Hướng dẫn nội dung carbon thép
Hướng dẫn nội dung carbon thép
Steel Carbon Content Guide
Reference guide for carbon steel grades — carbon percentage, uses, hardenability, and weldability.
| Grade | C % | Carbon Scale | Type | Common Uses | Weldability |
|---|---|---|---|---|---|
| 1018 | 0.18% | Low Carbon | Fixture clips, brackets, general purpose, easily formed parts | Excellent | |
| 1020 | 0.20% | Low Carbon | Structural parts, shafts, gears (carburized), machine parts | Excellent | |
| 1045 | 0.45% | Medium Carbon | Axles, bolts, connecting rods, hydraulic shafts, blades | Good (preheat recommended) | |
| 1050 | 0.50% | Medium Carbon | Springs, gears, agricultural tools, hand tools | Fair (preheat required) | |
| 1095 | 0.95% | High Carbon | Knives, springs, cutting tools, scrapers, chisels | Poor (requires careful pre/post heat) | |
| 4140 | 0.40% | Alloy Steel | Heavy-duty shafts, gears, studs, tool holders, hydraulic fittings | Fair (preheat to 300-500°F required) | |
| 4150 | 0.50% | Alloy Steel | High-strength shafts, gears, crankshafts, connecting rods | Fair (preheat to 400-600°F required) | |
| 5160 | 0.60% | Alloy Steel | Leaf springs, knives, swords, scraper blades, chisels | Fair (preheat required) | |
| O1 | 0.90% | Tool Steel (Oil) | Cutting tools, dies, gauges, punches, bushings | Not recommended | |
| A2 | 1.00% | Tool Steel (Air) | Blanking dies, forming dies, punches, trim dies, shear blades | Not recommended | |
| D2 | 1.50% | Tool Steel (Air) | Cold forming rolls, stamping dies, slitters, shear blades | Not recommended | |
| S7 | 0.50% | Tool Steel (Air) | Chisels, punches, shear blades, rivet sets, gripper dies | Difficult (pre/post heat essential) | |
| W1 | 1.00% | Tool Steel (Water) | Files, punches, taps, reamers, blacksmith chisels | Not recommended | |
| M2 | 0.85% | Tool Steel (HSS) | Drill bits, end mills, taps, gear cutters, saw blades | Not recommended |
Carbon Scale Legend
How to Use This Guide
- Use the search box to filter by grade number or application keyword.
- Filter by steel type using the dropdown (Low Carbon, Medium Carbon, etc.).
- The visual carbon scale bar shows relative carbon content at a glance.
- Click any row in the table to see expanded details for that grade.
- Use weldability ratings to plan your joining/fabrication approach.
Related Tools
All data is for reference only. Actual compositions vary by manufacturer. All information stays in your browser — nothing is sent to any server.
Hướng dẫn hàm lượng carbon thép miễn phí với kết quả tức thì. Không cần tài khoản, hoạt động trên mọi thiết bị, hoàn toàn riêng tư.
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