High Performance Steel Alloys
18Ni300 is a high-strength, heat-treatable iron-based alloy engineered for extreme performance in mold making, automotive tooling, and structural components.
18Ni300 is a premier maraging steel that combines extreme tensile strength and fracture toughness with excellent dimensional stability during heat treatment.
Manufactured using 100% virgin raw materials and strict VIM protocols to produce clean, reliable, and ready-to-use ingots.
Alloy chemistry and ingot specifications are finalized as per application requirements.
As per customer requirement mould design carried out and planned for charge preparation, charge sequences in VIM furnace. Careful selection of raw materials are the prime factor to achieve specified chemistry of an alloy.
Virgin elements are charged into the VIM furnace either in air or under vacuum, with precise adjustments made for trace element additions during melting.
The melt is poured under vacuum into precision-engineered molds using an automatic tilting mechanism for defect-free solidification.
Post-casting processes include surface treatment, cropping, and preparation of ingots for downstream processing.
Every batch is tested for chemical composition by Spark- OES / wet analysis / Gas analysis, and physical compliance as per customer specification before secure packaging.
Chemical Composition (Wt%)
| Element | Min (Wt%) | Max (Wt%) |
|---|---|---|
| Carbon | 0.00 | 0.03 |
| Silicon | 0.00 | 0.10 |
| Manganese | 0.00 | 0.10 |
| Phosphorous | 0.00 | 0.010 |
| Sulphur | 0.00 | 0.010 |
| Nickel | 18.00 | 19.00 |
| Chromium | 0.00 | 0.50 |
| Titanium | 0.65 | 0.80 |
| Molybdenum | 4.60 | 5.20 |
| Aluminium | 0.08 | 0.18 |
| Cobalt | 8.50 | 9.50 |
| Copper | 0.00 | 0.50 |
| Calcium | 0.00 | 0.05 |
| Boron | 0.00 | 0.003 |
| Zirconium | 0.00 | 0.02 |
| Fe | Remainder | |
| Element | Composition (PPM) |
|---|---|
| O | <25 |
| N | <50 |
| H | <3 |
18Ni300 alloy provides exceptional strength and hardness after age hardening, with easy machinability in the solution-annealed state.
| Alloy | Mechanical properties* | PML alloy: as cast* | After Heat treatment* |
|---|---|---|---|
| PML 18Ni300 *Typical | Rockwell Hardness (HRC) | 31 HRC | |
| Tensile Strength Ultimate (UTS) | 1176MPa | ||
| Tensile Strength Yield (YS) | - | ||
| Young’s Modulus (E) | - | ||
| Elongation Break | - | ||
| Reduction of Area | - |
Consistent production of high-quality ingots, optimized for mold and tool steel applications.
Engineered to meet demanding specs with consistent quality and adaptable performance.
| Input : Batch size | Output | Alloying Elements | Chemistry tolerance | Impurities Max |
|---|---|---|---|---|
| 30 kgs to 600 Kgs | Ingot of required shape as per customers requirement | Ti, Mo, Al, Co, Ni | +/- 0.5 % for Higher level % (Above 2 digit) and +/- 0.3 % for lower level % (Single digit) | Oxygen < 25ppm Hydrogen < 3ppm Nitrogen < 50ppm All other impurities < 50 ppm |
18Ni300 is a high-performance maraging steel known for its exceptional tensile strength, fracture toughness, and superior dimensional stability during heat treatment.
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With over six decades of expertise, PML delivers high-performance component technologies and precision solutions trusted across critical industries.
ISO 45001
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International Standard for Automotive Management Systems
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