

Mechanical properties

Size Tensile ksi, min Yield ksi, min Elong %, min RA % min HBW Rockwell
Up to 3/4 110 95 15 45 321 Max 35 HRC max
7/8 - 1 100 80 20 45
1-1/8 - 1-1/4 95 65 25 45
1-3/8 - 1-1/2 90 50 30 45

Chemical properties

Element B8M (AISI 316)
Carbon 0.08% max
Manganese 2.00% max
Phosphorus, max 0.045%
Sulfur, max 0.03%
Silicon 1.00% max
Chromium 18.0 - 20.0%
Nickel 8.0 - 11.0%
Molybdenum 2.00 - 3.00%

Compatible hardware

Bolt Grade Nut Washers
B8M Class 2 A194 Grade 8M SS316