Special Alloys Scrap Buyer Singapore

Molten Steel buys special-alloys scrap in Singapore — nickel-based superalloys (INCOLOY 625, 718, 825, 925), copper-nickel alloys (90/10, 70/30), and duplex / super-duplex stainless steels. These materials carry a significant premium over standard 304/316 stainless because of their nickel, chromium, molybdenum, and niobium content — in some cases 3–6× the per-kilogram value of a regular stainless load.

We do not publish a per-kilogram rate sheet for special alloys. Pricing depends on grade verification (XRF on receipt), recoverable element content, mill paperwork where available, current LME-plus-premium benchmarks, and load size. Send us photos and an estimated quantity via WhatsApp or email — we quote within the hour.

Special Alloys We Buy

• INCOLOY 625 — Ni-Cr-Mo-Nb superalloy. Aerospace, marine, chemical processing, nuclear.
• INCOLOY 718 — precipitation-hardening Ni-Fe-Cr. Aerospace turbine discs, blades, fasteners; oil & gas downhole.
• INCOLOY 825 — Ni-Fe-Cr-Mo-Cu. Acid environments, sulphuric/phosphoric acid plants, sour-gas wells.
• INCOLOY 925 — age-hardenable variant of 825. Oil & gas downhole tools, marine fasteners.
• Copper-Nickel 90/10 (CuNi 90/10) — marine seawater piping, condenser tubing, naval applications.
• Copper-Nickel 70/30 (CuNi 70/30) — high-pressure marine condenser tubing, desalination, naval.
• Duplex stainless (SAF 2205, UNS S32205) — oil & gas, offshore, chemical process, structural marine.
• Super-duplex stainless (SAF 2507, Zeron 100, UNS S32750/S32760) — offshore subsea, sour-gas, desalination.
• Hastelloy / Monel / Inconel — we also accept these adjacent nickel alloys; same quote-on-photos process.

INCOLOY Scrap — 625, 718, 825, 925

INCOLOY is Special Metals Corporation’s family of nickel-iron-chromium superalloys engineered for high-temperature strength, oxidation resistance, and corrosion resistance in aggressive media. Typical scrap sources in Singapore are aerospace MRO scrap (engine sections, turbine components), oil & gas downhole tools, chemical-plant tubing and pressure vessels, marine fasteners, and project-leftover bar/tube/sheet stock from completed industrial builds.

Mill paperwork — heat numbers, certificates of conformity (3.1 / 3.2), positive material identification (PMI) reports — lifts the price meaningfully because it eliminates verification risk on our side. Even photos of the original stamping or end-of-bar markings help. We confirm with handheld X-ray fluorescence (XRF) at the point of settlement.

• 625 typically 58–63% Ni, 20–23% Cr, 8–10% Mo, 3.15–4.15% Nb. The Mo+Nb premium is substantial.
• 718 typically 50–55% Ni, 17–21% Cr, 4.75–5.5% Nb, 2.8–3.3% Mo, with Ti and Al for precipitation hardening.
• 825 typically 38–46% Ni, 19.5–23.5% Cr, 2.5–3.5% Mo, 1.5–3% Cu, balance Fe.
• 925 similar base to 825 with Ti added for age-hardening — 42–46% Ni, 19.5–22.5% Cr, 2.5–3.5% Mo, 1.5–3% Cu, 1.9–2.4% Ti.

Copper-Nickel Scrap (CuNi 90/10 and 70/30)

Copper-nickel alloys combine the corrosion resistance of nickel with the thermal conductivity and machinability of copper. The two dominant grades are 90/10 (90% Cu, 10% Ni, with small amounts of Fe and Mn) and 70/30 (70% Cu, 30% Ni). Singapore generates copper-nickel scrap mostly from marine refits — seawater piping, condenser tubing on naval and merchant vessels, heat-exchanger bundles — plus desalination-plant maintenance and the petrochemical sector.

