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ASTM A193 Grade B8 Stud Bolts | UNS S30400 Specifications
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  • ASTM A193 Grade B8 Stud Bolts

    • ASTM A193 Grade B8 Stud Bolts

    304S31, BS2332, 1.4301, 304, S30400, X5CRNI18-10

    ASTM A193 Grade B8 Bolts are manufactured from 304 Stainless Steel in accordance with ASTM A193 specification. Torqbolt is a prominent A193 gr B8 bolt supplier in India.

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    ASTM A193 Grade B8 Stud Bolts Properties

    ASTM A193 Grade B8 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 B8 304, S30400 1, 1A, 1D, 2 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0 . . . . . . . . . . . . . . . . . .
    Product Analysis VariationB 0.01 0.04 0.010 0.005 0.05 0.20 0.15 . . . . . . . . . . . . . . . . . .

    ASTM A193 Grade B8 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 B8 Classes 1 and 1D All diameters carbide solution treated 75 30 30 50 223 HBW or 96 HRBC
    ASTM A193 Grade B8 Class 2 3/4 and under carbide solution treated and strain hardened 125 100 12 35 321 HBW or 35 HRC
    over 3/4 to 1, incl 115 80 15 35 321 HBW or 35 HRC
    over 1 to 11/4 ,incl 105 65 20 35 321 HBW or 35 HRC
    over 11/4 to 11/2 ,incl 100 50 28 45 321 HBW or 35 HRC
    ASTM A193 Grade B8 Class 2B 2 and under carbide solution treated and strain hardened 95 75 25 40 321 HBW or 35 HRC
    over 2 to 21/2 incl 90 65 30 40 321 HBW or 35 HRC
    over 21/2 to 3 incl 80 55 30 40 321 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 B8 All diameters Classes 1 and 1D All diameters carbide solution treated 515 205 30 50 223 HBW or 96 HRBC
    ASTM A193M Grade B8 Class 2 M20 and under carbide solution treated and strain hardened 860 690 12 35 321 HBW or 35 HRC
    over M20 to M24, incl 795 550 15 35 321 HBW or 35 HRC
    over M24 to M30, incl 725 450 20 35 321 HBW or 35 HRC
    over M30 to M36, incl 690 345 28 45 321 HBW or 35 HRC
    ASTM A193M Grade B8 Class 2B M48 and under carbide solution treated and strain hardened 655 515 25 40 321 HBW or 35 HRC
    over M48 to M64, incl 620 450 30 40 321 HBW or 35 HRC
    over M64 to M72, incl 550 380 30 40 321 HBW or 35 HRC

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