Italy · UNI
C 55
UNI EN 10277-2 — Bright steel products - Technical delivery conditions - Part 2 : steels for general engineering purposes
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| bars +C, > 10 <= 16 mm | ≥520 | 730–1080 | ≥6 | |||
| bars +C, > 16 <= 40 mm | ≥440 | 690–1050 | ≥7 | |||
| bars +C, > 40 <= 63 mm | ≥390 | 650–1030 | ≥8 | |||
| bars +C, >= 5 <= 10 mm | ≥590 | 770–1100 | ≥5 | |||
| bars +SH, > 16 <= 100 mm | 490–630 | HB 181–269 HBW |
Fatigue
| Item | Detail |
|---|---|
| Product | Semi Finished products; Thickness: <= 16 mm; +QT |
| Experiment | Reversed bending; T: 20°C |
| Specimen |
| Property | Value |
|---|---|
| Yield strength (MPa) | 550.0 |
| Tensile strength (MPa) | 800.0 950.0 |
| Elongation (%) | 12.0 |
| Reduction of area (%) | 30.0 |
| No. | Cycles |
|---|---|
| 1 | 1E7 |
Heat treatment
| Type | 1 |
|---|---|
| Heat-treatment curve | Hardness-Tempering |