Duplex Steel S31803/S32205 Fasteners

When it pertains to attaching options that can deal with challenging atmospheres, Duplex Fasteners are a game-changer. Made from duplex stainless steel, a mix of ferritic and austenitic steel, they use dual stamina of normal stainless steel with exceptional rust resistance.

Why are they unique? Their special combination, which consists of a high percentage of chromium, molybdenum, and nitrogen, provides them excellent resistance to pitting, crevice corrosion, and stress corrosion cracking. This is ideal for difficult locations such as offshore platforms, chemical plants, and sea areas where normal fasteners would perish.

But they are not only strong. Duplex Fasteners are also heat-resistant and have high fatigue strength, which means they can sustain severe pressure and temperature fluctuations. Whether installed in oil and gas, petrochemical, or desalination works, they ensure to endure without periodic maintenance.

In short, Duplex Fasteners are a reliable option when strength and corrosion resistance are extremely critical. They don't merely keep things together. They keep your work secure with confidence.

S31803/S32205 Duplex Steel ASTM A182 Fasteners Equivalent Grades Grades

STANDARD	UNS	WNR.
Duplex Steel 2205	S31803 / S32205	1.4462

Specification of Duplex Steel Fasteners

Specification : ASTM A479, A182 / ASME SA479, SA182

Dimension : DIN, ISO, ASTM, JIS, BS, GB, IS and all International Standards

Size Range : M3 - M56 | 3/6" to 2" | Custom Sizes

Length : 3 mm to 200 mm

Types : Nuts, Bolts, Screws, Sockets, Studs, Screw, Hex Set Screw, Socket Screw, Cap Screw, Pan Head Screw, Machine Screw, Socket Head Cap Screw, Allen Cap screw, Wing Screw, Washers, Spring Washers, Studs, Anchors, Marine Anchors, Nut, Hexagon Nut, Hex Nut, Hex Coupling Nut, Hex Domed Cap Nuts, Square Nut, Stud Bolts, Hex Head Bolts, Socket Hexagon Head Screw Anchor Bolt, U- Bolts, J Bolts, Mushroom Head Square Neck Bolts, T-Head Bolts, Wing Screw, Eye Bolt, Foundation Bolts, Structural Bolts.

Chemical Composition of Duplex Steel S31803/S32205 Industrial Fasteners

Grade	Common Name	C%	Mn%	Si%	P%	S%	Cr%	Ni%	Mo%	N%
2205	S31803	0.030	2.00	1.00	0.030	0.020	21.0-23.0	4.5-6.5	2.5-3.5	0.08-0.20
	S32205	0.030	2.00	1.00	0.030	0.020	22.0-23.0	4.5-6.5	3.0-3.5	0.14-0.20

Mechanical Properties Of ASME SA182 Duplex Steel Bolts & Nuts

Tensile Strength, ksi	0.2% Yield Strength, ksi	Elongation, %	Hardness [HRC]
90 min	65 min	25 min	293 max

Physical Properties of UNS S31803 & S32205 Duplex Stainless Steel Fasteners

	Density lbm/in3	Electrical Resistivity mW•in	Thermal Conductivity (BTU/hr•ft•°F)	Heat Capacity BTU/lbm•°F	Electrical Resistivity (in x 10-6)
at 68°F	0.278	27.6	8.7	0.112	33.5
at 212°F		26.1	9.2	0.119	35.4
at 392°F		25.4	9.8	0.127	37.4
at 572°F		24.9	10.4	0.134	39.4