A material which comes with heat resistance, corrosion resistivity and high durability and strength is an Inconel 625 fasteners. This material comes with unique characteristics. One of them is it is used in environments from Cryogenic to Temperatures at 1800° F or 1000 ° C.
Prime advantage of werkstoff 2.4856 socket head cap screw is resistance to oxidation. To make it stronger material, this material also has Niobium added. It is mostly in demand and requested by Chemical processing companies and for the purpose of power generation.
There are many coatings that are applied to alloy 625 bolts, when it comes to lasting for a longer period of time. Primarily 7 types of known coatings are applied, which are Teflon-coated, Phosphate-coated, Zinc-coated, Pfte-coated, Xylon-coated, Cadmium-coated, Hot-dipped galvanized coated.
This is the only reason why it can withstand temperatures up to 1000 ° C. They are also a suggested material for cryogenic applications. These coatings also make them prone to oxidation. For rough usage, harsh environments and performance-oriented applications, we make use of this material.
Alloy 625 bolts
UNS N06625 hex bolts
DIN 2.4856 nuts
Along with excellent corrosion resistance properties, ASME SF468 625 Inconel stud bolts also inherits high thermal-fatigue strength. It can withstand extreme conditions such as high temperatures, up to 1000 ° C. It can also have a property to resist carburisation and oxidation.
Due to its high temperature strength, it is one of the reasons why it is applicable in advanced reactors. They also offer good resistance to oxidizing gases, when exposed to high temperatures. In fact, this is the only reason why it is favoured and is in demand in generator tubes, baffles and tube sheets.
|CNC Machined||Hot Forged||Inconel 625 bolts Length|
|upto M100/ 4" Dia||upto M36/ 1-1/2" dia||upto 1500 mm|
|Inconel 625 bolts Thread||Specification||MTC|
|BSW, METRIC, UNF, UNC, BSF, custom ||ASTM B468 | ASME SB468||EN 10204 3.1/ 3.2|
|Use||gas turbine engine ducting, chemical|
Nickel alloy 625 screws
ASTM F468 625 inconel stud bolts
Inconel alloy 625 threaded rod
|Inconel 625||ХН75МБТЮ||NCF 625||2.4856||NA 21||N06625||NC22DNB4MNiCr22Mo9Nb||NiCr23Fe|
|inconel 625||Tensile Strength||inconel 625 Hardness||Reduction of area||0.2% Proof Stress||Elongation|
There are mainly five types of UNS N06625 threaded rod, each uniquely available on the basis of their unique characteristics.
Standards of this rod is as per:
Although it exhibits good stress when exposed to high temperatures, nickel alloy 625 screw, it has some limitations based on the stress factors. This material can withstand tensile strength ranging between 120-160 ksi or 800-1200 MPa.
In solution-treating conditions, it has tensile strength ranging between 700-900 MPa. Adding to this, the tensile strength for the material may vary, depending on the precise proportion of ingredients. Even a slight change in Carbon, Nickel or Iron contents may alter the final strength of the product.
This is one of the reasons why many industries use this product with differing properties for meeting their needs and expectations.
Since it provides good corrosion resistance and can withstand extreme conditions, there are certain limitations for the usage of DIN 2.4856 nuts. When spoken with respect to cost efficiency, this material is most expensive. Another constrains lies in the challenges that it brings along and how to deal with it.
Though it resists corrosions, on the other, the same property makes it challenging to stamp and deep draw, which can then become prone to cracking.
Adding to this, high hardness property of this material causes high wear on stamping or deep drawing tools, which then results in shorter life span, following by increased manufacturing costs.
|Inconel 625 hex bolts Length||Diameter|
|2” – 2 3/4"||5/8”|
|1 1/2" – 1 3/4"||1/2"|
|4” – 4 1/2”||7/8”|
|3” – 3 3/4"||3/4"|
|5” – 5 1/2"||1 1/8”|
|5” – 5 1/2"||1”|
|7” – 7 1/2"||1 1/4"|
|B16.5 Class 150 FF/ Full Face Gaskets||B16.5 Class 150 RF/ Ring Gaskets|
|Torque / Round (ft-lbs)||Stud Bolts Tighten Sequence||inconel 625 Torque / Round (ft-lbs)||Stud Bolts Tighten Sequence|
|2nd||1st||Final||Bolt Size||Dwg*/No.||2nd||1st||Final||Bolt Size||Dwg/No.|