Hot Products

The main products include rare earth magnesium ferrosilicon alloy (spheroidizing agent), nucleating agent, pipe powder, ferrosilicon (particles), (high, medium and low) carbon manganese, (high, medium, low and micro) ferrochromium, alloy cored wire, silicon carbide, silicon nitride, slag onglomeration agent, desulfurizer, and carburant, as well as other customized alloy products.

Ferrosilicon

It is an essential deoxidizer in the steelmaking industry. In the steelmaking industry, ferrosilicon is used for precipitation deoxidation and diffusion deoxidation. It is also used as an alloying agent in steelmaking.

Rare Earth Magnesium Ferrosilicon Alloy

Rare earth magnesium ferrosilicon alloy, made of ferrosilicon, calcium, magnesium, rare earth and other materials by melting, is a spheroidizing agent with a strong deoxidation and desulfurization effect.

Silicon barium calcium inoculant

Enhance the graphitization, greatly increase the amount of graphite nodules formed, refine the crystal particles, and improve the roundness of graphite nodules in the ductile iron.

Pipe powder

Pipe powder is a ferrosilicon-based composite material with strictly controlled alloy elements and particle size. It can effectively reduce the degree of supercooling, inhibit the formation of carbide, slow down the decay time, and has a slight sensitivity to the casting size, showing a consistent nucleation effect.

Ferromanganese

Ferromanganese is an alloy composed of iron and manganese, which is an important auxiliary material for cast iron and steelmaking.

Ferrochrome

Ferrochrome is an iron alloy composed of chromium and iron. It is an important alloying additive for steelmaking. According to different carbon content, ferrochrome can be divided into high-carbon ferrochrome (4-8% carbon content).

Alloy Cored Wire

It helps adjust and control the content of easily oxidized elements and trace elements, and can greatly increase the alloy yield, reduce smelting costs, shorten smelting time, and accurately control the composition.

Silicon Nitride

The product applies to the smelting of stainless steel, special alloy steel, and special refractory materials in the national defense industry, electronics industry, and other smelting and casting industries.

Silicon Nitride Manganese

The product applies to the smelting of stainless steel and special alloy steel, as well as other smelting and casting industries.

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01
1990

Founded in the 1990s
02
12000

Company covers an area of 12,000 square meters
03
5000

Including a building area of 5,000 square meters
04
20+

The company has over 20 categories of products

Henan Longchuang Metallurgical Materials Co., Ltd

Henan Longchuang Metallurgical Materials Co., Ltd. is a metallurgical materials factory integrating production, testing, and sales, serving steel smelting enterprises and foundries. Here you're not just buying alloys, but a complete supply solution: over 20 standard products, including Rare Earth Magnesium Ferrosilicon Alloy, Nodulycer, inoculants, ferrosilicon, Electrolytic Manganese flake, etc., custom development to your specifications, and factory-direct pricing.

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Silicon-Carbon Alloy

Product Overview:

Silicon-carbon alloy is a silicon- and carbon-enriching material developed specifically for the ladle alloying stage. It is used to fine-tune the composition of molten steel, primarily addressing the issues of low absorption rates and poor reproducibility associated with conventional recarburizers when used in over-oxidized molten steel.
Issues with conventional recarburizers: Metallurgical and steel enterprises often employ ladle alloying to fine-tune steel composition during the smelting process. When molten steel is in an over-oxidized state, conventional recarburizers—due to their low density—tend to float on the surface; this results in low carbon absorption rates and poor reproducibility, thereby reducing the accuracy of hitting target carbon levels. Furthermore, because they fail to sink into the melt, the reaction interface is limited to the upper layer or surface of the steel, significantly lowering the carbon recovery rate.
Carbon-cored wire offers a solution but comes at a high cost: Some steelmakers use carbon-cored wire to mitigate these issues; however, this requires investment in specialized wire-feeding equipment, increases production costs, and complicates operational procedures.
The silicon-carbon alloy approach: This product is manufactured from high-purity carbon powder, silicon carbide powder, metallic silicon powder, and low-sulfur/low-nitrogen carbonaceous materials. It features high density and can be processed into spheres or powder according to customer specifications. It is added directly to the ladle during use, requiring no additional equipment.