CuNi prices off both copper and nickel benchmarks — the high copper content gives strong baseline value, and the nickel content adds a meaningful premium over standard yellow brass or stainless. Tube form is the most common scrap presentation; we accept whole bundles, cut sections, and removed condenser cores. Avoid commingling with carbon-steel headers — we will need to dismantle and discount mixed loads.

Duplex and Super-Duplex Stainless Scrap

Duplex stainless steels are dual-phase (austenite + ferrite) alloys with substantially higher chromium, molybdenum and nitrogen content than standard 304 or 316. Super-duplex grades push molybdenum higher and add tungsten and copper for the most aggressive environments — offshore subsea, sour-gas, and high-chloride desalination.

• SAF 2205 (UNS S32205) — the workhorse duplex. ~22% Cr, ~3% Mo, ~5.5% Ni, 0.14–0.20% N. Oil & gas piping, offshore structural, chemical process.
• SAF 2507 (UNS S32750) — super-duplex. ~25% Cr, ~4% Mo, ~7% Ni, 0.24–0.32% N. Offshore subsea, sour-gas, desalination.
• Zeron 100 (UNS S32760) — super-duplex with W + Cu addition. Highest-spec offshore and FPSO applications.

Duplex is often mistaken for 316 because the surface finish is similar — but the Mo + N + sometimes W content makes it 1.5–2.5× more valuable per kilogram. If you suspect duplex but cannot confirm, send photos of any stamped markings or mill paperwork. We verify with XRF before quoting firm. For context on the standard grades, see our 304 vs 316 explainer and our main stainless steel scrap page.

Industries We Buy Special-Alloy Scrap From

• Aerospace & engine MRO — turbine discs, blades, vanes, combustor liners, fasteners. INCOLOY 718 and Inconel dominate.
• Marine & shipbuilding — CuNi seawater piping, condenser tubing, propeller bushes, super-duplex offshore hardware. See our scrap propeller page and marine scrap salvage explainer.
• Oil & gas / petrochemical — downhole tools, sour-gas wellhead components, process tubing, vessel internals, valves. INCOLOY 825/925 and super-duplex are common.
• Process & chemical plants — heat-exchanger bundles, reactor internals, acid-service piping, distillation column trays. INCOLOY 625 and 825 routinely appear.
• Power generation — superheater tubing, condenser tubing, turbine fasteners. CuNi tubing especially common from condenser overhauls.
• Project leftovers / surplus stock — unused tube, bar, plate, sheet from completed projects. Sealed mill markings + paperwork attract a premium — see the surplus stock section below.

How We Verify the Alloy

1. Photos + estimated quantity via WhatsApp or email — we issue an indicative range based on what we can see (stamped grade codes, mill markings, form factor, surface finish).
2. Mill paperwork lifts the price. Heat numbers, 3.1 / 3.2 certificates, PMI reports — if you have any of these, send them. Verified provenance reduces risk on our side and we share that benefit.
3. Handheld X-ray fluorescence (XRF) on inspection — either at our 170 Gul Circle yard on delivery, or on site during pickup for larger loads. The XRF reading is shown to the seller and the quoted alloy must match for the price to hold.
4. Sample-and-test for unmarked bulk loads — for unstamped tube/bar bundles we may run multiple XRF samples or send a representative sample to a third-party lab. We discuss the verification approach up front before any material moves.
5. Settlement same-day on verified loads — bank transfer or cheque on confirmation of weight and alloy.

Surplus Stock and Project Leftovers

We are active buyers of unused special-alloy stock left over from completed projects — sealed bundles of tube, bar, plate, sheet, fittings — especially when the original mill paperwork is intact. EPC contractors, fabrication yards, and project warehouses often sit on this material long after the project completes; converting it to cash through a licensed buyer is cleaner than letting it tie up storage.

If you have project surplus you would like to clear, send a stock list (alloy / form / size / quantity) plus photos of the original mill markings. We can quote on documentation alone for sealed lots, with final verification on collection. Confidentiality is straightforward — we do not publish client names or project references.

