Pelat Keausan
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seri AR Dan Chinese NM series adalah setara secara fungsional dalam hal kekerasan, ketahanan aus, dan aplikasi industri.
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NM series provides a cost-effective alternative for industrial users while maintaining comparable komposisi kimia dan sifat mekanik.
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Selecting the right grade depends on persyaratan aplikasi, ketebalan, and availability, but either series can meet high-abrasion industrial needs.
- Keterangan
AR (Tahan Abrasi) memakai pelat are high-hardness steels designed to withstand extreme wear and impact.
Di Tiongkok, the equivalent series is the NM (Tahan aus) seri, which includes NM400, NM450, NM500, NM550, dan NM600.
While both series serve similar purposes, there are differences in Komposisi Kimia, kekerasan, and mechanical performance.
1. Perbandingan Komposisi Kimia
| Nilai | C (%) | M N (%) | Kr (%) | Mo (%) | Yang lain |
|---|---|---|---|---|---|
| AR400 | 0.2–0,25 | 1.2–1.5 | 0.8–1.2 | 0.2–0.3 | Pada ~0,3 |
| AR450 | 0.25–0.3 | 1.4–1.7 | 0.8–1.3 | 0.2–0.3 | Pada ~0,3 |
| AR500 | 0.3–0.4 | 1.4–1.8 | 0.9–1.5 | 0.2–0.4 | Pada ~0,3 |
| NM400 | 0.18–0.22 | 1.2–1.5 | 0.8–1.1 | 0.15–0,25 | — |
| NM450 | 0.22–0.26 | 1.3–1.6 | 0.8–1.2 | 0.2–0.3 | — |
| NM500 | 0.25–0.32 | 1.4–1.7 | 0.9–1.3 | 0.2–0.35 | — |
Pengamatan:
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Both AR and NM series contain karbon, mangan, dan kromium as key alloying elements.
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AR series may include nickel and slightly higher alloy contents for imported quality control.
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Chinese NM series is produced to GB/T 24186 standar, ensuring comparable hardness and wear resistance.
2. Mechanical Performance Comparison
| Nilai | Kekerasan (HB) | Kekuatan Tarik (MPa) | Kekuatan Hasil (MPa) | Ketangguhan Dampak (J) |
|---|---|---|---|---|
| AR400 | 400 ± 20 | 850–950 | 550–700 | 25–35 |
| AR450 | 445–475 | 900–1000 | 600–750 | 25–40 |
| AR500 | 500 ± 20 | 950–1100 | 650–800 | 20–35 |
| NM400 | 400 ± 20 | 850–950 | 550–700 | 25–35 |
| NM450 | 440–460 | 900–1000 | 600–750 | 25–40 |
| NM500 | 480–520 | 950–1100 | 650–800 | 20–35 |
Poin Penting:
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Hardness and tensile properties are very similar between AR and NM grades.
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Both series are suitable for heavy wear applications.
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Slight differences may exist due to raw material sources and heat treatment processes.
3. Aplikasi
| Industri | Seri AR | Seri NM |
|---|---|---|
| Pertambangan | Lapisan penghancur, liner ember, hopper | Same applications |
| Semen & Konstruksi | Pisau pengaduk, saluran pakan, konveyor | Same applications |
| Metalurgi | Furnace hoppers, air terjun, liner | Same applications |
| Alat Berat | Ember ekskavator, tempat tidur truk sampah | Same applications |
