Stainless Steel 309 Fastener Manufacturer, Supplier, and Stockists in India

Stainless Steel 309 Fasteners, including nut bolts, studs, and anchors, are heat-resistant alloys designed for elevated temperature applications. These fasteners maintain strength and corrosion resistance in both oxidizing and reducing atmospheres up to 980°C.

SS 309 fasteners are extensively used in furnace components, heat exchangers, kilns, and catalytic converters where high thermal resistance is critical. Their chromium-nickel composition provides superior oxidation resistance at high heat.

These fasteners also offer moderate strength and toughness even at cryogenic temperatures. The 309 grade is especially useful in welding environments that demand stability and structural integrity under fluctuating temperatures.

Stainless Steel 309 NUT BOLT, STUD, and ANCHOR fasteners ensure secure and long-lasting installations in thermal plants, incinerators, and industrial furnaces, offering extended service life even under harsh thermal conditions.

Specification Table

Specification	Stainless Steel 309 Fastener
Material Grade	Stainless Steel 309
Standards	ASTM A313, ASME SA313
Form	Bolts, Nuts, Washers
Size Range	M3 to M30
Wall Thickness	1 mm – 15 mm
Length	Single Random, Custom Lengths
Density	8.0 g/cm³
Tensile Strength	620 MPa
Yield Strength (0.2% Offset)	310 MPa
Elongation	30%
Hardness	Rockwell B90
Melting Point	1400°C
Corrosion Resistance	Excellent in marine & chemical environments
Applications	Oil & Gas, Chemical Processing, Marine
Exported To	UAE, USA, Canada, Germany, Africa

Chemical Properties Table

Chemical Element	Stainless Steel 309 Fastener
Nickel (Ni)	12.0 - 15.0%
Chromium (Cr)	22.0 - 24.0%
Iron (Fe)	Balance
Manganese (Mn)	2.0%
Carbon (C)	0.20%
Silicon (Si)	1.0%
Other elements	Titanium (Ti) 0.5%, Sulfur (S) 0.03%

Mechanical Properties Table

Mechanical Property	Stainless Steel 309 Fastener
Tensile Strength (MPa)	620 MPa
Yield Strength (0.2% Offset, MPa)	310 MPa
Elongation (%)	30%
Hardness (Rockwell)	B90
Modulus of Elasticity (GPa)	200 GPa
Poisson's Ratio	0.3
Shear Modulus (GPa)	80 GPa
Density (g/cm³)	8.0 g/cm³
Reduction of Area (%)	45%
Ultimate Tensile Strength (MPa)	860 MPa

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