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STAINLESS STEEL 321 & 321 H BOLT is austenitic stainless steel. Titanium, on the other hand, helps to stabilize this stainless steel. The titanium component makes it more resistant to oxidation and corrosion. It can withstand temperatures of up to 1500 degrees Fahrenheit. Carbide precipitation is likely to occur at these high temperatures, but the inclusion of titanium prevents it.

The STAINLESS STEEL 321 & 321 H BOLT cannot be hardened sufficiently by heating, but it can be done by cold working. This also provides excellent welding capabilities. They are also very ductile and simple to fabricate. It can withstand harsh environments, but it is not suitable for chlorine-bound environments.

STAINLESS STEEL 321 & 321 H BOLT has high tensile strength and can withstand harsh environments such as aqueous environments. These bolts are widely used in applications requiring high strength because they can carry the weight while also preventing corrosion pitting and cracking.

The main distinction between 321 and 321 H stainless steel bolts is the amount of carbon in them. The carbon content of 321 bolts is approximately 0.08 percent, while the carbon content of 321 H is approximately 0.04 percent to 0.10 percent. Other elements such as manganese, silicon, phosphorus, sulfur, chromium, and nitrogen are also present.

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Specification :-

Specifications DIN, ISO ,JIS ,GB, IS, BS, ASTM
Standard ASTM A193 / ASME SA193
Size M0.2 to M33 | 3/6" to 2" | Custom Sizes
Length 3 mm to 200 mm | Custom Sizes
Dimensions Standard DIN: DIN931, 933, 934, 7991, 976, 125, 558,7968, 7990
ISO: ISO 4014, 4017, 4018, 4016
ASME B18.2.1, B18.5
Form Hex, Threading, Square, Round as per Gauge Etc.
Threads Unless otherwise specified, the threads shall be rolled or cut and tapped horizontally or vertically
Threads available UNF, BSW, BSF, METRIC, UNC, or as required
Threads Configuration ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads
Certification Dual Certified As per ASTM & ASME Codes
Test Certificate As per EN 10204 / 3.1 Manufacturer Test Certificate, PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified
Raw materials Source JSPL, Mukund Steel, Tata Steel, Dhamm Steel, Usha Martin,etc.
Packing IN BULK: canton, pallet, Small Boxs / carton / pallet, or customer request
Surface Coating Cadmium Coating
Hot Dipped Galvanizing Coating
Ptfe Coated
Phosphate Coating
Teflon Coating
Xylon Coating
Zinc Coating

Equivalent Grades

SS 321 1.4541 S32100 SUS 321 X6CrNiTi18-10
SS 321H 1.4878 S32109 SUS 321H X12CrNiTi18-9

Chemical Composition

Grade C Mn Si P S Cr N Ni Ti
SS 321 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 - 19.00 0.10 max 9.00 - 12.00 5(C+N) – 0.70 max
SS 321H 0.04 – 0.10 2.0 max 1.0 max 0.045 max 0.030 max 17.00 - 19.00 0.10 max 9.00 – 12.00 4(C+N) – 0.70 max

Mechanical Properties

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.0 g/cm3 1457 °C (2650 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

Price Chart of Stainless Steel 321/321h Fastener

Stainless Steel Fasteners Price In India(INR) Price in UAE (Dirham)
Stainless Steel 321 Fastener 744 - 1,2666 7.94 - 26.47 Dirham
Stainless Steel 321 Hex Bolt 150 / peice 7.94 Dirham
Stainless Steel 321h Nuts 500 / peice 26.47 Dirham

Applications and Uses

  • Chemical Industries
  • Oil & Gas Industrires
  • Power Plant Industries
  • Shipbuilding Industries
  • Fertilizer Industrires
  • Petrochemical Industrires
  • Sugar Industrires
  • Cement Industrires

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