Metal Grades and Specifications
Overview of Metal Grades & Specifications
Chargentum is a leading supplier of certified metals across the United Kingdom, providing materials for construction, engineering, manufacturing, and industrial applications. The Metal Grades & Specifications presents key grades, mechanical properties, and chemical composition highlights for all metals supplied by Chargentum.
All metals are UK-certified and supplied with full traceability documentation, including Mill Test Certificates and CE marking where applicable. Downloadable Portable Document Format (PDF) datasheets are available for detailed technical information.
Use the Metal Weight Calculator for precise weight calculations across structural steel, alloy steel, stainless steel, aluminium, brass, and copper.
Metal Grades & Key Features
All metals are presented in high-level tables showing grades, mechanical
properties, standards, and key technical features. Each category links to a dedicated subpage with full chemical composition, mechanical and physical data and downloadable datasheets.
Metal Steel Products
(Structural & Engineering Grades) (Collapsible filter)
Structural Steel
Grades: S235 | S275 | S355
Standard: European Standard EN 10025
| Grade | Yield Strength (Megapascals) | Tensile Strength (Megapascals) | Standard |
|---|---|---|---|
| S235 | 235 | 360 – 510 | EN 10025 |
| S275 | 275 | 410 – 560 | EN 10025 |
| S355 | 355 | 470 – 630 | EN 10025 |
Key Technical Features:
- Excellent weldability and structural integrity
- CE marked and mill certified for traceability
- Suitable for load-bearing beams, columns, and general fabrication
Key Technical Features:
- Heat treatable for enhanced strength and toughness
- Excellent machinability for shafts, gears, and precision components
Engineering Steel
Grades: EN8 | EN19 | EN24
Standard: European Standard EN 10083
| Grade | Tensile Strength (Megapascals) | Hardness (Brinell) | Standard |
|---|---|---|---|
| EN8 | 500–700 | 150–200 | EN 10083 |
| EN19 | 850–1000 | 248–302 | EN 10083 |
| EN24 | 850–1000 | 248–302 | EN 10083 |
Key Technical Features:
- Heat treatable for enhanced strength and toughness
- Excellent machinability for shafts, gears, and precision components
Alloy Steel
Grades: 4140 | 4340
Standard: European Standard EN 10083
| Grade | Yield Strength (Megapascals) | Tensile Strength (Megapascals) | Standard |
|---|---|---|---|
| 4140 | 655 | 1020 | EN 10083 |
| 4340 | 740 | 1080 | EN 10083 |
Key Technical Features:
- High wear resistance and hardness retention
- Heat treatment responsive for cutting, forming, and stamping tools
- Maintains toughness under cyclic loading
Tool Steel
Grades: M2 | D2 | O1 | H13
| Grade | Hardness Rockwell C scale after Heat Treatment | Standard |
|---|---|---|
| M2 | 62–66 | EN ISO 4957 |
| D2 | 58–62 | EN ISO 4957 |
| O1 | 57–62 | EN ISO 4957 |
| H13 | 48–52 | EN ISO 4957 |
Key Technical Features:
- High wear resistance and hardness retention
- Heat treatment responsive for cutting, forming, and stamping tools
- Maintains toughness under cyclic loading
Alloy Steel
Grades: 304 | 316
Standard: European Standard EN 10088
| Grade | Yield Strength (Megapascals) | Tensile Strength (Megapascals) | Standard |
|---|---|---|---|
| 304 | 215 | 505 | EN 10088 |
| 316 | 205 | 515 | EN 10088 |
Key Technical Features:
- Sustainable, low-carbon steel
- Equivalent structural performance to standard grades
- UK-compliant sourcing and certification
Green Steel
Grades: S275 | S355
Standard: European Standard EN 10025
| Feature | Detail |
|---|---|
| Reduced Carbon Emissions | Yes |
| Recycled Content | High |
| EN Compliance | EN 10025 |
Key Technical Features:
- Sustainable, low-carbon steel
- Equivalent structural performance to standard grades
- UK-compliant sourcing and certification
Steel Forms
Seamless Tubes
Grades: Carbon Steel | Alloy Steel | Stainless Steel
Standard: European Standard EN 10210 | EN 10219
| Property | Typical Range |
|---|---|
| Yield Strength (Megapascals) | 235–355 |
| Tensile Strength (Megapascals) | 360–630 |
| Manufacturing | Seamless |
Key Technical Features:
- Structural and decorative applications
- Available in multiple metals
- Manufactured to strict tolerances
Key Technical Features:
- Excellent electrical and thermal conductivity
- Highly ductile and formable
Material Comparison Overview
| Material Category | Typical Strength | Corrosion Resistance | Weight | Machinability | Typical Applications | Notes / Key Features |
|---|---|---|---|---|---|---|
| Structural Steel | High | Moderate | Heavy | Moderate | Beams, columns, construction | CE marked, weldable |
| Engineering Steel | High | Moderate | Heavy | Good | Shafts, gears | Heat treatable, precise |
| Alloy Steel | Very High | Moderate | Heavy | Moderate | Mechanical parts | Chromium/molybdenum alloyed |
| Tool Steel | Very High | Moderate | Heavy | Moderate | Tools & dies | Wear resistant |
| Stainless Steel | Moderate | Excellent | Heavy | Moderate | Food, chemical, marine | Corrosion resistant, hygienic |
| Green Steel | High | Moderate | Heavy | Moderate | Sustainable construction | Low-carbon, recycled content |
| Seamless Tubes | High | Moderate | Heavy | Moderate | Structural, hydraulic | Uniform wall thickness |
| Perforated Sheet | Moderate | Good | Medium | Good | Decorative & structural | Multiple patterns & metals |
| Aluminium | Moderate | Good | Lightweight | Good | Frames, automotive | Lightweight, corrosion resistant |
| Copper | Moderate | Excellent | Heavy | Moderate | Electrical, plumbing | High conductivity |
| Brass | Moderate | Good | Medium | Excellent | Valves, fittings | Free machining, corrosion resistant |
Material Comparison Overview
| Category | Relevant Standards | Compliance / Certification | Notes / Key Features |
|---|---|---|---|
| Structural Steel | EN 10025, British Standard EN 1993 | CE Marked, Mill Test Certificate | Structural load-bearing, weldable |
| Engineering Steel | EN 10083, British Standard EN ISO 683 | Mill Test Certificate | Heat treatable, mechanical components |
| Alloy Steel | EN 10083, ASTM A29 | Mill Test Certificate | High fatigue & toughness |
| Tool Steel | EN ISO 4957, ASTM A681 | Mill Test Certificate | Wear resistant, heat treatment responsive |
| Stainless Steel | EN 10088, British Standard EN ISO 3506 | Mill Test Certificate, CE Marked | Corrosion resistant, hygienic |
| Green Steel | EN 10025, ISO 14001 | Mill Test Certificate, Sustainability Certification | Low-carbon, recycled content |
| Seamless Tubes | EN 10210, EN 10219, ASTM A519 | Mill Test Certificate, CE Marked | Structural, mechanical, hydraulic |
| Perforated Sheet | EN 10143, EN 10142 | Mill Test Certificate | Structural & decorative, multiple metals |
| Aluminium | EN 755, British Standard EN 485 | Mill Test Certificate | Lightweight, corrosion resistant |
| Copper | EN 1652, British Standard EN 1172 | Mill Test Certificate | High electrical & thermal conductivity |
| Brass | EN 12164, EN 12165 | Mill Test Certificate | Free machining, corrosion resistant |
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