Knowledge Centre
Reference articles for buyers, sellers and engineers who need to know exactly what a piece of metal is before they price it. 47 articles, 21 comparisons and a full standards reference.
The knowledge centre explains how to identify, grade, prepare, value, import and export nickel alloy, superalloy, cobalt, titanium and tungsten scrap. Articles are written for sellers and buyers in India and abroad, and each one links to the grade pages and standards it draws on.
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How to Sell Inconel Scrap: Grades, Preparation, Proof and What a Buyer Needs
Sell Inconel scrap as the grade it is: how to separate 600, 625, 718 and other grades, prepare each form, prove the chemistry and brief an Inconel scrap buyer.
Nickel Alloy Scrap Price per Kg: What Decides the Rate
Nickel alloy scrap price per kg explained without a rate card: contained metal, payables, grade proof, form, cleanliness, lot size and terms behind every offer.
Turbine Blade Scrap: Sorting and Selling Aero and IGT Blades, Vanes and Nozzles
Turbine blade scrap explained: the superalloys aero and IGT blades, vanes and nozzles are cast from, how coatings and repairs affect a lot, and how to sell it.
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Nickel Alloy Scrap Grades: Common Grades and What Drives Their Value
Common nickel alloy scrap grades, from Inconel 625 and 718 to Hastelloy C-276 and Monel 400, with UNS numbers, key chemistry and what drives their scrap value.
Aerospace and Chemical Plant Nickel Alloy Scrap: Grades by Equipment, Release, Cleaning and Traceability
Aerospace and chemical plant nickel alloy scrap: which grades come from which equipment, how each stream is released, cleaned, traced and described for sale.
How to Import Metal Scrap into India: PSIC, HS Codes and the Document Flow
How to import metal scrap into India: HS 7503 and 7204 headings, the pre-shipment inspection certificate, radiation checks and the document flow, step by step.
How to Sell Inconel Scrap: Grades, Preparation, Proof and What a Buyer Needs
Sell Inconel scrap as the grade it is: how to separate 600, 625, 718 and other grades, prepare each form, prove the chemistry and brief an Inconel scrap buyer.
Turbine Blade Scrap: Sorting and Selling Aero and IGT Blades, Vanes and Nozzles
Turbine blade scrap explained: the superalloys aero and IGT blades, vanes and nozzles are cast from, how coatings and repairs affect a lot, and how to sell it.
Selling Hastelloy Scrap: How to Sort, Prove and Prepare C-276, C-22, B-2 and X
Selling Hastelloy scrap? Learn how C-276, C-22, B-2 and X are told apart on XRF, why clad and lined plate is declared, and what to send for a firm offer.
Buying from a Nickel Alloy Scrap Supplier in India: A Guide for Overseas Buyers
Sourcing from a nickel alloy scrap supplier in India? Grades on offer, lot preparation, Incoterms, pre-shipment inspection and the documents to ask for.
Monel Scrap: 400 vs K-500, How to Identify It and How to Sell It
Monel scrap explained: how Monel 400, K-500 and R-405 differ, why a magnet misleads, how to keep it apart from cupronickel, and what to send a buyer.
Titanium Scrap: How Grade 2 and Grade 5 Solids and Turnings Are Sold
Titanium scrap for sellers: how Grade 2 and Grade 5 (Ti-6Al-4V) are told apart, what buyers check in solids and turnings, and how to store chips safely.
How to Choose a Nickel Alloy Scrap Buyer: A 7-Point Checklist
Choosing a nickel alloy scrap buyer: a 7-point checklist on grade-wise quotes, testing, weighing, written terms, payment, logistics and warning signs.
Duplex Stainless Steel Scrap: Identifying and Selling 2205, 2507 and S32760
Duplex stainless steel scrap should be sold as identified 2205, 2507 or S32760.
How to Identify Inconel Scrap: Is It Inconel, Stainless or Something Else?
How to identify Inconel in scrap: what the magnet, markings, weight and sparks can and cannot tell you, Inconel vs stainless on XRF, and how to name the grade.
XRF Nickel Alloy Identification: How Handheld XRF Sorts Scrap by Grade
XRF nickel alloy identification explained: how a handheld analyser reads Inconel, Hastelloy and Monel scrap, which grades it confuses and how to trust a result.