Logistics — Delivery, Bins, 40-Footer, Low-Bed

Most special-alloy loads come to us by direct delivery to 170 Gul Circle — that is the fastest route to a verified quote and same-day payment. For larger, ongoing, or oversized loads we offer:

• Walk-ins accepted at our Gul Circle yard during business hours (Mon–Sat 8:30am–6:30pm, Sun 8:30am–3:30pm). Bring photos and any paperwork.
• Free scrap bins on site for ongoing producers — refineries, plants, fabrication yards generating special-alloy offcuts on a regular cadence.
• 40-footer trailer for long stock — tube, bar, profile material that exceeds standard truck-bed length.
• Low-bed trailer for oversized cargoes — vessel internals, large heat-exchanger bundles, complete distillation column sections.
• Coordinated removal from offshore, shipyard, or process-plant sites — we work with your contractor’s lifting and transport scope.

We do not run on-site removal crews ourselves — supplier delivers, or you arrange the lift, and we provide the receiving infrastructure. This is how we keep our per-kilogram quotes higher than dealers who bundle removal labour into the price.

Frequently Asked Questions

What is the price of INCOLOY 625 scrap in Singapore?

We do not publish a public per-kg rate for INCOLOY 625 because pricing depends on grade verification (XRF or mill paperwork), market benchmarks at the time of sale, and load size. Send photos and an estimated quantity via WhatsApp +65 9106 7577 or email contact@moltensteel.com.sg and we will quote within the hour. Indicatively, INCOLOY 625 trades at a meaningful premium over standard 316 stainless because of its high Ni/Mo/Nb content.

Do you buy small lots of special-alloy scrap?

Yes — from a single offcut up to multi-tonne project surplus. There is no minimum lot size. For very small lots (under 5 kg) walk-ins to our Gul Circle yard are usually quickest.

How do you verify the alloy?

We use a handheld X-ray fluorescence (XRF) spectrometer at the point of settlement — the reading is shown to the seller and the rate follows the verified alloy. Mill paperwork (heat numbers, 3.1 / 3.2 certificates, PMI reports) reduces verification risk and lifts the price. For unstamped bulk loads we may run multiple XRF samples or send a representative sample to a third-party lab.

What’s the difference between INCOLOY and stainless steel?

INCOLOY is a family of nickel-based superalloys with much higher Ni/Cr/Mo/Nb content than standard stainless. INCOLOY 625, for example, is roughly 60% nickel; standard 316 stainless is around 10–14% nickel. The higher alloying content makes INCOLOY worth several times more per kilogram than 316 — which is why correctly identifying the alloy is the single biggest factor in the price you receive.

Do you buy unused / surplus / project-leftover alloy stock?

Yes — sealed bundles of unused tube, bar, plate, sheet, fittings with mill paperwork intact attract a premium over recovered scrap. Send a stock list (alloy / form / size / quantity) plus photos of the original mill markings. We can quote on documentation alone for sealed lots, with final verification on collection.

Can you collect from offshore, shipyards, or process plants?

Yes — we coordinate with your contractor’s lifting and transport scope. For very large loads (vessel internals, complete heat-exchanger bundles, distillation column sections) we deploy a low-bed trailer; for long stock we use a 40-footer. We do not run on-site removal crews — the supplier or contractor handles the lift, and we provide the receiving infrastructure.

Why don’t you publish a public rate sheet for special alloys?

Two reasons. First, special-alloy pricing depends on grade verification, recoverable element content, current LME-plus-premium benchmarks, and load size — a generic per-kg rate would be wrong for most loads, in either direction. Second, mill paperwork and project context can shift the rate by 15–25%, so individual quoting captures more value for the seller. Send photos and quantity — we quote within the hour.

Do you accept Hastelloy, Monel, or Inconel as well?

Yes — the same photos-and-quantity process applies. Hastelloy C-276, C-22, B-3; Monel 400, K-500; Inconel 600, 601, 617, 625, 718; Nimonic and Waspaloy — all routinely traded. Mill markings and paperwork carry through to the price the same way as INCOLOY.