Stainless Steel 321 Fastener Manufacturer, Supplier, and Stockists in India

Stainless Steel 321 Fasteners are titanium-stabilized austenitic alloys known for their excellent resistance to intergranular corrosion. Fasteners such as nut bolts, studs, and anchors in this grade are perfect for high-temperature welded applications.

The presence of titanium minimizes carbide precipitation during welding, allowing these fasteners to be used in automotive exhausts, aircraft manifolds, and high-temperature equipment without compromising integrity.

SS 321 fasteners offer exceptional creep resistance and good mechanical strength at elevated temperatures. They are also suitable for environments with thermal cycling due to their excellent thermal stability.

Stainless Steel 321 NUT BOLT, STUD, and ANCHOR fasteners are widely utilized in aerospace, oil refineries, and chemical industries for their heat resilience and fabrication-friendly properties.

Specification Table

Specification	Stainless Steel 321 Fastener
Material Grade	Stainless Steel 321 Fastener
Standards	ASTM A240, ASME SA240
Form	Bolts, Nuts, Washers
Size Range	6 mm to 100 mm
Wall Thickness	1 mm – 25 mm
Length	Single Random, Double Random
Density	8.00 g/cm³
Tensile Strength	750 MPa
Yield Strength (0.2% Offset)	600 MPa
Elongation	35%
Hardness	Rockwell B90
Melting Point	1450°C
Corrosion Resistance	Excellent in marine & chemical environments
Applications	Oil & Gas, Aerospace, Chemical Processing
Exported To	UAE, USA, Canada, Germany, Africa

Chemical Properties Table

Chemical Element	Stainless Steel 321 Fastener
Nickel (Ni)	9.0%
Chromium (Cr)	17.0%
Iron (Fe)	70.0%
Manganese (Mn)	2.0%
Carbon (C)	0.08%
Silicon (Si)	1.0%
Other elements	Titanium (Ti) 5.0%, Phosphorus (P) 0.045%, Sulfur (S) 0.03%

Mechanical Properties Table

Mechanical Property	Stainless Steel 321 Fastener
Tensile Strength (MPa)	750
Yield Strength (0.2% Offset, MPa)	600
Elongation (%)	35
Hardness (Rockwell)	B90
Modulus of Elasticity (GPa)	200
Poisson's Ratio	0.3
Shear Modulus (GPa)	80
Density (g/cm³)	8.00
Reduction of Area (%)	50
Ultimate Tensile Strength (MPa)	800

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