Nickle Alloy Flat Welding Flange Hastelloy C4 Catalytic Support System

Nickle Alloy Flange, also known as a flange rim or flange, is a part that connects pipes to each other at the ends, and it is also used on equipment inlets and outlets for connecting two pieces of equipment, such as a reducer flange. A flange connection or flange joint refers to a detachable connection consisting of a flange, gasket, and bolt, which together form a combined sealing structure.

Welding Process:

• Required Equipment: A set of manual arc welding equipment, one handle-type angle grinder, one electric air hammer, and one straight edge.
• Folding Welding Preparation: 1. Check and adjust the equipment to ensure normal operation; 2. Prepare φ4.0 J402 welding rods, which are preferably dried at 300°C - 350°C for one hour.
• Folding Welding Process: 1. Assemble the cone and the large flange according to the drawing requirements, then divide the large flange into 8 equal parts; 2. Welding due to the thicker flange and larger groove, the use of segmental symmetrical, multi-layer welding is adopted.
• Folding Welding Quality Requirements: The weld strength must at least match the strength of the base material. The weld surface should be flat and smooth, without defects such as burn-through, porosity, welding leaks, slag inclusion, undercutting, or incomplete welding. The weld reinforcement height should be less than 2mm.
• Folding Notes for Attention: 1. When welding the base layer, always use J506 welding rod manual surfacing and welding with a small current. Strictly follow the welding process; 2: After welding each position, use a level to check the deformation of the flange plane; 3: While welding, use the air hammer to strike the weld to eliminate stress.

Hastelloy C4:

This Nickel-Chromium-Molybdenum alloy tolerates high temperatures and gives a designfreedom in areas where weld geometry makes excessive heat buid-up unavoidable. Resistance to general and localised corrosion and stress corrosion cracking is generaly similar to Hasteloy C-276.With its high contents of Chromium and Molybdenum Hastelloy C-4 is able to withstand both
oxidizing and non-oxidizing acids, and is resistant to pitting and crevice attacks in thepresence of chlorides and other halides. Like
other nickel alloys, Hastelloy C-4 is ductile, easy to form and weld. Hastelloy C-4 is also known as Nicrofer 6616.

Key Features

Hastelloy C-4 offers the following key features: Excelent resistance to stress-corrosioncracking and to oxidizing atmospheres at hightemperature. xceptiona resistance to a wide variety of chemical process environments including, hotcontaminated minera acids,so vents,chorineformic and acetic acids,and salt waters.

Designations

W.NR 2.4610
UNS NO6455
AWS 052

Specifications

ASTM B574

ASTM B619

Chemical Composition:

Designantion and standards:

The typical mechanical properties of HastelloyC-4:

Processing Flow Chart:

Hunan Dinghan New Material Technology Co.,Ltd. (DINGSCO) specialized in Nickel Based Corrosion Resistant and High Temperature alloys products which used in the world’s most technically demanding industries and applications.

We have complete advanced technology facilities to produce best quality alloys to meet exacting your specifications such as VIM (Vacuum lnduction Melting) furnace to provide high purity Alloys,ESR (Electro Slag Re-melting) furnace to enhances the structure and purity of the Alloys, and CNC machining equipments (Lathe, Wire cutting, Drilling,Milling) to provide high precision finished products.

We are dedicated to providing our customers with best quality products,fastest possible deliveries, most competitive prices of Nickel Based Corrosion Resistant and High Temperature alloys in bars,rods,forged flanges, valve parts, forged shapes (shafts, discs, blocks, hubs,rings, cylinders and tailor shapes) according to ASTM,ASME,API,AMS, NACE and other industry standards.

We can help you gain a competitive edge in the market by responding to a rush quote in less than 24 hours and even complex requests for price and delivery quotations are responded to within 48 hours.