flange bolt special alloy fastener 2205/s31803

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No.86-Flange Bolt special alloy fastener S31803


1.Super duplex Stainless Steel Fastner 2205/S31803 Bolts
2.guaranted quality
3.competitive price
4.ISO 9001:2008

1. Product Detail

Super Duplex Stainless Steel Fastener 2205/S31803 Bolts


M4-M100, 10#-4''




ISO 9001:2008 certificate, EN 10204 3.1 certificate


GB, ISO, DIN, BS, ANSI/ASME/JIS, according to customer's requirement.


(1) Stainless steel: 17-4PH, 321, 904L, A-286 etc.

(2) Duplex stainless steel: Duplex 2205, 2507, Zeron 100 etc.

(3) Alloy steel: Nickel alloy 20

Monel 400, K-500

Zirconium 702, 705

Nimonic 75, 80A, 90

Titanium grade 2, grade 5

Inconel 600, 601, 625, 718, X-750

Hastelloy B-2, B-3, C-22, C-276, X

Incoloy 800, 800H, 800HT, 825, 925

6.Surface finishing

Zn-plated, Ni-plated, Passivated, Tin-plated, Sandblast and Anodize, Chromate, Polish, Eletro Painting, Chrome plated etc.

7.Heat treatment

Annealing, Normalizing, Tempering, Quenching, Hardening, Spheroidizing, Stress Relieving


(1) guaranted quality

(2) competitive price

(3) promptly delivery

(4) rich experience

(5) excellent service

(6) good reputation

2. Material Introduction

UNS S31803

S31803 is a nitrogen enhanced duplex stainless steel that was developed to combat common corrosion problems encountered with the 300 series stainless steels. “Duplex” describes a family of stainless steels that are neither fully austenitic, like 304 stainless, nor purely ferritic, like 430 stainless. Often referred to as the work horse grade, 2205 is the most widely used grade in the duplex family of stainless steels.
2.1 The characteristics of S31803:

High general corrosion resistance
Pitting and crevice corrosion resistance superior to 317L austenitic stainless steel
High resistance to chloride stress corrosion cracking
High resistance to corrosion fatigue and erosion
Good sulfide stress corrosion resistance
High strength
Excellent impact toughness
Lower thermal expansion and high thermal conductivity than austenitic stainless steels
Good workability and weldability

2.2 The applications of Duplex S31803:

Chemical process vessels, piping and heat exchangers
Pulp mill digesters, bleach washers, chip pre-steaming vessels
Food processing equipment
Oil field piping and heat exchangers
Flue gas desulfurization equipment
Effluent scrubbing systems
Rotors, fans, shafts, and press rolls requiring combined strength and corrosion resistance
Cargo tanks for ships and trucks

Chemical Composition,%


Manufacture Process

Special alloy product Flow Chart

Quick Details

Place of Origin: Jiangsu China (Mainland)
Brand Name: HPF,QFC
Length: 6mm-500mm
Certificate: ISO 9001:2008
Size: M4-M100,10#-4''
Inspection: EN 10204 3.1 ceritificate
Grade: 4.8-12.9,A2-70,A4-80 etc.
Standard: GB,ISO,DIN,BS,ANSI etc.
Material: carbon steel,alloy steel etc.
Application: ship,power,chemical industry,car etc.
Category: hexagon head bolt,thread rod,stud bolt,U-shape bolt etc.
Type: hexagon head,flat head,round head


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