Duplex UNS S31803 Bolt

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Duplex S31803 Hex Head Bolt, UNS S31803 Flange Head Bolt, Grade UNS S31803 Eye Bolt, S31803 Duplex U Bolt, DIN 1.4462 Allen Bolt, ASTM A479 Duplex S31803 Stud Bolt, ASME SA182 Duplex S31803 Hex Bolt, S31803 Duplex Anchor Bolt.

What is meant by Duplex Steel UNS S31803 Bolts?

Duplex Steel UNS S31803 Bolts are made of austenitic-ferritic stainless steel, which was developed to be more rigid and highly corrosion-resistant than 300 series stainless steel. It helps users prevent stress corrosion cracking, often with stainless steel 316 and 317. Duplex steel UNS S31803 is used to manufacture bolts of austenitic and ferritic alloys. Combining these alloys increases the grade’s strength and resistance to several chemical processes.

Properties of Duplex UNS S31803 Bolts:

  • At -50 degrees Celsius, Grade S31803 Hex bolts transform from ductile to brittle. It can also become brittle at temperatures between 300 and 1000 degrees Celsius. Therefore, a proposed temperature range is -50 to 300 degrees Celsius.  
  • ASTM A479 Duplex S31803 Threaded Rods get embrittled when exposed to temperatures higher than 300 degrees Celsius and lose their ability to resist corrosion.  
  • Duplex UNS S31803 Bolts offer a better corrosion alternative to stainless steel because they exhibit superior sulfide corrosion resistance, chloride etching rigidity, and crevice corrosion resistance compared to 317L.  
  • It’s essential to remember that when oxidizing media are present, pitting corrosion can be an issue in chloride solutions. In these circumstances, the passive (protective) layer of the S31803 Duplex Hex Nuts material may be harmed, leading to localized pitting.  
  • The austenitic grade of alloy duplex steel is used to make Duplex UNS S31803 Allen Bolts. Due to this, alloy steel bolts have a variety of characteristics. Due to the presence of carbon as an alloying element, some bolts’ features include corrosion resistance and resistance to pitting corrosion.  
  • Additionally, the DIN 1.4462 Dupex  U Bolts are employed in applications requiring high temperatures because of their excellent flexibility, high durability, and stability at high temperatures, as well as their superior toughness and high strength.  

About Duplex UNS S31803 Bolt

Applications of Duplex UNS S31803 Bolts:

  • ASME SA479 Duplex Steel UNS S31803 Bolts are appropriate for maritime situations, shuttered water systems, and some food processing operations because they are immune to chloride cracking and crevice corrosion due to a mix of chromium, molybdenum, and nitrogen.  
  • Bolts made of duplex steel UNS S31803 are used in the chemical sector on pipelines, storage containers, and processing machinery.  
  • Digesters, bleaching machinery, stock-handling systems, and liquid tanks employ Duplex UNS S31803 Coated Bolts in the pulp and paper business.  
  • In chloride and hydrogen sulfide conditions, Duplex Steel UNS S31803 bolts are utilized in maritime and oil and gas extraction and processing.  

Specification Of Duplex UNS S31803 Bolt

SpecificationsASTM A479, A182 / ASME SA479, SA182 and DIN, ISO ,JIS ,GB, IS, BS, ASTM and all International Standards
SizeM3 - M100 | 3/6″ - 4″ | Custom Sizes
Length3 mm - 200 mm | Custom Sizes
DimensionsDIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3
Threads ConfigurationASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads and UNF, BSW, BSF, METRIC, UNC, or as required
FormHex, Threading, Square, Round as per Gauge Etc.
HeadHex, Square, Round, Hex flange, Flat, T-head & Triangular etc.
Neck typeHex, Square, Triangular, Oval & Knurled etc.
Manufacturing ProcessPassivation /plain, Wire Drawing, Cold Heading, Insert tapping, Heat Treatment, Surface Plating, Inspection, Packing.
Surface CoatingBlack Oxide, Cadmium, Galvanized, Teflon, Xylan, Zinc, Others Upon Request
PackingIN BULK: carton, pallet, Small Boxes or customer request
Test CertificateAs per EN 10204 / 3.1 Manufacturer Test Certificate, PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified
CertificationDual Certified As per ASTM & ASME Codes
Delivery timeRegular product : 7-15 days, Custom product : 2-4 weeks

