Baotou Steel Union (Tianjin) Iron and Steel Co.,

Baotou Steel Union (Tianjin) Iron and Steel Co.,

Chemical composition of NM400 wear-resistant steel plate

2025 08/20

NM400 is a high-strength wear-resistant steel plate commonly used in mining, construction, and other heavy industries due to its excellent abrasion resistance and impact toughness. The chemical composition of NM400 typically adheres to standards such as GB/T 24186 (China) or similar international equivalents (like DIN EN or JIS).

Typical Chemical Composition (Weight %)

Element Content (%)
Carbon (C) ≤ 0.25
Silicon (Si) ≤ 0.70
Manganese (Mn) ≤ 1.60
Phosphorus (P) ≤ 0.025
Sulfur (S) ≤ 0.015
Chromium (Cr) ≤ 1.20
Molybdenum (Mo) ≤ 0.50
Boron (B) ≤ 0.005
Others (Ni, Cu, etc.) Trace

Key Features

  • High Hardness (370-430 HBW): Achieved through quenching and tempering.
  • Good Weldability & Machinability: Controlled carbon and alloy content improve workability.
  • Wear Resistance: Enhanced by alloying elements like Cr, Mo, and B.
Steel Plate

Equivalent Grades

  • International: Hardox 400 (Sweden), JFE EH400 (Japan), DILLIDUR 400 (Germany).
  • Chinese Standard: GB/T 24186-2009 (similar to NM400).

For precise specifications, always refer to the manufacturer's datasheet or relevant standards (e.g., GB/T 24186, EN, ASTM). Let me know if you need mechanical properties or processing details!