China ASTM A193 Grade B8m Class 2 Stud Bolts / ASTM A193 Grade B8m Class 2 Fasteners, Find details about China Stud Bolt, Studs from ASTM A193 Grade B8m Class 2 Stud Bolts / ASTM A193 Grade B8m Class 2 Fasteners
ASTM A193 B8M is often available in national coarse (UNC) thread pitches,
if being used in traditional applications, threads are specified 8 threads
per inch (tpi) for diameters above one inch.
Element | B8M (AISI 316) |
Carbon | 0.08% max |
Manganese | 2.00% max |
Phosphorus, max | 0.05% |
Sulfur, max | 0.03% |
Silicon | 1.00% max |
Chromium | 16.0 - 18.0% |
Nickel | 10.0 - 14.0% |
Molybdenum | 2.00 - 3.00% |
Grade and Class | Diameter | Tensile Strength Min KSI | Yield Strength 0.2% Offset KSI | Elongation in 2in. Min, % | Reduction of Area Min, % | Hardness max |
CLASS 1: B8, B8C, B8M, B8P, B8F, B8T, B8LN, B8MLN | ALL | 75 | 30 | 30 | 50 | 223 HB or 96 HRB |
CLASS 1A: B8A, B8CA, B8MA, B8PA, B8FA, B8TA, B8LNA, B8MLNA | ALL | 75 | 30 | 30 | 50 | 192 HB or 90 HRB |
CLASS 2: B8, B8C, B8P, B8F, B8T | 3/4" and under | 125 | 100 | 12 | 35 | 321 HB or 35 HRC |
over 3/4 to 1" incl | 115 | 80 | 15 | 30 | 321 HB or 35 HRC | |
over 1" to 1-1/4" incl | 105 | 65 | 20 | 35 | 321 HB or 35 HRC | |
over 1-1/4" to 1-1/2" | 100 | 50 | 28 | 45 | 321 HB or 35 HRC | |
CLASS 2: B8M | 3/4" and under | 110 | 95 | 15 | 45 | 321 HB or 35 HRC |
over 3/4 to 1" incl | 100 | 80 | 20 | 45 | 321 HB or 35 HRC | |
over 1" to 1-1/4" incl | 95 | 65 | 25 | 45 | 321 HB or 35 HRC | |
over 1-1/4" to 1-1/2" | 90 | 50 | 30 | 45 | 321 HB or 35 HRC |