S7
Update：2018/7/21 17:57:58 View：3772
- Type： S7
- Description：
S7
Introduction
Chemical Composition
It is recommended for both hot and cold shock applications such as rivet sets, chisels, punches, moil points, hot headers and gripper dies. S7 is also suited for short-run dies used in coldforming, blanking, and bending. Other uses include: engraving dies, machined cavities for plasticmolding dies, die-casting dies, shear blades, and master hobs.
| C | Si | Mn | Cr | P | S | Mo | V |
| 0.45-0.55 | 0.20-1.00 | 0.20-0.90 | 3.00-3.50 | ≤0.03 | ≤0.03 | 1.30-1.80 | ≤0.35 |
Available size
| Round steel bar 60-800mm | |||||||||
| Flat steel bar 25-400mm*200-800mm |
Surface condition
| Black surface/ Grinded/ Machined |
Hardness
| Annealed HBS235 max |
Characteristics
|
Tool
Steel S7 is a shock steel with exceptional impact properties -
unnotched Charpy over 200 ft-lb at 400F temper. Since it hardens in air,
it is safe and stable in heat treatment. But perhaps the most
remarkable characteristic of S7 is its versatility. S7 has an unusual combination of properties, making it suitable for an extremely wide range of tool and die work - where shock-resistance, medium hot-work properties, or ease of machining and heat-treatment are most important. |
Applications
Steel S7 Flat Bar is used widely for medium-run cold work tools and dies, for plastic molding dies, for shear blades, for medium hot work dies, for master hobs, and for component parts of many products.It is recommended for both hot and cold shock applications such as rivet sets, chisels, punches, moil points, hot headers and gripper dies. S7 is also suited for short-run dies used in coldforming, blanking, and bending. Other uses include: engraving dies, machined cavities for plasticmolding dies, die-casting dies, shear blades, and master hobs.
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