38H2YU (38HU)
instruments friction parts, parts of auxiliary units of machines and devices
instruments friction parts, parts of auxiliary units of machines and devices
| Standard | Fe, % | Si, % | Mn, % | Cr, % | Al, % | P, % | C, % | S, % |
|---|---|---|---|---|---|---|---|---|
| Standard | Fe, % | Si, % | Mn, % | Cr, % | Al, % | P, % | C, % | S, % |
| GOST 4543-71 | 96–97.25 | 0.2–0.4 | 0.2–0.5 | 1.5–1.8 | 0.5–0.8 | < 0.035 | 0.35–0.43 | < 0.035 |
| Rolling | Standard | Size, mm | Tension | Classifiers | \sigma _{U}, MPa | \sigma_{P}, MPa | \epsilon_L, % | \psi, % | KCU\cdot 10^{3}, \frac{J}{m^2} | Treatment |
|---|---|---|---|---|---|---|---|---|---|---|
| Rolling | Standard | Size, mm | Tension | Classifiers | \sigma _{U}, MPa | \sigma_{P}, MPa | \epsilon_L, % | \psi, % | KCU\cdot 10^{3}, \frac{J}{m^2} | Treatment |
| Rod | GOST 4543-71 | 30 | 880 | 735 | 10 | 45 | 780 | Tempering 930 ° C, the water, leave 630 ° C, the water |
| Standard | Description |
|---|---|
| Standard | Description |
| GOST 4543-71 |
| Parameter | Units of measurement | Description |
|---|---|---|
| Parameter | Units of measurement | Description |
| \sigma _{U} | MPa | Ultimate tensile strength |
| \sigma_{P} | MPa | Proportionality limit |
| \epsilon_L | % | Elongation at break (longitudinal) |
| \psi | % | Reduction in cross section on fracture |
| KCU\cdot 10^{3} | \frac{J}{m^2} | Impact toughness |
| Parameter | Units of measurement | Description |
|---|---|---|
| Parameter | Units of measurement | Description |
| no limits | Welding is performed without heating and without subsequent heat treatment | |
| Boundedly welded | Welding is possible with heating up to 100–120 °C and subsequent heat treatment | |
| Difficult to weld | For obtaining quality welded joints, additional operations are required: heating up to 200–300 °C for welding, heat treatment after welding — annealing | |
| Not applicable for welded structures |
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