Ferrosilicon

Application:: Ferrosilicon is widely used in the production in steelmaking, casting and other industries.
Introduction:: It is an essential deoxidizer in the steelmaking industry. In the steelmaking industry, ferrosilicon is used for precipitation deoxidation and diffusion deoxidation. It is also used as an alloying agent in steelmaking.It is also used as an alloying agent in steelmaking. The addition of a certain amount of silicon can significantly improve the intensity, hardness and elasticity of steel, improve the permeability of steel, and reduce the magnetic hysteresis loss of transformer steel.

Rare Earth Magnesium Ferrosilicon Alloy

Application:: The products containing 4%, 5% or 5.5% magnesium belong to low magnesium spheroidizing agent, whose RE content is 1%-2%, mostly melted in the intermediate frequency furnace and and used for spheroidization of low sulfur liquid iron. It reflects a mild spheroidizing reaction and the spheroidizing elements are easy to absorb. The products containing 6% or 7% magnesium belong to medium magnesium spheroidizing agent, which is generally melted in the cupola furnace combined with electric furnace, or melted in the intermediate frequency furnace for the production of pearlite heat-resisting steel.
Introduction:: Characteristics: Strong spheroidizing ability, stable composition, stable reaction, and no decay.The product can be used as spheroidizing agent and nucleating agent.

Silicon barium calcium inoculant

Usage:: Place the nucleating agent on top of the spheroidizing agent in the hot metal ladle,Pour into the hot metal ladle with the liquid iron during the tapping, and pour during the ladle shift,Metal-stream nucleation (the metal-stream nucleation effect is the best for 0.2-0.7mm specification).
Introduction:: Enhance the graphitization, greatly increase the amount of graphite nodules formed, refine the crystal particles, and improve the roundness of graphite nodules in the ductile iron.

Pipe powder

Application:: It refers to the silicon barium alloy grinding powder used in the pipe mold, showing a sound effect on the surface treatment of castings.
Introduction:: Pipe powder is a ferrosilicon-based composite material with strictly controlled alloy elements and particle size. It can effectively reduce the degree of supercooling, inhibit the formation of carbide, slow down the decay time, and has a slight sensitivity to the casting size, showing a consistent nucleation effect.

Ferromanganese

Application:: It has been widely used in structural steel, tool steel, stainless heat-resistant steel, wear-resistant steel and other alloy steels. Manganese also desulfurizes and reduces the harmful effects of sulfur.
Introduction:: Ferromanganese is an alloy composed of iron and manganese, which is an important auxiliary material for cast iron and steelmaking. The fracture is dark gray with a blue-yellow flashing color (due to the existence of hard and brittle Mn3C in manganese), so it is hard and brittle.

Ferrochrome

Introduction:: Ferrochrome is an iron alloy composed of chromium and iron. It is an important alloying additive for steelmaking. According to different carbon content, ferrochrome can be divided into high-carbon ferrochrome (4-8% carbon content), medium-carbon ferrochrome (0.5-4% carbon content), low-carbon ferrochrome (0.15-0.50% carbon content), Micro-carbon ferrochrome (containing 0.06% carbon), ultra-micro-carbon ferrochrome (containing less than 0.03% carbon), and silicon-chromium alloy, ferrochromium nitride, etc.

Alloy Cored Wire

Application:: When used in steel making, it can purify the form of steel inclusions, improve the castability of molten steel, improve the performance of steel, significantly increase the yield of alloys, reduce alloy consumption, and reduce steelmaking costs, with significant economic benefits.
Introduction:: It helps adjust and control the content of easily oxidized elements and trace elements, and can greatly increase the alloy yield, reduce smelting costs, shorten smelting time, and accurately control the composition.

