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Technical Specifications
Product Overview
Metallurgical Characteristics
MetalZenith's NM400 wear resistant steel features a martensitic microstructure achieved through controlled quenching and tempering processes. The steel's exceptional wear resistance is attributed to its high carbon content and carefully balanced alloy composition, including chromium, manganese, and boron additions that enhance hardenability and toughness.
Heat Treatment Process
Our advanced heat treatment process involves austenitizing at 900-950°C followed by controlled water quenching to achieve the desired martensitic structure. Subsequent tempering at 150-250°C optimizes the balance between hardness and toughness. MetalZenith's precision-controlled furnaces ensure uniform heating and cooling rates for consistent mechanical properties throughout the steel plate.
Manufacturing Process
The production begins with high-quality steel making using electric arc furnace technology, followed by secondary refining processes including ladle furnace treatment and vacuum degassing. Hot rolling is performed using our state-of-the-art rolling mills with precise thickness control. The final heat treatment is conducted in computer-controlled furnaces with continuous monitoring of temperature profiles and cooling rates.
Quality Standards & Testing
MetalZenith's NM400 steel complies with international standards including JIS G3128, EN 10028, and ASTM A514. Comprehensive testing includes chemical analysis using optical emission spectrometry, mechanical testing with universal testing machines, hardness verification using Brinell and Vickers methods, impact testing at various temperatures, and ultrasonic testing for internal soundness. Each batch is accompanied by material test certificates (MTC 3.1) providing complete traceability and quality documentation.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.25 |
| Manganese (Mn) | 1.00 - 1.60 |
| Silicon (Si) | ≤ 0.70 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.010 |
| Chromium (Cr) | 0.25 - 1.50 |
| Nickel (Ni) | ≤ 1.50 |
| Molybdenum (Mo) | ≤ 0.60 |
| Boron (B) | 0.0005 - 0.006 |
| Aluminum (Al) | ≥ 0.015 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Brinell Hardness (HBW) | 370 - 430 |
| Tensile Strength (Rm) | 1180 - 1450 MPa |
| Yield Strength (Rp0.2) | ≥ 1000 MPa |
| Elongation (A5) | ≥ 10% |
| Impact Energy (-40°C) | ≥ 20 J |
| Young's Modulus | 210 GPa |
| Fatigue Limit | 450 MPa |
| Poisson's Ratio | 0.27 - 0.30 |
| Reduction of Area | ≥ 35% |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | 1450 - 1520°C |
| Thermal Conductivity (20°C) | 42 W/m·K |
| Thermal Expansion Coefficient (20-100°C) | 12.5×10-6/K |
| Specific Heat Capacity | 460 J/kg·K |
| Electrical Resistivity (20°C) | 0.18 µΩ·m |
| Magnetic Permeability | Ferromagnetic |
| Curie Temperature | 770°C |
| Thermal Diffusivity | 11.6 mm²/s |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Sheets, Coils, Cut-to-size pieces |
| Thickness Range | 4 - 80 mm |
| Width Range | 1000 - 3200 mm |
| Length Range | 2000 - 12000 mm |
| Standards | JIS G3128, EN 10028, ASTM A514 |
| Surface Finish | Hot Rolled, Shot Blasted, Pickled |
| Thickness Tolerance | ± 0.3 mm (t ≤ 20mm), ± 0.5 mm (t > 20mm) |
| Width Tolerance | +0/-5 mm |
| Length Tolerance | +10/-0 mm |
| Edge Condition | Mill Edge, Trimmed Edge, Slit Edge |
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Our Advantages in Processing NM400
Advanced Heat Treatment Technology
MetalZenith employs state-of-the-art quenching and tempering facilities with precise temperature control systems, ensuring uniform hardness distribution and optimal microstructure for superior wear resistance performance in NM400 steel production.
Comprehensive Quality Control System
Our ISO 9001:2015 certified quality management system includes advanced testing equipment for hardness verification, impact testing, chemical analysis, and dimensional inspection, guaranteeing consistent NM400 steel quality with full material traceability.
Custom Processing & Global Supply
MetalZenith offers extensive customization capabilities including precision cutting, machining, and surface treatments for NM400 steel, supported by our global distribution network ensuring timely delivery and comprehensive technical support worldwide.
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