SS 904L Fasteners Manufacturers & Suppliers

SS 904L Fasteners : Manufacturer & Supplier :

SS 904L fasteners

Contact Us For Your Requirement of SS 904L Fasteners

SS 904L Fasteners

Kinnari Steel Corporation are manufacturers,stockiest & suppliers of Nickel Alloy SS 904L Fasteners.SS 904L Fasteners have special quality finishing and duress for long life, high pressure and zero defects.

The product differentiation is based on the premier finish of SS 904L Fasteners with minimum burr at the edge . The ends for perfect welding and fabrication of the Wire in mega projects in oil and gas industry for long life of the product.

Orders at KSC are guaranteed fast delivery of the SS 904L Fasteners in the country. The main reason being we have an excellent warehousing and storage facilities for both finished and semi finished goods.They are made ready as per the urgent requirements of the customers. The SS 904L Fasteners are manufactured to sustain very high pressure and product warranty.

Lot of emphasis is placed on the packing and packaging . The SS 904L Fasteners are packed in wooden corrugated boxes foiled in plastic wraps and bubble wraps.

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SS 904L fasteners

All Nickel Alloy SS 904L Fasteners are offered with a NACE 3.1 Certification, Mill Test Certification and ISO 17025 Standards by a Government of India approved Laboratory. Positive Material Identification is done on all raw material procured at Kinnari Steel Corporation.

We have exported to over 45 countries including UAE, UK, Iran, Iraq, Qatar, Bahrain, Oman, Yemen, Lebanon, Jordan, Saudi Arabia, Malaysia, Indonesia, Singapore, Australia, New Zealand, USA, Canada, Mexico, Brazi, Netherlands, Germany, Italy, Spain, Serbia, Kuwait, Peru, Nigeria, Poland, South Africa, Denmark, Turkey, Egypt, Venezuela, Kuwait, Madagascar, Angloa & Srilanka.

The SS 904L Fasteners are used in Hardware , Petro-Chemical Industry, Oil and Gas Industry , Nuclear Industry, Pulp & Paper Indusry, Research & Development , Mega Projects & Defense & Development Industries. In fact wing to the special grade of steel Nickel Alloy SS 904L Fasteners are used for all critical applications.

Kinnari Steel is one of the most brands in the world that is known to fulfil niche requirements of clients. We are experts in high nickel based alloys of stainless steel and are serving the industry since 2 decades. We have executed countless projects and supplied to several oilfields as per custom requirements.

Our aim is to value addition to the customer. Our industry is filled with low quality high volume suppliers who are below the mark with what the industry needs. This results in the low life of the goods and thus project. The yield is low due to supply. We aim to change that. We must be the single source of purchase for SS SS 904L Fasteners. We are extremely proficient with this grade of piping. We pay attention to the details. All our energies are directed to providing an excellent customer purchase cycle. A small bottle neck can hurt our 100% customer satisfaction record. We have 0% rejection rate in 15 years and it does not look to change any time soon. These statistics are a result of the hard work and commitment of our team towards our organizational goal of achieving customer satisfaction.


Austenitic stainless steel characterized by good corrosion resistance in high corrosive environments ,called also “superaustenitic”.

It’s the last chance against corrosion problems before using nickel or cobalt alloys.

Its low “C” content, and the high “Mo” “Cr” content endow it with excellent resistance to corrosion even in the presence of chlorine ions. The Ni content of 24¸26% with the addition of copper gives them good strength against stress-corrosion conditions, also in presence of sulphur. This grade is largely used in paper mills, in desulphurization plants, and in chemical industry to synthetise phosphoric and sulphuric acid, and fertilizers.


Standard UNS Werkstoff Nr. EN BS KS JIS AFNOR
SS 904L N08904 1.4539 X1NiCrMoCu25-20-5 904S13 STS 317J5L SUS 890L Z2NCUD31-20AZ


Grade C Mn Si P S Cr Mo Ni Cu
SS 904L min. 19.0 4.0 23.0 1.0
max. 0.020 2.00 1.00 0.045 0.035 23.0 5.0 28.0 2.0

Mechanical Properties

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Allungamento
(% in 50mm) min
Rockwell B (HR B) Brinell (HB)
SS 904L 490 220 35 70-90 typical

Physical Properties

Grade Density
Elastic Modulus
Mean Co-eff of Thermal Expansion (µm/m/°C) Thermal Conductivity
Specific Heat 0-100°C
Elec Resistivity
0-100°C 0-315°C 0-538°C At 20°C At 500°C
SS 904L 8000 200 15 13 500 850

Grade Specification Comparison

Grade UNS No Old British Euronorm Swedish SS Japanese JIS
BS En No Name
SS 904L N08904 904S13 1.4539 X1NiCrMoCuN25-20-5 2562

Possible Alternative Grades

Grade Why it might be chosen instead of SS 904L
316L A lower cost alternative, but with much lower corrosion resistance.
6Mo A higher resistance to pitting and crevice corrosion resistance is needed.
2205 A very similar corrosion resistance, with the 2205 having higher mechanical strength, and at a lower cost to SS 904L. (2205 not suitable for temperatures above 300°C.)
Super duplex Higher corrosion resistance is needed, together with a higher strength than SS 904L

A very similar corrosion resistance, with the 2205 having higher mechanical strength, and at a lower cost to SS 904L. (2205 not suitable for temperatures above 300°C.)
Super duplex Higher corrosion resistance is needed, together with a higher strength than SS 904L.

