304 Stainless Steel Screws | ASTM A193 UNS S30400 Specifications

304 Stainless Steel Screws

304S31, A837 304, A879 304, A880 304, BS2332, 1.4301, 304, S30400, X5CRNI18-10

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

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304 Stainless Bolts Type 304 Stainless Steel Fasteners Type 304 Stainless Forgings SS 304 Nuts 304 Stainless Steel Screws 304 SS Springs 304 SS Threaded Rod Type 304 Stainless Steel Washers A2 70 Studs A2 80 Nuts Astm A193 Grade B8 Bolts Astm A193 Grade B8A Stud Bolts Astm A194 Grade 8 Heavy Hex Nuts Astm A194 Grade 8A Hex Nuts Astm A320 Grade B8 Bolts Astm A320 Grade B8A Studs Astm F594C Stainless Steel Nuts Astm F594D Stainless Steel Nuts Astm F593 Type 304 Bolts Astm F593 Type 304 Screws 1.4301 Bolts

304 Stainless Steel Screws Properties

304 Stainless Steel Screws Chemical Requirements

Austenitic Steels

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 Screws 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 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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