NEWS CENTER

The latest information on the global ferroalloy market

HC vs MC vs LC Ferromanganese: How Each Carbon Step Changes Your Cost Structure

The most common sentence in ferromanganese grade selection is “let’s go with the low-carbon grade, it’s safer.” It sounds prudent. In practice it is one of the easiest ways to overspend — you pay for low carbon you don’t need, and the money does not show up anywhere on a purchasing report. The reason is structural. High-carbon FeMn (around 6–8% C), medium-carbon FeMn (around 1.0–2.0% C) and low-carbon FeMn (around 0.2–0.7% C) are not three price points on one line. Each step down in carbon is one extra production step. One more step means one more melt, one more block of electricity, and more manganese lost to slag. That is why the gaps between grades are stepwise rather than linear, and why they get steeper as you go down. But price is not the real issue. The real issue is that most buyers do not calculate which grade they actually need. This article gives two methods you can use today: a carbon headroom formula that tells you how much carbon your grade can accept, and a per-tonne-of-manganese comparison that stops “price per tonne of alloy” from misleading you. 1. The short answer: you are not buying less carbon, you are buying an extra process...

2026/09/15

FeSi 75 vs FeSi 45: Which One for Steelmaking, Which One for Foundry (A 5-Step Method)

To put the same 100 tonnes of silicon into a furnace, FeSi75 means shipping 133 t and FeSi45 means shipping 222 t. Those extra 89 tonnes have to be paid for as freight, given warehouse space, and heated to molten-metal temperature — or, in an electric arc furnace, they become iron you were going to buy anyway. Here is the answer up front: there is no better grade, only a better calculation. Do not ask which is better; ask what you are measuring against. The order is fixed: work out how much silicon you actually need → look at which process step you add it in → check the impurity budget → compare price per tonne of silicon rather than per tonne of alloy → then add freight, temperature loss and storage. Five steps, and the answer comes out on its own — and it regularly comes out differently for different plants. The most common mistake in this business is treating the two grades as high-spec and low-spec versions of the same product. They are not. Their impurity profiles differ, the process steps they suit differ, and their sensitivity to addition method differs. 1. The short version: this is a question of basis, not of...

2026/09/14

Inoculant vs Nodularizer: The Difference, the Right Order, and Four Common Mistakes (2026)

Castings come out of the mould hard and brittle, and the microstructure is full of cementite. So which one is at fault — the nodularizer or the inoculant? The answer compresses into a single line, and everything else is elaboration: The nodularizer decides what shape graphite grows into. The inoculant decides how many nodules form. Those sound like the same question. They are two independent variables in how graphite grows, and a great deal of process troubleshooting goes in circles precisely because “wrong shape” and “not enough of them” get treated as one problem. Below: the full dimensional comparison first, then why the order cannot be reversed or skipped, and finally a table that lets you look at a micrograph and know where to investigate. 1. The one-line answer: shape and count An analogy helps. Picture graphite nodules as buildings: The nodularizer governs what each building looks like— domed or flat-topped. It determines which direction carbon grows as it precipitates, so that graphite forms spheres instead of flakes. Get the shape wrong and mechanical properties fall off a cliff, because the tip of a graphite flake is a ready-made crack starter. The inoculant governs how many buildings the city gets—...

2026/09/14

How to Choose the Right Mg Content for Your Nodularizer (2026)

“The higher the Mg content, the better the nodularization” — that sentence has cost foundries money and destabilised their processes. A more accurate statement is this: Mg content is not a multiple-choice question, it is an arithmetic one. The percentage printed on the bag is what you pay for. What actually determines whether graphite grows as nodules is the 0.03%–0.05% of magnesium still sitting in the iron once treatment is finished. Between those two numbers sit three separate losses and one recovery rate. Which is why the same FeSiMg8RE3 runs at a 1.4% addition rate in Foundry A and needs 1.9% in Foundry B. The material did not change; the process did. The reverse holds too: if improving your process lifts recovery, moving to a lower Mg grade may well cost you less overall. What follows takes that calculation apart, far enough that you can apply it directly. 1. Where the magnesium actually goes Once the nodularizer goes into the melt, only part of its magnesium stays behind to do any work. There are three destinations: ① Desulphurization. Magnesium reacts with sulphur to form MgS, which floats off into the slag. This is unavoidable cost — the higher the sulphur in the base iron,...

2026/09/11