Corrosion Resistance

Although originally developed for its resistance to sulphuric acid it also has a very high resistance to a wide range of environments. A PRE of 35 indicates that the material has good resistance to warm sea water and other high chloride environments. High nickel content results in a much better resistance to stress corrosion cracking than the standard austenitic grades. Copper adds resistance to sulphuric and other reducing acids, particularly in the very aggressive “mid concentration” range.

In most environments SS 904L has a corrosion performance intermediate between the standard austenitic grade 316L and the very highly alloyed 6% molybdenum and similar “super austenitic” grades.
In aggressive nitric acid SS 904L has less resistance than molybdenum-free grades such as 304L and 310L.
For maximum stress corrosion cracking resistance in critical environments the steel should be solution treated after cold work.

Heat Resistance

Good resistance to oxidation, but like other highly alloyed grades suffers from structural instability (precipitation of brittle phases such as sigma) at elevated temperatures. SS 904L should not be used above about 400°C.

Heat Treatment

Solution Treatment (Annealing) – heat to 1090-1175°C and cool rapidly. This grade cannot be hardened by thermal treatment.


SS 904L can be successfully welded by all standard methods. Care needs to be taken as this grade solidifies fully austenitic, so is susceptible to hot cracking, particularly in constrained weldments. No pre-heat should be used and in most cases post weld heat treatment is also not required. AS 1554.6 pre-qualifies Grade SS 904L rods and electrodes for welding of SS 904L.


SS 904L is a high purity, low sulphur grade, and as such will not machine well. Despite this the grade can be machined using standard techniques.

Bending to a small radius is readily carried out. In most cases this is performed cold. Subsequent annealing is generally not required, although it should be considered if the fabrication is to be used in an environment where severe stress corrosion cracking conditions are anticipated.

Type of Fasteners:

1. Bolts
2. Stud
3. Nuts
4. Washer
5. Allen caps
6. Screws
7. Grab
8. Clamp
9. Rivet.

In Form of:

1. Hex
2. Square
3. Round
4. Threading as per Gauge etc.

SS 904L fasteners

Problems that customers face when they buy from other companies:

  • Non availability
  • Late deliveries
  • Poor packaging/ Unprofessional Packing
  • Poor surface finish
  • No Mill test report
  • No control on quality and testing
  • High rejection rate
  • Poor after sales service
  • Supply of wrong grades
  • Material inconsistent with ASTM Standards
  • Very hard material for use
  • Dubious Practices
  • Lack of knowledge
  • Product fails under high pressure
  • High pricing of the goods due to supplier commission
SS 904L fasteners

Benefits that our company offers:

  • World class buying experience
  • Very quick delivery
  • Mill test report/ Digital Mill test report in accordance with EN10204 NACE 3.1, NACE 3.2
  • 3rd Party inspection
  • High pressure sustainability
  • Impeccable surface finish
  • Product replacement warranty
  • After sales support and service
  • High quality packaging/ Premium Packaging and Packing for sea and Air transport
  • Government and Private Laboratory Testing
  • Test certificate from ISO 17025 Standards Laboratory
  • Same day shipping of the goods
  • Highest stock in the country
  • Stringent Quality Testing and Control
  • ISO 9001:2008 , ISO 14001:2004, OHSAS 18001:2007 Certifications
  • 100% In house testing of the goods
  • <1% rejection rate of the goods in over a decade
  • Distributors in more than 13 countries
  • Compliance with ASTM/ASME Standards
  • Competitive pricing
  • High experience in working with Nickel Based Alloys
  • Consultancy for alternate sizes and material
  • Heat Number Traceability
  • Brand Marking and Identification on all products
  • Customized marking as per customer requirement.
SS 904L fasteners

SS 904L fasteners
About Kinnari Steel : Kinnari Steel Corporation is a privately held manufacturer, stockiest and exporter. It deals in Stainless steel and Alloy Steel : Stainless Steel 304 , 316 , 317 , 321 , Nickel Alloy SS 904L, Inconel , Hastelloy , Duplex Steel , Super Duplex Steel , Brass, Titanium, Tantalum etc. The products are Pipe Fittings, Tube Fittings, Flanges , Valves, Fasteners , Pipes & Tubes.

SS 904L Fasteners : The world leader in SS 904L nuts and bolts!
KSC is stockiest & supplier of SS 904L fasteners . We are the world leader in machining SS 904L products for corrosion resistance. Click here now to contact us.
Brand: KSC
Manufacturer: Kinnari Steel
Model: Fasteners
Product ID: NASSS 904L-FA
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