XRF vs OES vs Lab Analysis: Choosing a Test for Nickel Alloy Scrap
XRF vs OES for nickel alloy scrap: what each method measures, where carbon and aluminium change the choice, and when ICP-OES or combustion lab tests are needed.
Positive Material Identification (PMI) for Nickel Alloy Scrap Lots
Positive material identification for scrap lots: how PMI works, how many pieces to test, what a PMI report must record and how it settles grade disputes.
How to Read an EN 10204 3.1 Certificate for Nickel Alloy Scrap
How to read an EN 10204 3.1 certificate for nickel alloys: heat numbers, chemistry checks, warning signs and what a mill certificate proves about scrap.
Nickel Alloy Scrap Price per Kg: What Decides the Rate
Nickel alloy scrap price per kg explained without a rate card: contained metal, payables, grade proof, form, cleanliness, lot size and terms behind every offer.
Nickel Alloy Turnings vs Solids: Why Form Changes the Scrap Value
Why nickel alloy turnings are valued below solids of the same grade, and how binning, crushing, drying and sampling close the gap.
Which Superalloy Is in Which Turbine Part? A Scrap Seller's Map
Fan to exhaust: the titanium, disc, combustor, blade and vane alloys in a gas turbine, and how to sort overhaul scrap.
René, MAR-M, GTD or IN-738? How to Identify Cast Superalloy Scrap
The hafnium, tantalum, rhenium, cobalt and titanium markers that separate René, MAR-M, GTD and IN-738 blades and revert.
Plant Shutdown Scrap in India: Sorting Hastelloy, Inconel and Titanium
Reactors, exchangers, scrubbers and piping: which alloy sits where, clad and lined equipment, and how to sell a shutdown lot.
Ni-Resist vs Cast Iron vs Stainless: Sorting Pump and Valve Scrap
Magnet first, then a reading: telling Ni-Resist Type 1, 2 and 5 from grey iron, cast stainless and bronze.
Segregating Nickel Alloy Turnings in Mumbai Machine Shops
Bins per grade at the machine, what to keep out of a turnings drum, monsoon storage and the proof a buyer asks for.
Cobalt Alloy Scrap in India: Stellite, Haynes 25 and Haynes 188
How Indian sellers separate Stellite hardfacing scrap from Haynes 25 and 188 wrought cobalt lots.
Haynes Scrap in India: Grades 230, 282 and 214
Nickel-base Haynes 230, 282 and 214 versus cobalt Haynes 25/188, with furnace and turbine lot tips.
How to Identify Hastelloy Scrap Before You Sell
Shop-floor fingerprints for B-2, C-276, C-22 and X, plus clad-plate checks for Indian plant lots.
Cobalt vs Nickel Alloy Scrap for Indian Yards
How yards separate Stellite and Haynes 188 from Inconel and Hastelloy before offering lots in India.
Scrap Export Documents: What to Prepare Before Alloy Scrap Ships
Scrap export documents for nickel alloy, stainless, titanium and carbide scrap: HS codes, invoice and packing list, radiation certificates, PSIC and VGM.
UNS Number Explained: How the Unified Numbering System Names an Alloy
What a UNS number is, what the letter prefixes mean, how nickel alloy and stainless numbers are built, and how to use UNS numbers to describe scrap clearly.
Gamma Prime (γ′): How It Keeps Nickel Superalloys Strong When Hot
Gamma prime (γ′) explained: how Ni₃(Al,Ti) strengthens nickel superalloys, which grades rely on it, how heat treatment changes it, and why it matters for scrap.
René Alloys Explained: Grades, Grain Structure and Composition
René 41 to René N6 compared: wrought, equiaxed, directionally solidified and single-crystal grades, rhenium content and how scrap is sorted.
Superalloy Revert: How Cast Superalloy Scrap Returns to the Melt
Superalloy revert explained: foundry and service revert, how melters remelt it into master alloy, and what keeps superalloy scrap recycling closed-loop.
Tramp Elements in Nickel Alloys: Why Traces Matter in Remelting
Tramp elements in nickel alloys: how lead, bismuth, selenium, sulfur and tin harm remelted alloys, where they enter scrap and how sellers keep them out.
