ASTM A193 Grade B8M Stud Bolts Properties

ASTM A193 Grade B8M Stud Bolts Chemical Requirements

Austenitic Steels

Grade Description and UNS Designatio Classes C Mn P S Si Cr Ni Mo Cu CbF Ti V N
ASTM A193 Grade B8M 316, S31600 1, 1A, 1D, 2 0.08 2.00 0.045 0.030 1.00 16.0-18.0 10.0-14.0 2.00-3.00 . . . . . . . . . . . . . . .

ASTM A193 Grade B8M Stud Bolts Mechanical Requirements

Austenitic Steels (Inch)

Grade Diameter,
in.
Heat TreatmentB Tensile Strength,
min, ksi
Yield Strength, min,
0.2 % offset, ks
Elongation in 4 D,min Reduction of Area, min Hardness,
max
ASTM A193 Grade B8M Classes 1 and 1D All diameters carbide solution treated 75 30 30 50 223 HBW or 96 HRBC
ASTM A193 Grade B8M Class 2 3/4 and under carbide solution treated and strain hardened 110 95 15 45 321 HBW or 35 HRC
over 3/4 to 1 incl 100 80 20 45 321 HBW or 35 HRC
Over 1 to 11/4 , incl 95 65 25 45 321 HBW or 35 HRC
over 11/4 to 11/2 , incl 90 50 30 45 321 HBW or 35 HRC

Austenitic Steels (Metric)

Grade Class ,
mm
Diameter Heat TreatmentB Tensile Strength,
min,MPa
Yield Strength, min,
0.2 % offset, MPa
Elongation in 4 D,min % Reduction of Area, min % Hardness,
max
ASTM A193M Grade B8M Classes 1 and 1D All diameters carbide solution treated 515 205 30 50 223 HBW or 96 HRBC
ASTM A193M Grade B8M Class 2 M20 and under carbide solution treated and strain hardened 760 655 15 45 321 HBW or 35 HRC
over M20 to M24, incl 690 550 20 45 321 HBW or 35 HRC
over M24 to M30, incl 655 450 25 45 321 HBW or 35 HRC
over M30 to M36, incl 620 345 30 45 321 HBW or 35 HRC

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