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Technical Specifications
Product Overview
Metallurgical Characteristics
NM600 wear resistant steel features a martensitic microstructure achieved through controlled quenching and tempering processes. The fine-grained structure provides exceptional hardness uniformity and superior wear resistance. The optimized alloy composition with controlled carbon, chromium, and boron content ensures excellent hardenability throughout the material cross-section.
Heat Treatment Process
MetalZenith employs advanced heat treatment technology with austenitizing temperatures of 900-950°C followed by controlled water quenching. The subsequent tempering process at 180-220°C optimizes the balance between hardness and toughness. Our computer-controlled furnaces ensure precise temperature uniformity and consistent metallurgical properties.
Manufacturing Process
Production begins with electric arc furnace melting using premium scrap and alloy additions. Secondary refining through ladle furnace and vacuum degassing ensures ultra-low sulfur and phosphorus content. Continuous casting produces high-quality slabs which undergo controlled rolling in our state-of-the-art hot strip mill. The final quenching and tempering operations are performed using advanced accelerated cooling technology.
Quality Standards & Testing
All NM600 steel production follows ISO 9001:2015 quality management systems. Comprehensive testing includes chemical analysis by optical emission spectroscopy, mechanical property verification through tensile and impact testing, hardness mapping using automated Brinell testing, and ultrasonic inspection for internal soundness. Mill test certificates provide complete traceability and compliance documentation.
Welding & Fabrication Guidelines
NM600 steel requires preheating to 150-200°C for welding operations. Low hydrogen electrodes (E7018 or equivalent) are recommended with interpass temperatures maintained below 250°C. Post-weld stress relief may be required for thick sections or complex geometries. MetalZenith provides detailed welding procedures and technical support for optimal fabrication results.
🧪 Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.47 |
| Silicon (Si) | ≤ 0.70 |
| Manganese (Mn) | ≤ 1.60 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.010 |
| Chromium (Cr) | 0.50-1.20 |
| Nickel (Ni) | ≤ 1.50 |
| Molybdenum (Mo) | ≤ 0.60 |
| Boron (B) | 0.0005-0.0060 |
| Aluminum (Al) | ≥ 0.015 |
| Titanium (Ti) | ≤ 0.15 |
| Vanadium (V) | ≤ 0.20 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Brinell Hardness (HBW) | 570-640 |
| Tensile Strength (Rm) | 1850-2150 MPa |
| Yield Strength (Rp0.2) | ≥ 1350 MPa |
| Elongation (A5) | ≥ 7% |
| Impact Energy (KV) at -40°C | ≥ 15 J |
| Impact Energy (KV) at -20°C | ≥ 20 J |
| Young's Modulus (E) | 210 GPa |
| Poisson's Ratio | 0.27-0.30 |
| Fatigue Limit (10&sup7; cycles) | 650 MPa |
| Fracture Toughness (KIC) | 45-55 MPa·m¹⁄² |
🔬 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 (20°C) | 11.6×10-6 m²/s |
| Emissivity (oxidized surface) | 0.85-0.95 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Sheets, Cut-to-size pieces |
| Thickness Range | 4-80 mm |
| Width Range | 1000-3200 mm |
| Length Range | 2000-12000 mm |
| Standards Compliance | EN 10204-3.1, ASTM A514, JIS G3128 |
| Surface Finish | Hot rolled, Shot blasted, Pickled |
| Edge Condition | Mill edge, Sheared, Flame cut, Plasma cut |
| Thickness Tolerance | ±0.3 mm (t≤20mm), ±0.5 mm (t>20mm) |
| Width Tolerance | ±5 mm |
| Length Tolerance | ±10 mm |
| Flatness | ≤5 mm/m |
| Delivery Condition | Quenched and Tempered (Q+T) |
Let Us Create Success for Your Project
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Our Advantages in Processing NM600
Advanced Quenching & Tempering Technology
MetalZenith employs cutting-edge controlled cooling systems and precision heat treatment processes to achieve optimal hardness uniformity and microstructure refinement in NM600 steel, ensuring superior wear resistance and mechanical properties.
Comprehensive Quality Control System
Our integrated quality management system includes real-time chemical composition monitoring, automated hardness testing, ultrasonic inspection, and dimensional verification to guarantee consistent NM600 steel quality meeting international standards.
Custom Processing & Global Supply Chain
MetalZenith offers extensive customization capabilities including precision cutting, forming, welding preparation, and surface treatments for NM600 steel, supported by our worldwide distribution network and technical support services.
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