Equivalent Grades Duplex UNS S31803 Bolt

Duplex Steel 31803S318031.4462

Chemical Composition Duplex UNS S31803 Bolt

Duplex Steel S318030.030 max1.20 max0.80 max0.035 max0.020 max24.00 – 26.003.00 – 5.006.00 – 8.000.24 – 0.3258.095 min

Mechanical Properties Duplex UNS S31803 Bolt

DensityMelting PointTensile StrengthYield Strength (0.2%Offset)Elongation
7.9 g/cm31402 °C (2555 °F)Psi – 75000 , MPa – 515Psi – 30000 , MPa – 20540 %

Dimensions Of Duplex UNS S31803 Bolt

Duplex Steel Bolts Dimensions Chart :

Nominal Size
or Basic

Full-Size Body
Width Across Flats,
Width Across
Corners, G
Head Height, H BasicRadius of
Fillet, R
Nominal Thread
Length for Bolt
MaxMinMaxMin6 in. and
6 in.
7⁄80.8750.8950.8521 5⁄161.3121.2691.5161.44737⁄640.6040.5310.060.0222.25
111.0220.9761 1⁄21.51.451.7321.65343⁄640.70.5910.
1 1⁄81.1251.1491.0981 11⁄161.6881.6311.9491.8593⁄40.780.6580.
1 1⁄41.251.2771.2231 7⁄81.8751.8122.1652.06627⁄320.8760.7490.090.032.753
1 3⁄81.3751.4041.3452 1⁄162.0621.9942.3822.27329⁄320.940.810.090.0333.25
1 1⁄21.51.5311.472 1⁄42.252.1752.5982.4811.0360.9020.
1 5⁄81.6251.6581.5912 7⁄162.4382.3562.8152.6161 3⁄321.1160.9780.
1 3⁄41.751.7851.7162 5⁄82.6252.5383.0312.8931 5⁄321.1961.0540.120.043.754
1 7⁄81.8751.9121.8392 13⁄162.8122.7193.2483.0991 1⁄41.2761.130.120.0444.25
222.0391.964332.93.4643.3061 11⁄321.3881.1750.
2 1⁄42.252.3052.2143 3⁄83.3753.2623.8973.7191 1⁄21.5481.3270.190.064.755
2 1⁄22.52.5592.4613 3⁄43.753.6254.334.1331 21⁄321.7081.4790.
2 3⁄42.752.8272.7114 1⁄84.1253.9884.7634.5461 13⁄161.8691.6320.190.065.756
333.0812.9614 1⁄24.54.355.1964.95922.061.8150.
3 1⁄43.253.3353.214 7⁄84.8754.7125.6295.3722 3⁄162.2511.9360.190.066.757
3 1⁄23.53.5893.4615 1⁄45.255.0756.0625.7862 5⁄162.382.0570.
3 3⁄43.753.8583.7265 5⁄85.6255.4376.4956.1982 1⁄22.5722.2410.190.067.758
444.1113.975665.86.9286.6122 11⁄162.7642.4240.

Different Types Of Duplex UNS S31803 Bolt

Different Types Of Bolts

Application of Duplex UNS S31803 Bolt

Testing of Duplex UNS S31803 Bolt

Packing of Duplex UNS S31803 Bolt

Destination Of Duplex UNS S31803 Bolt

DIN 1.4462 Allen Bolt Manufacturer in Jamnagar, ASME SA479 Duplex S31803 Heavy Hex Bolt Stockist in Coimbatore, ASTM A479 Duplex S31803 Anchor Bolt Exporter in Bangalore, S31803 Duplex Eye Bolt Supplier in Hyderabad, Duplex S31803 Hex Head Bolt Manufacturer in Ahmedabad, S31803 Duplex U Bolt Stockist in Pune, UNS S31803 Flange Head Bolt Supplier in Chennai, Grade UNS S31803 Hex Bolt Exporter in Pimpri-Chinchwad.
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ASME SA479 Duplex S31803 Hex Head Bolt Catalogue, DIN 1.4462 Allen Bolt Price Per Kg, S31803 Duplex Stud Bolt Weight Chart, Duplex S31803 Stud Bolt Specification, S31803 Duplex U Bolt Grade Chart, ASTM A479 Duplex S31803 Hex Bolt Price List in India, Grade UNS S31803 Anchor Bolt at Factory Price, UNS S31803 Eye Bolt Weight Calculator, Duplex S31803 Flange Head Bolt Price List, S31803 Duplex Eye Bolt at Factory Price.