304 Stainless Steel Bolts | ASTM A193 UNS S30400 Specifications

304 Stainless Steel Bolts

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

304 Stainless Steel Bolts are austenitic stainless steel bolts manufactured from alloy containing chromium and nickel. Stainless Steel 304 Bolts are used for corrosive environments. TorqBolt is an eminent 304 stainless steel bolts supplier in India.

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304 Stainless Steel Bolts Properties

304 Stainless Steel Bolts Chemical Requirements

Grade Description and UNS Designation Classes C Mn P S Si Cr Ni Mo Cu CbF Ti V N
ASTM A193 Grade B8, B8A 304, S30400 1, 1A, 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 . . . . . . . . . . . . . . . . . .

304 Stainless Steel Bolts Mechanical Property

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 Classes 1 and 1D All diameters carbide solution treated 75 30 35 50 223 HBW or 96 HRBC
ASTM A193 Grade B8A Class 1A All diameters carbide solution treated in the finished condition 75 30 30 50 192 HBW or 90 HRB
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 B8A All diameters Class 1A All diameters carbide solution treated in the finished condition 515 205 30 50 192 HBW or 90 HRB
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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