Magnet Test for Stainless Steel and Nickel Alloys: What It Sorts and What It Cannot
The magnet test for stainless steel and nickel alloys: is Inconel magnetic, why duplex and some stainless pull, and how to use a magnet to sort scrap.
How to Choose a Nickel Alloy Scrap Supplier: A Buyer’s Checklist and the Questions to Ask
How to choose a nickel alloy scrap supplier: a buyer’s checklist, the questions to ask, what “certified” really means and warning signs, for India and abroad.
Ferro Alloy Scrap: What It Is, How Its Value Is Set and Why Recycling It Matters
Ferro alloy scrap explained: off-grade, fines and remnants, how contained metal, analysis, size and moisture set its value, and why recycling it matters.
Uses of Ferro Tungsten: Grades, Scrap and How It Differs from Tungsten Carbide
Uses of ferro tungsten in high-speed and tool steels, its ISO 5450 grades, how ferro tungsten scrap is traded and how it differs from pure tungsten and carbide.
Ferro Vanadium Scrap: FeV 80 and Other Grades, Uses and How Lots Are Traded
Ferro vanadium scrap explained: FeV 80, FeV 50 and FeV 40 grades, how each is made, what ferro vanadium is used for and what sets the value of an off-grade lot.
Hastelloy Scrap Grades and Uses: B-2, C-276, C-22 and X Explained
Hastelloy scrap grades and uses: compositions of B-2, C-276, C-22 and X, what each alloy does in service, where its scrap comes from and why grades stay apart.
What Is Misch Metal? Composition, Uses and How Misch Metal Scrap Is Traded
What is misch metal? Its rare-earth composition, how it is made, its uses in steel, flints, magnesium and battery alloys, and how misch metal scrap is handled.
Nickel Alloy Grades and Applications: A Reference by Alloy Family
Nickel alloy grades and applications in one reference: types of nickel alloys, every Inconel, Hastelloy, Monel and superalloy grade with UNS and typical uses.
Uses of Nickel Alloy Scrap: Where Recycled Nickel Alloys Go and Why Sorting Decides It
Uses of nickel alloy scrap explained: remelting into new superalloys, stainless and alloy steelmaking, foundries and refining, and why sorted scrap earns more.
Nickel Alloy Scrap Recycling Mistakes: 10 to Avoid, with the Fix for Each
Ten nickel alloy scrap recycling mistakes, from mixed grades and oily turnings to missing documents and radiation checks, with the cost of each and the fix.
254 SMO Scrap: Composition, Uses, Look-Alikes and How It Is Traded
254 SMO scrap explained: the 6Mo super-austenitic grade S31254, where its scrap comes from, how to tell it from 904L and duplex, and how 20Mo-4 relates.
Tungsten Carbide Scrap: Hard and Soft Scrap Types, Cobalt Binder and Recycling Routes
Tungsten carbide scrap explained: hard and soft scrap types, the cobalt binder, zinc and chemical recycling, and what sets the carbide scrap price per kg.
Types of Ferro Alloys: What Each One Is and What It Is Used For
Types of ferro alloys explained: ferro chrome, tungsten, niobium, vanadium and molybdenum, with ISO grade ranges, uses in steel and how scrap lots are traded.
What Is Inconel Scrap? Grades, Composition, Uses and Price Drivers
Inconel scrap explained: how grades 600 to 718 and IN-939 differ by UNS number and chemistry, where the scrap comes from and what sets its price per kg.
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Grade Comparisons
ASTM, ASME, AMS and EN, Grade by Grade
Which specification covers which grade and product form, how to read a mill marking, and the testing standards behind PMI.
FAQ
What does the knowledge centre cover?
Identification (XRF, OES, PMI, magnet test, mill certificates), value and trade (pricing factors, solids vs turnings, export documents), metallurgy, recycling and reference topics such as UNS numbers.
Who publishes these articles?
The articles are published by Mipra Steel. Each one states when it was last updated and links to the grade, standards and comparison pages it relies on.
Do these articles give scrap prices?
No. Articles explain what decides the value of a lot, but offers are made lot by lot and dated, so no prices are published.
Where can I find short answers?
The questions and answers page collects over 200 short answers, each linked to the page it comes from.
Published by Mipra Steel, Khetwadi, Mumbai · Last updated
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