Piastre Ar400
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AR400 E NM400 Sono functionally equivalent, offrendo eccellente resistenza all'abrasione, durezza, e tenacità.
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The price difference is mainly influenced by origin, brand, alloy content, processing, and market conditions.
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For industrial users seeking cost-effective solutions without compromising performance, NM400 is an excellent alternative to AR400.
- Descrizione
AR400 plates are high-hardness, acciaio resistente all'abrasione ampiamente utilizzato in minerario, costruzione, cemento, e macchinari pesanti industrie.
In Cina, the closest equivalent is NM400, which is produced according to GB/T. 24186 standard.
While both grades serve similar purposes, there are subtle differences in composition, proprietà meccaniche, and market factors, which also affect their price.
1. Confronto della composizione chimica
| Grado | C (%) | Mn (%) | Cr (%) | Mo (%) | Other Elements |
|---|---|---|---|---|---|
| AR400 | 0.20–0,25 | 1.2–1,5 | 0.8–1.2 | 0.2–0,3 | Ni ~0.3 |
| NM400 | 0.18–0.22 | 1.2–1,5 | 0.8–1.1 | 0.15–0,25 | — |
Observations:
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Both grades are carbon-manganese-chromium steels.
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AR400 may include slightly higher alloy content and nickel for imported quality standards.
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NM400 meets GB/T. 24186 specifiche, ensuring similar wear resistance and hardness.
2. Confronto delle proprietà meccaniche
| Grado | Durezza (HB) | Resistenza alla trazione (MPa) | Forza di snervamento (MPa) | Resistenza all'impatto (J) |
|---|---|---|---|---|
| AR400 | 400 ± 20 | 850–950 | 550–700 | 25–35 |
| NM400 | 400 ± 20 | 850–950 | 550–700 | 25–35 |
Punti chiave:
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Durezza, resistenza alla trazione, and yield strength are very similar.
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Both are suitable for abrasive, applicazioni industriali ad alta usura.
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Differences mainly stem from brand, origin, and production control standards.
3. Factors Affecting Price
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Origin and Brand Premium
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Imported AR400 plates often cost more due to shipping, certification, and brand reputation.
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NM400, produced in China, is more cost-effective.
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Raw Material and Alloy Content
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Higher alloy content (Cr, In, Mo) increases the price.
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AR400 may have slightly higher alloy content, contributing to higher cost.
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Processing and Supply
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Taglio, saldatura, and heat treatment add costs.
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Large thicknesses and custom sizes can increase pricing.
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Market Demand and Steel Prices
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Prices fluctuate with global steel market conditions E raw material costs.
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4. Applicazioni
| Industria | Componenti tipici |
|---|---|
| Estrazione & Estrazione | Fodere del frantoio, fodera per secchi, tramogge |
| Cemento & Costruzione | Lame del miscelatore, scivoli di alimentazione, fodere per trasportatori |
| Metallurgia | Rivestimenti del forno, cade, tramogge |
| Attrezzatura pesante | Benne per escavatori, corpi di autocarri con cassone ribaltabile |
