Carbon Steel
Carbon Steel Hexagon Head Screw — Fully Threaded — DIN 933 / ISO 4017 / GB/T 5783
Carbon steel is a widely used fastener material because it combines practical strength, broad manufacturing availability and competitive cost. It has no inherent corrosion resistance, so a surface finish such as zinc plating, hot-dip galvanizing or Dacromet is normally specified for anything beyond dry indoor use. Applicable bolt and screw property classes may be specified under ISO 898-1; the material, heat treatment and exact class still need confirmation for the ordered product. General machinery, structural steelwork and high-volume assembly where strength-to-cost matters and the surface is protected by a coating. Magnetic, and the lowest material cost of the common options. The table below is controlled selection guidance, not a claim that every listed grade is supplied. Confirm the exact material, grade and mechanical requirements in the quotation.
Edition to confirm · Material selection| Reference grade / class | Reference standard | Reference tensile (MPa) | Reference yield (MPa) |
|---|---|---|---|
| 4.6 | ISO 898-1 | 400 | 240 |
| 4.8 | ISO 898-1 | 400 | 320 |
| 5.6 | ISO 898-1 | 500 | 300 |
| 5.8 | ISO 898-1 | 500 | 400 |
| 6.8 | ISO 898-1 | 600 | 480 |
| 8.8 | ISO 898-1 | 800 | 640 |
| 9.8 | ISO 898-1 | 900 | 720 |
| 10.9 | ISO 898-1 | 1000 | 900 |
| 12.9 | ISO 898-1 | 1200 | 1080 |
